ccna 4 final jun 2010

8/8/2019 Ccna 4 Final Jun 2010

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When NAT is in use, what is used to determine the addresses that can be translated on a Cisco router?access control listrouting protocolinbound interfaceARP cache

2 A network administrator is tasked with maintaining two remote locations in the same city. Both locations use the sameservice provider and have the same service plan for DSL service. When comparing download rates, it is noticed that thelocation on the East side of town has a faster download rate than the location on the West side of town. How can thisbe explained?

The West side has a high volume of POTS traffic.The West side of town is downloading larger packets.The service provider is closer to the location on the East side.More clients share a connection to the DSLAM on the West side.

3 A company uses a PVC with a committed information rate (CIR) of 128 kb/s and a committed burst information rate(CBIR) of 64 kb/s. The link is used to periodically send updates at a rate of 144 kb/s. What will happen to the updatetraffic?

The traffic will be sent, but the company will be charged a penalty.The traffic will be sent using the additional CBIR and will be guaranteed delivery.The traffic will be dropped at the CO for exceeding the committed information rate.The traffic will be sent, but the burst traffic will be marked for discard if congestion is encountered.

4

Refer to the exhibit. How is the TCP/IP configuration information specified by the default-routerand dns-server commands made available?

The TCP/IP information is forwarded to a 10.0.1.3 to be supplied to DHCP clients.The TCP/IP information is used by DNS clients to forward all data to the default gateway on R1 of 10.0.1.3.The TCP/IP information is supplied to any DHCP client on the network connected to the FastEthernet 0/0 interfaceof R1.The TCP/IP information is applied to each packet that enters R1 through the FastEthernet 0/0 interface that are


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hosts on the 10.0.1.0 /24 network except packets from addresses 10.0.1.2, 10.0.1.16, and 10.0.1.254.

5

Refer to the exhibit. From the output of the show interfacesand ping commands, at which layer of the OSI model is afault indicated?

applicationtransportnetworkdata linkphysical

6 Which statement accurately describes a characteristic of a security policy?It creates a basis for legal action if necessary.It should not need altering once it is implemented.It provides step-by-step procedures to harden routers and other network devices.It is kept private from users to prevent the possibility of circumvention of security measures.

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Refer to the exhibit. A network technician has been called in to resolve a problem with this network segment. Thesymptoms include a loss of connectivity throughout the network segment, high link utilization, and syslog messagesthat indicate constant MAC address relearning. What is the likely cause of these symptoms?

cable faultfaulty NIC cardIP addressing errorspanning tree problemNAT configuration error

8 A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assignedtwo public IP addresses to this remote office. How can the system administrator configure the router to provide Internetaccess to all ten users at the same time?

Configure DHCP and static NAT.Configure dynamic NAT for ten users.Configure static NAT for all ten users.Configure dynamic NAT with overload.

9 An administrator is unable to receive e-mail. While troubleshooting the problem, the administrator is able to ping thelocal mail server IP address successfully from a remote network and can successfully resolve the mail server name toan IP address via the use of the nslookupcommand. At what OSI layer is the problem most likely to be found?

physical layerdata link layernetwork layerapplication layer

10 Which option represents a best practice for applying ACLs?Named ACLs are less efficient than numbered ACLs.


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Standard ACLs should be applied inside the core layer.ACLs applied to outbound interfaces use fewer router resources.Extended ACLs should be applied closest to the source that is specified by the ACL.

11 Which security solution has the responsibility of monitoring suspicious processes that are running on a host and thatmight indicate infection of Trojan horse applications?

antivirus applicationoperating system patchesintrusion prevention systemCisco Adaptive Security Appliance

12

Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the DC router tothe Orlando router?

DLCI 123DLCI 321

10.10.10.2510.10.10.26MAC address of the Orlando router

13 Which encapsulation protocol when deployed on a Cisco router over a serial interface is only compatible with anotherCisco router?

PPPSLIPHDLCFrame Relay

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Refer to the exhibit. What statement is true about the core router devices?They use multiport internetworking devices to switch traffic such as Frame Relay, ATM, or X.25 over the WAN.They provide internetworking and WAN access interface ports that are used to connect to the service provider

network.They provide termination for the digital signal and ensure connection integrity through error correction and linemonitoring.They support multiple telecommunications interfaces of the highest speed and are able to forward IP packets at fullspeed on all of those interfaces.

15 Which characteristic of VPN technology prevents the contents of data communications from being read byunauthorized parties?

