Download - CCNA 3 v5 Scaling Networks - Final Exam Answers

8/18/2019 CCNA 3 v5 Scaling Networks - Final Exam Answers

1/17

CCNA 3 v5 Scaling Networks Final Exam Answers

1. What term is used to describe a hierarchical model in which three layers are not needed?

collapsed core

distribution-access model

three-tier model

dual-core model

2 A DHCPREQUEST message has been sent from the client to the DHCP server. What information is

included in the message?

initial message to locate a DHCP server

confirmation that the IP address has been allocated to the client

denial message to reject the first offer from the DHCP server

formal request for the offered IP address

3 Users on an IEEE 801.11n network are complaining of slow speeds. The network administrator

checks the AP and verifies it is operating properly. What can be done to improve the wireless

performance in the network?

Switch to an 802.11g AP.

Set the AP to mixed mode.

Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.

Change the authentication method on the AP.

4 Where in the Cisco Borderless Architecture is the forwarding rate crucial?

at all layers

at core layer only

at distribution layer only

at access layer only

at distribution and core layers only

5 While analyzing log files, a network administrator notices reoccurring native VLAN mismatches.

What is the effect of these reoccurring errors?

Unexpected traffic on the error-occurring trunk port is being received.?

The control and management traffic on the error-occurring trunk port is being misdirected or dropped.

All traffic on the error-occurring trunk port is being misdirected or dropped.

All traffic on the error-occurring trunk port is being switched correctly regardless of the error.


2/17

8 A network administrator is using the router-on-a-stick method to configure inter-VLAN routing.

Switch port Gi1/1 is used to connect to the router. Which command should be entered to prepare this

port for the task?

Switch(config)# interface gigabitethernet 1/1

Switch(config-if)# switchport mode trunk


Switch(config-if)# switchport access vlan 1


Switch(config-if)# spanning-tree vlan 1


Switch(config-if)# spanning-tree portfast

9 Which attack allows the attacker to see all frames on a broadcast network by causing a switch to

flood all incoming traffic?

802.1q double tagging

STP manipulation

LAN storm

VLAN hopping

MAC table overflow

10 Refer to the exhibit. A Layer 3 switch routes for three VLANs and connects to a router for Internet

connectivity. Which two configurations would be applied to the switch? (Choose two.)

(config)# interface gigabitethernet1/1

(config-if)# switchport mode trunk

(config)# interface fastethernet0/4

(config-if)# switchport mode trunk

(config)# interface gigabitethernet 1/1

(config-if)# no switchport

(config-if)# ip address 192.168.1.2 255.255.255.252

(config)# interface vlan 1

(config-if)# ip address 192.168.1.2 255.255.255.0

(config-if)# no shutdown

(config)# ip routing


3/17

11 Which statement is true regarding states of the IEEE 802.1D Spanning Tree Protocol?

Ports must be blocked before they can be placed in the disabled state.

Ports are manually configured to be in the forwarding state.

It takes 15 seconds for a port to go from blocking to forwarding.Ports listen and learn before going into the forwarding state.

12 Under which two occasions should an administrator disable DTP while managing a local area

network? (Choose two.)

on links that should dynamically attempt trunking

when a neighbor switch uses a DTP mode of dynamic desirable

on links that should not be trunking

when connecting a Cisco switch to a non-Cisco switch

when a neighbor switch uses a DTP mode of dynamic auto

13 When a fixed configuration switch is purchased for use on a new network infrastructure, which

feature would be of most value if the network is characterized as having a large numbers of users but

the users require little bandwidth?

PoE pass-through

PoE

wire speed

port density

14 Using default settings, what is the next step in the switch boot sequence after the IOS loads from

flash?

Load the bootstrap program from ROM.

Locate and load the startup-config file from NVRAM.

Search for a backup IOS in ROM.

Load the running-config file from RAM.

Perform the POST routine.

15 What will be the result of adding the command ip dhcp excluded-address 10.10.4.1 10.10.4.5 to the

configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 10.10.4.1 and 10.10.4.5 will be dropped by the router.

The DHCP server will not issue the addresses ranging from 10.10.4.1 to 10.10.4.5.

Traffic will not be routed from clients with addresses between 10.10.4.1 and 10.10.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 10.10.4.1 and 10.10.4.5.

16 What method of wireless authentication is dependent on a RADIUS authentication server?

WEP

WPA Personal


4/17

WPA2 Enterprise

WPA2 Personal

17 Which two statements are characteristics of routed ports on a multilayer switch? (Choose two.)?

They are not associated with a particular VLAN.

They support subinterfaces, like interfaces on the Cisco IOS routers.

