ccna final 3

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    1

    Which value determines if a switch becomes the central point of reference in the spanning tree

    topology?lowest bridge ID

    highest revision number

    lowest numeric IP addresshighest numeric MAC address

    2

    Refer to the exhibit. What is the purpose of the configuration commands that are shown?to activate port Fa0/10to make the port a member of VLAN 30

    to activate port security on port Fa0/10

    to add VLAN 30 to the trunk that is connected to port Fa0/10

    3Refer to the exhibit. What would happen if the network administrator moved the network cable of

    Host A from interface Fa0/1 to Fa0/switch SW1?

    Host A remains a member of VLAN 10, because the router is routing traffic between VLANs.Host A is no longer a member of VLAN 10, because port Fa0/3 has been manually assigned to

    VLAN 30.

    Host A remains a member of VLAN 10, because the switch provides dynamic VLAN assignment for

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    the port.

    Host A maintains connectivity to all members of VLAN 10, because it is connected to the same

    physical network.Host A is no longer a member of VLAN 10, but because port Fa0/3 was unused, it is now a member

    of VLAN 1.

    4

    Which device or devices should have theSpanning Tree Protocol enabled to prevent host traffic

    from creating a broadcast storm?

    Core_S1Access_S2 and Access_S3

    Core_S1, Access_S2, and Access_S3

    Core_S1, Access_S2, Access_S3, and R15

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    Refer to the exhibit. The hosts connected to switch SW1 are not able to communicate with the hosts

    in the same VLANs connected switch SW2. What should be done to fix the problem?

    Configure VLANs with different VLAN IDs on switch SW2.Reconfigure the trunk port on switch SW2 with static trunk configuration.

    Introduce a Layer 3 device or a switch with Layer 3 capability in the topology.

    Apply IP addresses that are in the same subnet to the interfaces used to connect SW1 and SW2.6

    Refer to the exhibit. The Layer 2 switching design that is shown has been implemented in a campus

    environment that is using SpanningTree Protocol. All inter-switch links that are shown are trunks. Whenever an inter-switch link fails,

    the network takes nearly a minute completely converge. How can the convergence time be reduced?

    Increase the capacity of the distribution and core trunk links to 10 Gb/s.

    Add a trunk link that directly connects D1and D2.Use Layer 3 switching on the core switch.

    Implement Rapid Spanning Tree Protocol.7 What will be the effect of the command S1# copy system:running-configtftp://172.16.2.155/tokyo-config?

    The IOS will be copied to the TFTP server.

    The configuration file named tokyo-config will overwrite the startup configuration file on S1.The running configuration file on S1 will be saved via TFTP to a file named tokyo-config.

    The contents of NVRAM on S1 will become the startup configuration file on the tokyo switch.

    8

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    Refer to the exhibit. Hosts A and B, connected to hub HB1, attempt to transmit a frame at the sametime but a collision occurs. Which

    hosts will receive the collision jamming signal?

    only hosts A and Bonly hosts A, B, and C

    only hosts A, B, C, and D

    only hosts A, B, C, and E

    12What are three benefits of employing a hierarchical network design? (Choose three.)Hierarchically designed networks can more easily be expanded to suit future needs.

    Hierarchical design models enhance existing bandwidth through the use of link aggregation.

    The hierarchical model allows for specialized functionality at each layer, simplifying device

    management.Use of a hierarchical design allows replacement of redundant devices with high-

    capacity network equipment.A hierarchical design uses firewalls instead of complicated port-based and distribution layer security

    policies.

    The hierarchical model allows the use of high-performance switches at all design layers, thusallowing for a fully-meshed topology.

    13 A network administrator implements inter-VLAN routing by configuring subinterfaces on a

    router. What is one important fact that must considered?

    The physical interface must have an IP address configured.The subinterface numbers must match the VLAN ID number.

    The no shutdown command must be issued on each subinterface.

    The IP address of each router subinterface must be used as the default gateway for hosts on thecorresponding VLAN.

    14

    Which type of frame contains information that is used in the election of the spanning tree rootbridge?

    BID

    LSA

    LSUBPDU

    15

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    Refer to the exhibit. Each switch is shown with its MAC address. Which switch will be elected as

    the spanning-tree root bridge if theswitches are configured with their default priority values?

    switch A

    switch Bswitch C

    switch D

    switch E

    switch FClose Window

    Assessment System

    1. Assessment Selection 2. Assessment Settings 3. Take AssessmentTake Assessment ESwitching Final Exam CCNA Exploration: LAN Switching and

    Wireless (Version 4.0)

    Time Remaining:16

    Refer to the exhibit. What will happen when frames with a source address other than 0019.d2e4.d9f7

    enters interface Fa0/24?Fa0/24 will become error-disabled.

    The incoming frames will be dropped.