QoSlatencyreliabilityconfidentiality

16

Refer to the exhibit. Company ABC expanded its business and recently opened a new branch office in another country.IPv6 addresses have been used for the company network. The data servers Server1 and Server2 run applications whichrequire end-to-end functionality, with unmodified packets that are forwarded from the source to the destination. Theedge routers R1 and R2 support dual stack configuration. What solution should be deployed at the edge of the companynetwork in order to successfully interconnect both offices?

a new WAN service supporting only IPv6NAT overload to map inside IPv6 addresses to outside IPv4 address


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a manually configured IPv6 tunnel between the edge routers R1 and R2static NAT to map inside IPv6 addresses of the servers to an outside IPv4 address and dynamic NAT for the rest othe inside IPv6 addresses

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Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1 and R3 have not received anyRIP routing updates. What will fix the issue?

Enable RIP authentication on R2.

Issue the ip directed-broadcastcommand on R2.Change the subnet masks to 10.11.12.0/8 and 172.16.40.0/16 on R2.Enable CDP on R2 so that the other routers will receive routing updates.

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Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to ping the default gateway.What is the cause of the problem?

The default gateway is in the wrong subnet.STP has blocked the port that PC1 is connected to.Port Fa0/2 on S2 is assigned to the wrong VLAN.S2 has the wrong IP address assigned to the VLAN30 interface.

19 A network technician analyzes the network and notices late collisions. The collisions occur accompanied by jabber thatoriginates from the server. What is the likely cause of the problem?

faulty switch portweb server CPU overloadfaulty NIC in the web servermisconfiguration of web server services

20

Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request packet that entersinterface S0/0/0, and is destined for an FTP server at IP address 172.16.1.5?

The router matches the incoming packet to the statement that is created by access-list 201 p ermit ip any an ycommand and allows the packet into the router.The router reaches the end of ACL 101 without matching a condition and drops the packet because there is nostatement that was created by access-list 101 permit ip any anycommand.The router matches the incoming packet to the statement that was created by the access-list 101 perm it ip any172.16.1.0 0.0.0.255command, ignores the remaining statements in ACL 101, and allows the packet into therouter.The router matches the incoming packet to the statement that was created by the access-list 201 deny icm p172.16.1.0 0.0.0.255 an ycommand, continues comparing the packet to the remaining statements in ACL 201 toensure that no subsequent statements allow FTP, and then the router drops the packet.


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21 Which three guidelines would help contribute to creating a strong password policy? (Choose three.)Once a good password is created, do not change it.Deliberately misspell words when creating passwords.Create passwords that are at least 8 characters in length.Use combinations of upper case, lower case, and special characters.

Write passwords in locations that can be easily retrieved to avoid being locked out.Use long words found in the dictionary to make passwords that are easy to remember.

22 A company is looking for a WAN solution to connect its headquarters site to four remote sites. What are twoadvantages that dedicated leased lines provide compared to a shared Frame Relay solution? (Choose two.)

reduced jitterreduced costsreduced latency

the ability to burst above guaranteed bandwidththe ability to borrow unused bandwidth from the leased lines of other customers

23 Which two statements are true about creating and applying access lists? (Choose two.)There is an implicit deny at the end of all access lists.One access list per port, per protocol, per direction is permitted.Access list entries should filter in the order from general to specific.The term "inbound" refers to traffic that enters the network from the router interface where the ACL is applied.

Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to thedestination.

24 What is the result when the command permit tcp 10.25.132.0 0.0.0.255 any eq smtpis added to a named access controllist and applied on the inbound interface of a router?

TCP traffic with a destination to the 10.25.132.0/24 is permitted.Only Telnet traffic is permitted to the 10.24.132.0/24 networkTtraffic from 10.25.132.0/24 is permitted to anywhere on using any port.

Traffic using port 25 from the 10.25.132.0/24 is permitted to all destinations.

25 Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?BEDECIRCBIR

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Refer to the exhibit. A network administrator has issued the commands that are shown on Router1 and Router2. A later

review of the routing tables reveals that neither router is learning the LAN network of the neighbor router. What is mostlikely the problem with the RIPng configuration?

The serial interfaces are in different subnets.The RIPng process is not enabled on interfaces.The RIPng processes do not match between Router1 and Router2.The RIPng networkcommand is missing from the IPv6 RIP configuration.

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Which two protocols in combination should be used to establish a link with secure authentication between a Cisco

and a non-Cisco router? (Choose two.)HDLCPPPSLIPPAPCHAP

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Refer to the exhibit. This serial interface is not functioning correctly. Based on the output shown, what is the mostlikely cause?

improper LMI typeinterface resetPPP negotiation failureunplugged cable

29 Where does a service provider assume responsibility from a customer for a WAN connection?local loopDTE cable on routerdemarcation pointdemilitarized zone

30

Refer to the exhibit. What happens if the network administrator issues the commands shown when an ACL calledManagers already exists on the router?

The commands overwrite the existing Managers ACL.The commands are added at the end of the existing Managers ACL.

The network administrator receives an error stating that the ACL already exists.The commands will create a duplicate Managers ACL containing only the new commands being entered.

31 Which statement is true about NCP?Link termination is the responsibility of NCP.Each network protocol has a corresponding NCP.NCP establishes the initial link between PPP devices.NCP tests the link to ensure that the link quality is sufficient.