The interface vlan command has to be entered to create a VLAN on routed ports.

They are used for point-to-multipoint links.

In a switched network, they are mostly configured between switches at the core and distribution layers.

18 In which link aggregation mode does an interface initiate EtherChannel negotiation by sending

LACP packets?

desirable

auto

active

on

19 Which command, when issued in the interface configuration mode of a router, enables the

interface to acquire an IPv4 address automatically from an ISP, when that link to the ISP is enabled?

ip address dhcp

ip helper-address

ip dhcp pool

service dhcp

20 What is the purpose of the Spanning Tree Protocol (STP)?

creates smaller broadcast domains

creates smaller collision domains

prevents routing loops on a router

prevents Layer 2 loops

allows Cisco devices to exchange routing table updates

21 Refer to the exhibit. A network administrator is implementing the stateless DHCPv6 operation for

the company. Clients are configuring IPv6 addresses as expected. However, the clients are not

getting the DNS server address and the domain name information configured in the DHCP pool. What

could be the cause of the problem?

The router is configured for SLAAC operation.

The DNS server address is not on the same network as the clients are on.

The GigabitEthernet interface is not activated.

The clients cannot communicate with the DHCPv6 server, evidenced by the number of active clients being 0.


5/17

22 What impact does the use of the mdix auto configuration command have on an Ethernet interface

on a switch?

automatically detects interface speed

automatically detects duplex settingsautomatically detects copper cable type

automatically assigns the first detected MAC address to an interface

23 What are two advantages of EtherChannel? (Choose two.)

Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a

forwarding state.

Load balancing occurs between links configured as different EtherChannels.

Configuring the EtherChannel interface provides consistency in the configuration of the physical links.

Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.EtherChannel uses upgraded physical links to provide increased bandwidth.

24 When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where

should the IP address be assigned?

to the SVI

to the VLAN

to the subinterface

to the interface

25 An employee connects wirelessly to the company network using a cell phone. The employee then

configures the cell phone to act as a wireless access point that will allow new employees to connect

to the company network. Which type of security threat best describes this situation?

denial of service

cracking

spoofing

rogue access point

26 Refer to the exhibit. Devices on VLANs 5 and 6 cannot communicate. What could be the cause for

the lack of inter-VLAN communication?

The GigabitEthernet 0/1 port has not been enabled on the switch.

R1 does not have a default gateway.

Routing has not been enabled on the multilayer switch.

SVIs have not been created.

The GigabitEthernet 0/1 port has not been made a routed port.

27 Which two statements are true about VLAN implementation? (Choose two.)

The network load increases significantly because of added trunking information.

The size of the collision domain is reduced.


6/17

The number of required switches in a network decreases.

VLANs logically group hosts, regardless of physical location.

Devices in one VLAN do not hear the broadcasts from devices in another VLAN.

28 Refer to the exhibit. Which statement shown in the output allows router R1 to respond to stateless

DHCPv6 requests?

ipv6 nd other-config-flag?

ipv6 unicast-routing

prefix-delegation 2001:DB8:8::/48 00030001000E84244E70?

ipv6 dhcp server LAN1?

dns-server 2001:DB8:8::8?

29 Refer to the exhibit. What is the purpose of the configuration commands that are shown?

to make the port a member of VLAN 30

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

to activate port Fa0/10

to activate port security on port Fa0/10

30 Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from this DHCP

server. The output of the debug ip dhcp server command shows “DHCPD: there is no address pool

for 192.168.1.1″. What is the problem?

The 192.168.1.1 address has not been excluded from the DHCP pool.

The default router for the 192Network pool is incorrect.

The 192.168.1.1 address is already configured on Fa0/0.

The pool of addresses for the 192Network pool is incorrect.

31 What is the PoE pass-through feature?

how the switch supplies electrical power to all of the line cards that are connected to it

the capability of powering the switch as well as any devices that are directly connected to the switch

how the power is supplied for a stack of switches

the capability of a wireless AP to supply electrical power to IP phones

32 What are two requirements to be able to configure an EtherChannel between two switches?

(Choose two.)

All the interfaces need to be working in the same duplex mode.

All the interfaces need to work at the same speed.

Different allowed ranges of VLANs must exist on each end.

All interfaces need to be assigned to different VLANs.

The interfaces that are involved need to be contiguous on the switch.


7/17

33 Which three pairs of trunking modes will establish a functional trunk link between two Cisco

switches? (Choose three.)

dynamic auto – dynamic auto

access – dynamic autodynamic desirable – trunk

dynamic desirable – dynamic auto

dynamic desirable – dynamic desirable

access – trunk

34 While attending a conference, participants are using laptops for network connectivity. When a

guest speaker attempts to connect to the network, the laptop fails to display any available wireless

networks. The access point must be operating in which mode?

openmixed

passive

active

35 Refer to the exhibit. Which destination MAC address is used when frames are sent from the

workstation to the default gateway?