    The Fa0/24 port LED will be turned off.

    The security violation count will be incremented.17

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    Refer to the exhibit. The network administrator has just added VLAN 50 to Switch1 and Switch2.

    Hosts A, B, C, and D are correctly

    configured with IP addresses in the subnet range for VLAN 50. Host A can communicate with hostB, but cannot communicate with C or host D. What is the cause of this problem?

    There is a native VLAN mismatch.

    The Fa0/11 interface of Switch1 is not configured as a trunk.The link between Switch1 and Switch2 is up but not trunked.

    VLAN 50 is not allowed on the trunk link between Switch1 and Switch2.

    18

    Refer to the exhibit. A network administrator enters the displayed commands to configure VLAN 30.

    What is the result of running these

    commands?VLAN 30 will be added to S1, S2, and S3, but not to S4.

    VLAN 30 will be pruned from the VLAN database of S3.VLAN 30 will be added to the VLAN database of S3 but will not be propagated to S4, S2 or S1.

    VLAN 30 will not be added to the VLAN database of S3 and an error message will be displayed.

    19

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    Refer to the exhibit. R1 is configured for traditional inter-VLAN routing. R1 can ping computer 3

    but cannot ping computer 1. What is possible cause for this failure?S1 port Fa0/11 is in the wrong VLAN.

    R1 does not have an active routing protocol.

    The IP address of computer 1 is in the wrong logical network.

    Router interface Fa0/0 has the wrong trunk encapsulation type configured.20

    Refer to the exhibit. How does SW1 manage traffic coming from Host A?

    SW1 drops the traffic because it is untagged.SW1 leaves the traffic untagged and forwards it over the trunk.

    SW1 tags the traffic with the lowest VLAN ID value and forwards it over the trunk link.

    SW1 encapsulates the traffic with 802.1Q encapsulation and forwards it over the trunk link.

    21

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    Refer to the exhibit. What will allow a host on VLAN 40 on switch X to communicate with a host inVLAN 40 on switch Y?

    QoS

    routingtrunking

    VPN

    22 When implementing a router-on-a-stick, what must be configured on the router to ensureconnectivity between different VLANs?subinterfaces

    routing protocol

    switched virtual circuitsdynamic trunking protocol

    23

    Refer to the exhibit. Users complain that they do not have connectivity to the web server that isconnected to SW1. What should be to remedy the problem?

    Allow all VLANs on the trunk link.Configure VLAN 100 as the native VLAN for SW1.

    Configure the trunk port in trunk mode on SW1.Attach the web server to a router and configure inter-VLAN routing.

    24 Which method establishes an administrative connection for configuring the Linksys WRT300N

    wireless access point?Associate with the access point and then open a HyperTerminal session with the access point.

    Physically connect to the access point and then reboot the computer to launch the configuration

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    software.From a computer in the same IP subnet as the access point, enter the default IP address of the

    access point in a web browser.

    Modify the TCP/IP properties of the computer connected to the access point so that it exists on the

    same network, and then reboot

    your computer to establish a connection.25

    Company policy requires disabling the command history buffer on network devices. An

    administrator enters terminal no history sizethe command prompt on a Cisco Catalyst switch and receives no error messages back, but the

    command history buffer is still available.What is the problem?

    The command contained a syntax error.

    The Cisco IOS version does not support disabling the command history buffer.The command history can only be disabled on a router, not a switch.

    The size parameter reset the default buffer size but did not disable access to the buffer.

    26

    Refer to the exhibit. What does FORWARDING mean in the command output shown?

    The switch is sending and receiving data frames.The switch is receiving BPDUs, but not sending

    data frames.

    The switch is participating in an election process by forwarding the BPDUs it receives.The switch is receiving BPDUs and populating the MAC address table, but not sending data.

    27

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    Refer to the exhibit. Which switch will be elected as the root bridge of the spanning tree topology?

    Cat-A

    Cat-BCat-C

    Cat-D

    28

    Refer to the exhibit. A new host needs to be connected to VLAN 1. Which IP address should be

    assigned to this new host?

    192.168.1.11 /28192.168.1.22 /28192.168.1.33 /28

    192.168.1.44 /28192.168.1.55 /28

    29

    Refer to the exhibit. All trunk links are operational and all VLANs are allowed on all trunk links. AnARP request is sent by computer Which device or devices will receive this message?

    only computer 4computer 3 and RTR-Acomputer 4 and RTR-Acomputer 1, computer 2, computer 4, and RTR-A

    computer 1, computer 2, computer 3, computer 4, and RTR-A

    all of the computers and the router30

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    Refer to the exhibit. The switches in the exhibit have VTP pruning enabled. What will be pruned in

    the VTP advertisements from switchST-C to switch ST-1?

    VLAN 30

    VLAN 20 and VLAN 30VLAN 1, VLAN 20, and VLAN 30

    VLAN 2 through VLAN 29, and VLAN 31 through VLAN 1000

    Time Remaining:

    31

    Refer to the exhibit. An administrator documented the output of a CAM table from an Ethernetswitch as shown. What action will the

    switch take when it receives the frame shown at the bottom of the exhibit?

    discard the frameforward the frame out port 2

    forward the frame out port 3

    forward the frame out all portsforward the frame out all ports except port 3

    add station 00-00-3D-1F-11-05 to port 2 in the forwarding table32

    What are two requirements for configuring inter-VLAN routing using the router-on-a-stick model?(Choose two.)

    Each subinterface should be configured with its own IP address, subnet mask, and unique

    VLAN assignment.

    The physical interface of the router must be connected to a trunk link on the adjacent

    switch.The number of physical interfaces on the router should match the number of VLANs.

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    Different static VLANs should be assigned to different interfaces of the router.

    The router should be configured as the VTP server.

    33

    Refer to the exhibit. The switch VTY lines have been properly configured, but PC1 is unable to

    remotely manage the switch. How can

    this problem be resolved?Configure the Fa0/1 interface of the switch in trunk mode.Configure a default gateway on the switch.Configure the native VLAN on the switch.

    Configure the Fa0/1 interface of the switch to allow all VLANs.34

    Refer to the exhibit. After entering the commands in the exhibit, the administrator receives a

    password required, but none set messagewhen attempting to connect to S1. What is the problem?

    The enable secret password was not set.

    S1 does not have login configured on the vty lines.S1 does not have a password configured for the vty lines.The crypto key is not properly

    configured to generate passwords.

    The VLAN1 interface has not be enabled with the no shutdown command.

    35

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    Refer to the exhibit. After the listed commands are entered into router R1 and switch S1, the

    administrator enters the show interfacefa0/1 trunk and gets the results shown. What is the likely problem?The trunk is established, but no VLANs have been configured to use it.

    The router is missing the dynamic trunking protocol statements necessary to form a trunk.The trunk has not been established because the router does not support dynamic trunking

    protocol.The router, the switch, or both must be configured with the dynamic desirable option for

    dynamic trunking protocol to establish trunk.

    36

    Which parameter is used to uniquely identify one wireless network from another?SSIDOFDM

    WEP

    DSSS37

    Refer to the exhibit. Switch SW2 has been newly purchased and added to the network. What

    configuration should be applied to SW2 that it participates in the same VTP domain as switch SW1,receives VLAN information from SW1, and synchronizes VLAN information?

    Disable VTP pruning on SW2.

    Configure SW2 in VTP transparent mode.Configure SW2 with the VTP domain password.

    Configure SW2 as a VTP server with a higher revision number.

    38

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    Refer to the exhibit. In what two ways will the router handle VLAN traffic that is received on the

    trunk? (Choose two.)Traffic to VLAN 1 received by the router interface Fa0/0 will be dropped by the

    router.Because interface Fa0/0 requires an IP address, the router will not be able to route between

    the VLANs.Packets that are received from network 192.168.20.0 /24 will be handled by subinterface

    Fa0/0.20.The router will use subinterface MAC addresses to identify the VLAN traffic that is

    received on the physical interface.

    The router will continue to process traffic from the attached VLANs even if the physical interfacegoes down.

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    39In which mode is a VTP switch operating if it does not allow for the creation of local VLANs but it

    does accept VLAN updates from other

    switches in the same domain?

    clientroot

    servertransparent

    40

    Which configuration changes will increment the configuration revision number on the VTP server?

    configuring trunk links on the VTP serverconfiguring or changing the VTP password

    configuring or changing the VTP domain name

    configuring or changing the VTP version number

    configuring or deleting a VLAN or creating a VLAN name41

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    Refer to the exhibit. Switches S2 and S3 are properly connected using an ethernet cable. A network

    administrator has configured both

    switches with VTP, but S3 is unable to propagate VLANs to S2. What could be the reason for this?

    The VTP configuration revision is different on both switches.The VTP domains are different on both switches.

    VTP pruning is disabled.

    VTP v2 is disabled.42

    Refer to the exhibit. What is true of the configuration of switch S1?Only VLAN 99 will be allowed to use the trunk links.

    Switch ports Fa0/1 and Fa0/3 are configured with a standard trunking protocol.Switch ports Fa0/1 and Fa0/3 should be configured as access ports to allow data from multiple

    VLANs to access switch S1.

    The switch negotiated trunk links for interfaces Fa0/1 and Fa0/3 because all connected interfaces

    have been configured with theswitchport mode dynamic auto command.

    43

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    What is an efficient and cost effective way to minimize the frequency and effects of broadcast

    storms on an Ethernet LAN?