MAC address of the forwarding router

MAC address of the virtual router

MAC address of the standby router

MAC addresses of both the forwarding and standby routers

36 What two conditions have to be met in order to form a cluster that includes 5 access points?

(Choose two.)

The APs have to be connected on the same network segment.

At least two controllers are needed to form the cluster.

The APs must use different cluster names.

The APs must all be configured to use different radio modes.

Clustering mode must be enabled on the APs.

37 An administrator needs management access to a switch from a remote offsite location. Which

three configurations are required on the switch to allow the administrator to have remote access

using either SSH or Telnet? (Choose three.)

console line password

VLAN IP address

default gateway

encrypted passwords


8/17

banner message

vty line password

38 When would a network designer be concerned with RUs?

when purchasing a specific number of switches for a network rack

when calculating maximum port speed

when considering port density

when determining the number of available line cards

39 Which impact does adding a Layer 2 switch have on a network?

an increase in the size of the broadcast domain

an increase in the number of network collisions

an increase in the size of the collision domain

an increase in the number of dropped frames

40 An STP instance has failed and frames are flooding the network. What action should be taken by

the network administrator?

A response from the network administrator is not required because the TTL field will eventually stop the

frames from flooding the network.

Broadcast traffic should be investigated and eliminated from the network.

Redundant links should be physically removed until the STP instance is repaired.

Spanning tree should be disabled ?for that STP instance until the problem is located.

41 A network administrator has configured an EtherChannel between two switches that are

connected via four trunk links. If the physical interface for one of the trunk links changes to a down

state, what happens to the EtherChannel?

The EtherChannel will remain functional.

The EtherChannel will transition to a down state.

Spanning Tree Protocol will recalculate the remaining trunk links.

Spanning Tree Protocol will transition the failed physical interface into forwarding mode.

42 Refer to the exhibit. Which two commands or groups of commands are needed to complete the

switch configuration so that SSH can be used to telnet from host A to SW_1? (Choose two.)

SW_1(config)# login ssh

SW_1(config)# password class

SW_1(config)# line vty 0 15 SW_1(config-line)# login

SW_1(config-line)# password cisco

SW_1(config)# password encrypted cisco

SW_1(config)# line vty 0 15

SW_1(config-line)# login local

SW_1(config-line)# transport input ssh


9/17

SW_1(config)# login key rsa

SW_1(config)# password cisco

SW_1(config)# username david password class

43 Refer to the exhibit. A network administrator is verifying the bridge ID and the status of this switch

in the STP election. Which statement is correct based on the command output?

The STP instance on Switch_2 is using the default STP priority and the election is based on Switch_2 MAC

address.

The bridge priority of Switch_2 has been lowered to a predefined value to become the root bridge.

The bridge priority of Switch_2 has been lowered to a predefined value to become the backup root bridge.

The STP instance on Switch_2 is failing due to no ports being blocked and all switches believing they are the

root.

44 When would a network engineer configure an access point with channel bonding?

when security is an issue

when trunking is enabled between the access point and switch

when older wireless NICs are being used

when more throughput is needed

45 What two STP features are incorporated into Rapid PVST+? (Choose two.)

BPDU filter

loop guard

UplinkFast

PortFast

BPDU guard

BackboneFast

46 Which wireless network topology is being configured by a technician who is installing a keyboard,

a mouse, and headphones, each of which uses Bluetooth?

infrastructure mode

hotspot

ad hoc mode

mixed mode

47 Refer to the exhibit. Two VLANs have been configured on the switch and PCs have been assigned.

PCs in the Sales VLAN can ping all PCs in their own VLAN, but cannot ping the PCs in the HR VLAN.

What are two explanations for this problem? (Choose two.)

A router is required for communication between VLANs.

The management VLAN has not been assigned an IP address.

The PCs are in separate broadcast domains.


10/17

All PCs are in one collision domain.

All PCs are in one broadcast domain.

48 Refer to the exhibit. The partial configuration that is shown was used to configure router on a

stick for VLANS 10, 30, and 50. However, testing shows that there are some connectivity problems

between the VLANs. Which configuration error is causing this problem?

The VLAN IP addresses should belong to the same subnet.?

A configuration for the native VLAN is missing.

The wrong VLAN has been configured on subinterface Fa0/0.50.?

There is no IP address configured for the FastEthernet 0/0 interface.