    Connect each PC directly to a router port.Use access control lists to filter broadcasts from the network.

    Divide the computers into separate VLANs on the existing switches.

    Divide the computers into separate workgroups using different physical switches.44

    Refer to the exhibit. The configuration steps that are listed in the exhibit have been entered in switch

    S1 via the console. Subsequent

    attempts to telnet to the switch are not successful. What is causing the problem?The switch must be configured with SSH version 1.The transport input command must specify Telnet access.

    The RSA keys must be returned to zero before SSH will permit Telnet access.The ip domain-name command must also be entered in line configuration mode for the vty lines.

    45 Why is it important that the network administrator consider the spanning-tree network diameter

    when choosing the root bridge?The network diameter limitation is 9.

    BPDUs may be discarded because of expiring timers.

    The cabling distance between the switches is 100 meters.The network diameter must be set to the number of meters of the cable between the root bridge and

    its farthest connected switch.Showing 3 of 4

    Close Window

    Assessment System

    1. Assessment Selection 2. Assessment Settings 3. Take Assessment

    Take Assessment ESwitching Final Exam CCNA Exploration: LAN Switching andWireless (Version 4.0)

    Time Remaining:

    46

    Refer to the exhibit. The commands are entered into switch SW1 as shown, and an 802.1q trunk is

    successfully established. How doesswitch SW1 handle the untagged traffic that is destined for the trunk?

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    SW1 will drop all untagged traffic.SW1 will send all untagged traffic to VLAN 1.

    SW1 will send all untagged traffic to VLAN 25.SW1 will send untagged traffic to all VLANs that are configured on the trunk.

    47

    Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the sametime. How do the hosts respond the network? (Choose two.)

    After the end of the jam signal, a backoff algorithm is invoked.

    Hosts 1 and 4 are operating full duplex so no collision will exist.The hub will block the port connected to Host 4 to prevent a collision.

    Hosts 1 and 4 are assigned shorter backoff values to provide them priority to access the media.If a host has data to transmit after the backoff period of that host, the host checks to determine

    if the line is idle before transmitting.

    48

    Refer to the exhibit. Hosts PC_A and PC_B send traffic simultaneously, and the frames from the

    transmitting stations collide. What last device to receive the collision?hub HB1switch SW1

    router R1

    switch SW2router R2

    switch SW4

    49

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    What provides an authentication mechanism for 802.11-based wireless networks?

    DSSS

    OFDMSSID

    WPA

    50 What are two benefits of the IEEE 802.11n standard over the IEEE 802.11G? (Choose two.)requires less equipment

    provides improved range

    permits increased data rates

    has a single-input and a single-output

    needs no hardware upgrade for compatibility

    51

    Refer to the exhibit. Users A and B are reporting intermittent connectivity problems. Pre-installationsurveys showed strong signal

    strength from the AP locations to the client locations. Outside electrical interference has been

    eliminated. What will fix the problem?

    Relocate the APs closer to each other.Increase the distance between the clients.Change the channel on AP-B to 6 or 11.

    Place AP-A and AP-B on the same wireless channel.

    52 Why is MAC address filtering considered a poor choice in securing a WLAN?Available bandwidth is reduced.MAC addresses are easily spoofed.

    APs are more susceptible to DoS attacks.

    The payload encryption is easily broken.

    Showing 4 of 4Close Window

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    1. Refer to the exhibit. The network administrator needs to setup Switch1 for remote access from

    HostA. Theshow ip interface brief is issued on Router1 and the show interfaces trunk command is

    issued on theSwitch1 to verify the current status. The administrator applies the additionalconfiguration shown in theexhibit to Switch1. However, the telnet from HostA fails. What additional

    commands need to be appliedto the switch?

    Switch(config)# interface vlan 1Switch(config-if)# ip address 10.1.1.250 255.255.255.0

    Switch(config-if)# no shutdown

    Switch(config-if)# ip default-gateway 10.1.10.254 Switch(config)# interface vlan 1

    Switch(config-if)# ip address 10.1.50.250 255.255.255.0

    Switch(config-if)# no shutdown

    Switch(config-if)# ip default-gateway 10.1.50.254 Switch(config)# interface vlan 10

    Switch(config-if)# ip address 10.1.10.250 255.255.255.0

    Switch(config-if)# no shutdown

    Switch(config-if)# ip default-gateway 10.1.10.254 Switch(config)# interface vlan 10

    Switch(config-if)# ip address 10.1.1.250 255.255.255.0Switch(config-if)# no shutdown

    Switch(config-if)# ip default-gateway 10.1.10.254

    Switch(config)# interface vlan 50

    Switch(config-if)# ip address 10.1.10.250 255.255.255.0Switch(config-if)# no shutdown

    Switch(config-if)# ip default-gateway 10.1.10.254

    2. Refer to the exhibit. On the basis of the configuration shown, how will an Ethernet frame on portGigabitEthernet0/1 be modified?

    802.1Q encapsulation prepends a 4-byte tag field in front of the original Ethernet frame and

    recomputes the frame check sequence (FCS) on the modified frame. 802.1Q encapsulation inserts a 4-byte tag field into the original Ethernet frame between the source

    address and type/length fields and recomputes the frame check sequence (FCS) on the modified

    frame. 802.1Q encapsulation prepends an 802.1p field in front of the original Ethernet frame and

    recomputes the frame check sequence (FCS) on the modified frame. 802.1Q encapsulation inserts

    an 802.1p field into the original Ethernet frame between the source address and type/length fields

    and recomputes the frame check sequence (FCS) on the modified frame.3. What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default

    value?

    All VLANs will be allowed across the trunk. Only VLAN 1 will be allowed across the trunk.

    Only the native VLAN will be allowed across the trunk.

    The switches will negotiate via VTP which VLANs to allow across the trunk.4. Which parameter is used to uniquely identify one wireless network from another?

    SSID

    OFDM

    WEP

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    DSSS

    5. Refer to the exhibit. What is the consequence if SW1 port F0/1 is configured as an edge port?

    SW1 port F0/1 transitions to the learning state. SW1 port F0/1 can generate a temporary loop.

    SW1 port F0/1 becomes a non-designated port.

    SW1 port F0/2 no longer passes BPDUs to SW4.6. Refer to the exhibit. What will allow a host on VLAN 40 on switch X to communicate with a

    host in VLAN 40 on switch Y?

    QoS routing

    trunking

    VPN

    7. Refer to the exhibit. Spanning-tree port priorities are 128 for all interfaces. The networkadministrator enters the spanning-tree vlan 1 root primary command on S4. Which two port results

    are correct? (Choose two.)

    S1 Gi0/1 becomes a root port.

    S2 Gi0/2 becomes a non-designated port. S3 Gi0/1 becomes a non-designated port.

    S4 Gi0/1 becomes a root port. S4 Gi0/2 becomes a designated port.

    8. Refer to the exhibit. Which two facts can be confirmed by this output? (Choose two.)

    This switch shows no configuration revision errors.

    This switch has established two-way communication with the neighboring devices. This switch is configured to advertise its VLAN configuration to other VTP-enabled switches in

    the same VTP domain.

    This switch will drop all VTP advertisements that come from the switches that are configured inthe same VTP domain.

    This switch will cause no disruption in the VTP domain operations if the rest of the switches in the

    same VTP domain have a higher configuration revision number.9. Refer to the exhibit. R1 is configured for traditional inter-VLAN routing. R1 can ping computer 3

    but cannot ping computer 1. What is a possible cause for this failure?

    S1 port Fa0/11 is in the wrong VLAN. R1 does not have an active routing protocol.

    The IP address of computer 1 is in the wrong logical network.

    Router interface Fa0/0 has the wrong trunk encapsulation type configured.

    10. Refer to the exhibit. Both switches are interconnected via a trunk link. Host A and host B are onthe default VLAN but are not able to exchange traffic. What should be done to fix the problem?

    Allow all VLANs on the trunk link.

    Remove the native VLAN from the trunk. Include a router or switch with Layer 3 capabilities.

    Configure the same native VLAN on both ends of the trunk.

    11. Refer to the exhibit. The hosts connected to switch SW1 are not able to communicate with thehosts in the same VLANs connected to switch SW2. What should be done to fix the problem?

    Configure VLANs with different VLAN IDs on switch SW2.

    Reconfigure the trunk port on switch SW2 with static trunk configuration.

    Introduce a Layer 3 device or a switch with Layer 3 capability in the topology.

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    Apply IP addresses that are in the same subnet to the interfaces used to connect SW1 and SW2.

    12. What happens when the crypto key zeroize rsa command is entered on a switch configured with

    the transport input ssh command on the vty lines? A new RSA key pair is created.

    The switch defaults to allowing Telnet connections only.

    The switch is no longer able to make SSH connections as an SSH client. The switch allows remote connections only after a new RSA key pair is generated.

    13. Refer to the exhibit. An Ethernet switch has developed the CAM table shown. What action will

    the switch take when it receives the frame shown at the bottom of the exhibit? forward the frame out all interfaces except Interface3

    add station 00-00-3D-1F-11-05 to Interface2 in the forwarding table

    forward the frame out Interface3

    discard the frame forward the frame out all interfaces

    forward the frame out Interface2

    14. Which two statements describe Spanning Tree Protocol? (Choose two.)

    It eliminates Layer 2 loops in network topologies. It eliminates the need for redundant physical paths in network topologies.