49 Refer to the exhibit. Router RA receives a packet with a source address of 192.168.1.65 and a

destination address of 192.168.1.161. 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 and interface FastEthernet 0/1.3.

The router will broadcast the packet out every sub-interface except for the one that received the packet.


The router will drop the packet.

50 Which two methods can be used to provide secure management access to a Cisco switch?

(Choose two.)

Configure SSH for remote management.

Configure all switch ports to a new VLAN that is not VLAN 1.

Configure the native VLAN to match the default VLAN.

Configure specific ports for management traffic on a specific VLAN.

Configure all unused ports to a “black hole.”

51 Which factor can limit the implementation of a converged network infrastructure?

QoS implementation

point-to-point video traffic

legacy equipment

software-based phones

52 When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in

the forwarding state. In which two port roles could these interfaces function while in the forwarding

state? (Choose two.)

blocked

designated

alternate

disabled

root


11/17

53 An administrator was troubleshooting a router-on-a-stick topology and concluded that the

problem was related to the configuration of VLANs on the router subinterfaces. Which two

commands can the administrator use in the router to identify the problem? (Choose two.)

show ip interface

show vlan

show ip protocols

show running-config

show controllers

54 What are the two methods that are used by a wireless NIC to discover an AP? (Choose two.)

initiating a three-way handshake

delivering a broadcast frame

receiving a broadcast beacon frame

transmitting a probe request

sending an ARP request

55 Refer to the exhibit. An attacker on PC-A sends a frame with two 802.1Q tags on it, one for VLAN

10 and another for VLAN 20. What will happen to this frame?

ALS1 will leave both tags on the frame and send it to ALS2, which will forward it to hosts on VLAN 10.

ALS1 will remove both tags and forward the rest of the frame across the trunk link, where ALS2 will forward

the frame to hosts on VLAN 10.

ALS1 will remove the outer tag and send the rest of the frame across the trunk link, where ALS2 will forward

the frame to hosts on VLAN 20.

It will be dropped by ALS1 because it is invalid.

56 Which switching method results in the lowest latency when forwarding frames?

symmetric

fast forward

fragment free

store and forward

57 A set of switches is being connected in a LAN topology. Which STP bridge priority value will make

it least likely for the switch to be selected as the root?

61440

32768

65535

4096


12/17

58 Which two commands should be implemented to return a Cisco 3560 trunk port to its default

configuration? (Choose two.)

S1(config-if)# no switchport trunk native vlan

S1(config-if)# no switchport trunk allowed vlan S1(config-if)# switchport access vlan 1

S1(config-if)# switchport mode dynamic desirable

S1(config-if)# switchport mode access

Why can PC0 not communicate with Server0 by using the IP address as the target?

The DHCP pool configuration is incorrect on Router1.

The ip helper-address command is missing on Router0.

The dns-server command is missing on Router1.

The ip helper-address command is missing on Router2.

60 Refer to the exhibit. A network administrator is configuring inter-VLAN routing. However, the

communication between VLAN 10 and VLAN 20 fails. Based on the output of the show vlan

command, what is the cause of the problem?

Gi1/1 and Gi1/2 are not configured as trunk mode.

The IP addresses on Gi0/0 and Gi0/1 are switched by mistake.

Gi1/1 and Gi1/2 are not assigned to their respective VLANs.

The IP addresses on Gi0/0 and Gi0/1 are not on the same network.

61 Refer to the exhibit. An administrator is troubleshooting an EtherChannel configuration that is

causing the port channel to drop between switches S1 and S2. Based on the output that is shown,

which action would allow switches S1 and S2 to automatically negotiate an EtherChannel with

PAgP?

On S2, change the channel group number to “1.”

On S2, change the channel group mode to “on.”

On S1, change the channel group mode to “desirable.”

On S1, change the channel group mode to “active.”

62 Which technology is an open protocol standard that allows switches to automatically bundle

physical ports into a single logical link?

Multilink PPP

DTP

PAgP

LACP


13/17

1 Beginning with the Cisco IOS Software Release 15.0, which license is a prerequisite for installingadditional technology pack licenses?UCIPBase*SEC

DATA

2 When a router is powered on, where will the router first search for a valid IOS image to load bydefault?flash memory*RAMROMNVRAM

3 What statement describes a Cisco IOS image with the “universalk9_npe” designation for Cisco ISRG2 routers? It is an IOS version that, at the request of some countries, removes any strong cryptographicfunctionality.*

It is an IOS version that provides only the IPBase feature set.It is an IOS version that offers all of the Cisco IOS Software feature sets.It is an IOS version that can only be used in the United States of America.