    It can only be used in networks in which Layer 2 switching is in use. It can only be used in networks where both routers and switches are used together.

    It can only be used in networks where routers are installed.

    15. Refer to the exhibit. A new host needs to be connected to VLAN 1. Which IP addresses should

    be assigned to this new host? 192.168.1.11 /28

    192.168.1.22 /28

    192.168.1.33 /28 192.168.1.44 /28

    192.168.1.55 /28

    16. Refer to the exhibit. How does SW1 manage traffic coming from Host A? SW1 drops the traffic because it is untagged.

    SW1 leaves the traffic untagged and forwards it over the trunk.

    SW1 tags the traffic with the lowest VLAN ID value and forwards it over the trunk link. SW1 encapsulates the traffic with 802.1Q encapsulation and forwards it over the trunk link.

    17. Refer to the exhibit. The switches are configured for VTP as shown. Which two statements

    correctly describe the operation of these switches? (Choose two.)

    A new VLAN can be added to Switch1 and that information will be added only to Switch2. A new VLAN can be added to Switch1 and that information will be added to Switch2 and Switch4.

    An existing VLAN can be deleted from Switch4 and that VLAN will be deleted from Switch1 and

    Switch2. An existing VLAN can be deleted from Switch2 and that VLAN will be deleted from Switch1 and

    Switch4.

    A new VLAN can be added to Switch4 and that information will be added to Switch1, Switch2,and Switch3.

    A new VLAN can be added to Switch3 and that information will be added to Switch1, Switch2,

    and Switch4.

    18. Refer to the exhibit. Computer A sends a broadcast message. Which devices will see the

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    broadcast?

    computer B

    computer B and Router1 computer C and Router1

    computer B, computer D, computer E and Router1

    computer B, computer C, computer D, computer E and Router1 computer A, computer B, computer C, computer D, computer E and Router1

    19. Refer to the exhibit. The network administrator enters the configuration shown to allow both

    SSH and Telnet connections to the switch. The Telnet connections fail. What is the most likely causeof this problem?

    The SSH version number is wrong.

    SSH has been configured on the wrong line.

    Telnet and SSH cannot be configured simultaneously. The transport input command is configured incorrectly.

    20. Refer to the exhibit. Which switch will be elected as the root bridge of the spanning tree

    topology?

    Cat-A Cat-B

    Cat-C Cat-D

    21. Refer to the exhibit. The switches in the exhibit have VTP pruning enabled. Which VLANs will

    be pruned from switch SW3?

    VLAN 10 and VLAN 20 VLAN 1, VLAN 10, and VLAN 20

    VLAN 1, VLAN 1002 through 1005

    VLAN 1, VLAN 10, VLAN 20, VLAN 1002 through 100522. Refer to the exhibit. What does STATIC indicate in the output that is shown?

    The switch will not allow any other device to connect to port Fa0/15.

    Traffic destined for MAC address 0000.c123.5432 will be forwarded to Fa0/15. This entry will be removed and refreshed every 300 seconds to keep it in the table.

    The switch learned this MAC address from the source address in a frame received on Fa0/15.

    When processing a frame, the switch does not have to perform a lookup to determine the finaldestination port.

    23. Which three statements are regarding router-on-a-stick inter-VLAN routing? (Choose three.)

    requires the use of subinterfaces on the router

    requires an access link between the router and Layer 2 switch more cost-efficient and scalable than using multiple physical interfaces

    requires each subinterface to be configured with the no shutdown command

    can impact performance if many VLANs compete for bandwidth on a single router interface makes troubleshooting the inter-VLAN routing configuration much less complex than when using

    multiple physical interfaces

    24. Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.35 and adestination address of 192.168.1.85. What will the router do with this packet?

    The router will forward the packet out interface FastEthernet 0/1.1.

    The router will forward the packet out interface FastEthernet 0/1.2.

    The router will forward the packet out interface FastEthernet 0/1.3.

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    The router will forward the packet out interface FastEthernet 0/1.2 and interface FastEthernet 0/1.3.

    The router will ignore the packet because the source and destination are on the same broadcast

    domain. The router will drop the packet since no network that includes the source address is attached to the

    router.

    25. Refer to the exhibit. The network administrator needs to remove the east-hosts VLAN and usethe switch port from that VLAN in one of the existing VLANs. What two commands should be used

    when completely removing VLAN 2 from S1-Central while leaving the switch and all its interfaces

    operational? (Choose two.) S1-Central# reload

    S1-Central# erase flash:

    S1-Central(config)# no vlan 2

    S1-Central# delete flash:vlan.dat S1-Central(config-if)# switchport access vlan 3

    26. Refer to the exhibit. What does FORWARDING mean in the command output shown?

    The switch is sending and receiving data frames.

    The switch is receiving BPDUs, but not sending data frames. The switch is participating in an election process by forwarding the BPDUs it receives.

    The switch is receiving BPDUs and populating the MAC address table, but not sending data.27. Refer to the exhibit. Switch SW2 has been newly purchased and added to the network. What

    configuration should be applied to SW2 so that it participates in the same VTP domain as switch

    SW1, receives VLAN information from SW1, and synchronizes VLAN information?

    Disable VTP pruning on SW2. Configure SW2 in VTP transparent mode.

    Configure SW2 with the VTP domain password.

    Configure SW2 as a VTP server with a higher revision number.28. What are three benefits of a hierarchical network model? (Choose three.)

    reduced contention for bandwidth

    reduced size of the physical layout increased fault tolerance of the network

    elimination of the need for wiring closets

    elimination of the need for layer three functionality simplification of management and troubleshooting

    29. Refer to the exhibit. Which three options correctly identify information that could be associated

    with this output?(Choose three.)

    Interface FastEthernet3/0/0 is subinterfaced. A non-proprietary trunking protocol is in use.

    The configuration is appropriate for a router-on-a-stick network design.

    A shutdown command has been applied to interface FastEthernet3/0/0. Interface FastEthernet3/0/0.3 is mapped to the default management VLAN.

    An IP address should be applied to FastEthernet3/0/0 for correct data routing.

    30. Refer to the exhibit. Switch SW2 was tested in a lab environment and then inserted into aproduction network without reloading its configuration. After the trunk link between SW1 and SW2

    was brought up, all users lost connectivity to the network. What could be the source of the problem?

    All the VLANs were pruned from the trunk port between SW1 and SW2.

    SW1 and SW2 cannot be both set as VTP servers in the same VTP domain.

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    VTP configuration revision number of SW2 was higher than the configuration revision number of

    SW1.

    The additional VLANs from SW2 created more VLANs than the VLAN database of SW1 couldcontain.

    31. Refer to the exhibit. A network administrator needs to implement inter-VLAN routing on a

    hierarchical network. On which devices should the inter-VLAN routing be configured? AS1 and AS2

    DS1 and DS2

    Gateway and CS1 Gateway, CS1, DS1, and DS2

    32. Which three statements are correct concerning the default configuration of a new switch?

    (Choose three.)

    Spanning Tree Protocol is disabled. Enable password is configured as cisco.

    All switch ports are assigned to VLAN1.

    The flash directory contains the IOS image.

    VLAN1 is configured with a management IP address. All interfaces are set to auto-negotiation of speed and duplex.

    33. Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at thesame time. How do the hosts respond on the network? (Choose two.)

    After the end of the jam signal, a backoff algorithm is invoked.

    Hosts 1 and 4 are operating full duplex so no collision will exist.

    The hub will block the port connected to Host 4 to prevent a collision. Hosts 1 and 4 are assigned shorter backoff values to provide them priority to access the media.

    If a host has data to transmit after the backoff period of that host, the host checks to determine if

    the line is idle before transmitting.34. Refer to the exhibit. After the listed commands are entered into router R1 and switch S1, the

    administrator enters the show interface fa0/1 trunk and gets the results shown. What is the likely

    problem? The trunk is established, but no VLANs have been configured to use it.

    The trunk has not been established because the router does not support dynamic trunking protocol.

    The router, the switch, or both must be configured with the dynamic desirable option for dynamictrunking protocol to establish a trunk.

    The router is missing the dynamic trunking protocol statements necessary to form a trunk.

    35. Refer to the exhibit. Which two statements are about the operation of the interfaces? (Choose

    two.) Incoming traffic with VLAN ID 0 is processed by interface fa0/0.

    Incoming traffic that has a VLAN ID of 2 is processed by subinterface fa0/0.2.

    Both subinterfaces remain up with line protocol up, even if fa0/0 line protocol is down. Subinterfaces use unique MAC addresses by adding the 802.1Q VLAN ID to the hardware address.

    Traffic inbound on this router is processed by different subinterfaces, depending on the VLAN

    from which the traffic originated.36. What three tasks should be performed before moving a Catalyst switch to another VTP

    management domain? (Choose three.)

    Select the correct VTP mode and version.

    Configure the switch with the name of the new management domain.

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    Download the VTP database from the VTP server in the new domain.

    Configure the VTP server in the new domain to recognize the BID of the switch.

    Reset the VTP counters to allow the switch to synchronize with the other switches in the newdomain.

    Verify that the switch has a lower configuration revision number than the other switches in the new

    domain.37. Refer to the exhibit. Hosts A and B, connected to hub HB1, attempt to transmit a frame at the

    same time but a collision occurs. Which hosts will receive the collision jamming signal?

    only hosts A and B only hosts A, B, and C

    only hosts A, B, C, and D

    only hosts A, B, C, and E

    38. Which statement regarding the service password-encryption command is ? The service password-encryption command is entered at the privileged EXEC mode prompt.