4 Which statement describes a difference between the IOS 15.0 extended maintenance release and astandard maintenance release?

A new standard maintenance release will synchronize with the latest extended maintenance release beforethe extended is made available.The extended maintenance release will deliver new IOS features as soon as they are available.They consist of two separate parallel trains.The standard maintenance release enables faster IOS feature delivery than the extendedmaintenance release does.*

5 A network administrator configures a router with the command sequence: R1(config)# boot system tftp://c1900-universalk9-mz.SPA.152-4.M3.bin R1(config)# boot system rom What is the effect of the command sequence? The router will copy the IOS image from the TFTP server and then reboot the system.The router will search and load a valid IOS image in the sequence of flash, TFTP, and ROM.On next reboot, the router will load the IOS image from ROM.The router will load IOS from the TFTP server. If the image fails to load, it will load the IOS imagefrom ROM.*

6 Which command would a network engineer use to find the unique device identifier of a Ciscorouter? show running-configuration

show license udi* license install stored-location-urlshow version

7 Which command is used to configure a one-time acceptance of the EULA for all Cisco IOS softwarepackages and features? license savelicense accept end user agreement* show licenselicense boot module module-name

8 How long is the evaluation license period for Cisco IOS Release 15.0 software packages?30 days15 days


14/17

60 days* 180 days

9 Which IOS 12.4 software package integrates full features, including voice, security, and VPNcapabilities, for all routing protocols?

Service Provider ServicesAdvanced Enterprise Services*

Advanced Security Advanced IP Services

10 A network engineer is upgrading the Cisco IOS image on a 2900 series ISR. What command couldthe engineer use to verify the total amount of flash memory as well as how much flash memory iscurrently available? show versionshow interfacesshow startup-configshow flash0:*

11 Which three software packages are available for Cisco IOS Release 15.0? Security*

Advanced IP ServicesIPVoiceDATA* Enterprise ServicesUnified Communications*

12 Fill in the blank. Do not use abbreviations. The license ” install ” flash0:seck9-C1900-SPE150_K9-FAB12340099.xml command will restore the

specified saved Cisco IOS Release 15 license to a router.

13 A newly hired network engineer wants to use a 2911 router from storage. What command would

the technician use to verify which IOS technology licenses have been activated on the router? show interfacesshow flash0:show versionshow license* show startup-config

14 When a customer purchases a Cisco IOS 15.0 software package, what serves as the receipt forthat customer and is used to obtain the license as well? Product Activation Key* Unique Device IdentifierSoftware Claim CertificateEnd User License Agreement

15 The customer of a networking company requires VPN connectivity for workers who must travelfrequently. To support the VPN server, the customer router must be upgraded to a new Cisco IOSsoftware version with the Advanced IP Services feature set. What should the field engineer do beforecopying the new IOS to the router? Issue the show version and the show flash commands to ensure that the router has enough memoryand file space to support the new IOS image.*

Set the router to load the new IOS image file directly from the TFTP server on the next reboot.Delete the currently installed IOS by using the erase flash: command, and reload the routerIssue the show running-configuration command to determine the features of the currently installed IOSimage file.


15/17

16 What is the major release number in the IOS image name c1900-universalk9-mz.SPA.152-3.T.bin?23521900

15* 17

Place the options in the following order:universalk91mzc1900 – not scored – M44bin15 18


16/17

Place the options in the following order:[+] branches from another train[+] has the latest features[#] possibly is 12.4[#] contains mostly bug fixes [+] Order does not matter within this group. [#] Order does not matter within this group.

19. Refer to the exhibit. Which of the three Cisco IOS images shown will load into RAM? The router selects the second Cisco IOS image because it is the smallest IOS image.-> The router selects an image depending on the boot system command in the configuration.


17/17

23. Which three images are considered premium software packages for Cisco IOS Release 12.4?(Choose three.) Advanced Enterprise Services* Advanced IP Services* Enterprise Services*

Advanced Security

24. A network technician is troubleshooting problems with a router that is running IOS 15. Whichcommand will display the features activated for the licenses that are installed on the router? show flash0:show license* show startup-configshow version

25. What is the purpose of a T train release in Cisco IOS 15?

It provides premium packages and enables additional IOS software feature combinations that address morecomplex network requirements.It specifies advanced IP services features such as advanced security and service provider packages.

It is used for long-term maintenance, enabling customers to qualify, deploy, and remain on the release for anextended period.It provides regular bug fix maintenance rebuilds, plus critical fix support for network-affecting bugs.*

Download - CCNA 3 v5 Scaling Networks - Final Exam Answers

Top Related