    The service password-encryption command encrypts only passwords for the console and VTY

    ports.

    The service password-encryption command encrypts all previously unencrypted passwords in therunning configuration.

    To see the passwords encrypted by the service password-encryption command, enter the no servicepassword-encryption command.

    39. Refer to the exhibit. Which two statements are regarding what the cost value of 23 represents

    for Switch4? (Choose two.)

    This cost represents the lowest cost path for Switch4 to the root switch. A cost of 23 is the value being advertised out port 16 on the switch upstream (closer) to the root

    switch.

    Switch4 adds the cost of a Fast Ethernet link to 23 to determine its total cost to reach the rootswitch.

    Switch4 is connected via a Fast Ethernet link to an upstream switch that in turn is directly

    connected to the root switch via a Gigabit Ethernet link. The root switch is advertising a cost of 23, which is lower than any other switch in the VLAN0001

    spanning-tree domain.

    40. Refer to the exhibit. What three statements describe why Host1 and Host2 are unable tocommunicate? (Choose three.)

    The switch ports are on different VLANs.

    The switch IP address is on the wrong subnet.

    The hosts are configured on different logical networks. A router is required to forward traffic between Host1 and Host2.

    The VLAN port assignments must be contiguous for each VLAN.

    The host default gateway addresses must be on the same logical network.41. Refer to the exhibit. Each switch is shown with its MAC address. Which switch will be elected

    as the spanning-tree root bridge if the switches are configured with their default priority values?

    switch A switch B

    switch C

    switch D

    switch E

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    switch F

    42. Refer to the exhibit. Hosts PC_A and PC_B send traffic simultaneously, and the frames from the

    transmitting stations collide. What is the last device to receive the collision? hub HB1

    switch SW1

    router R1 switch SW2

    router R2

    switch SW443. Why is it important that the network administrator consider the spanning-tree network diameter

    when choosing the root bridge?

    The network diameter limitation is 9.

    BPDUs may be discarded because of expiring timers. The cabling distance between the switches is 100 meters.

    The network diameter must be set to the number of meters of the cable between the root bridge and

    its farthest connected switch.

    44. Refer to the exhibit. A network administrator has segmented the network into two VLANs andconfigured Router1 for inter-VLAN routing. A test of the network, however, shows that hosts on

    each VLAN can only access local resources and not resources on the other VLAN. What is the mostlikely cause of this problem?

    Switch port Fa0/1 is not trunking.

    Router interface Fa0/0 is possibly down.

    No routing protocol is configured on Router1. One of the router subinterfaces is possibly down.

    45. What is the purpose of issuing the command switchport mode access on a switch interface?

    disable port security make the port operational

    override the default port behavior

    force the port to be a part of a single vlan46. Refer to the exhibit. Which statement is regarding the information shown?

    Only one VLAN is currently configured to use the trunk links.

    The switch negotiated trunk links for interfaces Fa0/1 and Gi0/1. A Cisco proprietary protocol is in use for interfaces Fa0/1 and Gi0/1.

    Interfaces Gi0/1 and Fa0/1 are allowed to carry data from multiple VLANs

    47. Which identifier is used to keep track of frames that are destined for a particular wireless client?

    AID SSID

    BSSID

    ESSID48. Refer to the exhibit. What will happen when frames that contain an unknown source address

    reach interface fa0/24?

    A syslog message will be logged. Fa0/24 will become error-disabled.

    The incoming frames will be dropped.

    The security violation count will be incremented.

    49. In which mode is a VTP switch operating if it has been configured to only forward VTP

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    advertisements?

    client

    root server

    transparent

    50. Which method establishes an administrative connection for configuring the Linksys WRT300Nwireless access point?

    Associate with the access point and then open a HyperTerminal session with the access point.

    Physically connect to the access point and then reboot the computer to launch the configurationsoftware.

    From a computer in the same IP subnet as the access point, enter the default IP address of the

    access point in a web browser.

    Modify the TCP/IP properties of the computer connected to the access point so that it exists on thesame network, and then reboot your computer to establish a connection.

    51. What two methods can be used to remove MAC address table entries from a switch? (Choose

    two.)

    Power cycle the switch to clear all dynamically learned addresses The clear switching-tables command will remove statically configured entries.

    The clear mac-address-table command will remove statically and dynamically configured tableentries.

    The erase flash command will clear all statically configured table entries.

    Statically configured MAC addresses will automatically be removed from the address table 300

    minutes after the last activity on a switch port.52. What are two benefits of the IEEE 802.11n standard over the IEEE 802.11G? (Choose two.)

    requires less equipment

    provides improved range permits increased data rates

    has a single-input and a single-output

    needs no hardware upgrade for compatibility

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