32 A light manufacturing company wishes to replace its DSL service with a non-line-of-sight broadband wireless solutionthat offers comparable speeds. Which solution should the customer choose?

Wi-FisatelliteWiMAXMetro Ethernet

33 An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. The administrator receives anerror message when trying to enter the IPv4 routes into RIPng. What is the cause of the problem?

When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are over-written in favor of thenewer technology.


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Incorrect IPv4 addresses are entered on the router interfaces.RIPng is incompatible with dual-stack technology.IPv4 is incompatible with RIPng.

34

Refer to the exhibit. A network administrator is configuring Frame Relay on router HQ. It is desired that each FrameRelay PVC between the routers be in a separate subnet. Which two commands on HQ will accomplish this task for theconnection to R1? (Choose two.)

HQ(config)# interface S0/0/0

HQ(config)# interface S0/0/0.1 multipoint HQ(config)# interface S0/0/0.1 point-to-pointHQ(config-subif)# frame-relay interface dlci 1 03 HQ(config-subif)# frame-relay interface dlci 3 01 HQ(config-if)# frame-relay map ip 172.16.1.1 255.255.255.0 301 b roadcast

35 Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?flow controlerror controlauthenticationsynchronous communication

36 When configuring a Frame Relay connection, what is the purpose of Inverse ARP?to assign a DLCI to a remote peerto disable peer requests from determining local Layer 3 addressesto negotiate LMI encapsulations between local and remote Frame Relay peersto create a mapping of DLCI to Layer 3 addresses that belong to remote peers

37 A technician has been asked to run Cisco SDM one-step lockdown on the router of a customer. What will be the resultof this process?


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Traffic is only forwarded from SDM-trusted Cisco routers.Security testing is performed and the results are saved as a text file stored in NVRAM.The router is tested for potential security problems and any necessary changes are made.All traffic entering the router is quarantined and checked for viruses before being forwarded.

38 Which statement is true about wildcard masks?

A wildcard mask must be created by inverting the subnet mask.A wildcard mask performs the same function as a subnet mask.A wildcard mask of 0.0.0.0 means the address should match exactly.A wildcard mask uses a "1" to identify IP address bits that must be checked.

39 Which type of ACL will permit traffic inbound into a private network only if an outbound session has already beenestablished between the source and destination?

extended

reflexivestandardtime-based

40

Refer to the exhibit. Which statement is true about the Frame Relay connection?The Frame Relay connection is in the process of negotiation.A congestion control mechanism is enabled on the Frame Relay connection.The ACTIVE status of the Frame Relay connection indicates that the network is experiencing congestion.Only control FECN and BECN bits are sent over the Frame Relay connection. No data traffic traverses the link.

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Refer to the exhibit. What is the effect of the extended ACL when applied inbound on the S0/0/0 interface on R2?All IP traffic will be permitted during the specified days and time range.Both IP and Telnet traffic will be permitted during the specified days and time range.Only Telnet traffic destined for 172.16.10.0/24 will be permitted during the specified days and time range.Telnet traffic will be permitted only during the specified days and time range. All other network traffic will bepermitted any time.

42

Refer to the exhibit. Router1 and Router2 are directly connected over a point-to-point serial link. Router1 initiates aPPP session with Router2. Which statement is true based on the configuration?

The password is sent in clear text.The routers are unable to authenticate.The username and password are sent encrypted.A hash value of the username and password are sent.

43 An issue of response time has recently arisen on an application server. The new release of a software package has alsobeen installed on the server. The configuration of the network has changed recently. To identify the problem,individuals from both teams responsible for the recent changes begin to investigate the source of the problem. Whichstatement applies to this situation?

Scheduling will be easy if the network and software teams work independently.


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It will be difficult to isolate the problem if two teams are implementing changes independently.Results from changes will be easier to reconcile and document if each team works in isolation.Only results from the software package should be tested as the network is designed to accommodate the proposedsoftware platform.

44 What is a characteristic feature of a worm?

exploits a known vulnerabilityattaches to executable programsmasquerades as a legitmate programlies dormant until triggered by an event, time, or date

45

Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 to the TFTP server. Hereceives the error message that is shown in the exhibit, and cannot ping the TFTP server from R1. What is an actionthat can help to isolate this problem?

Use correct source file name in the command.Verify that the TFTP server software is running.Make sure that there is enough room on the TFTP server for the backup.Check that R1 has a route to the network where the TFTP server resides.

Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP at speeds comparable to DSLand cable?

Wi-FisatelliteWiMAXMetro Ethernet

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Refer to the exhibit. From the output of the show interfacecommands, at which OSI layer is a fault indicated?

applicationtransport

networkdata linkphysical

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Refer to the exhibit. This router is being configured to use SDM, but the SDM interface of the router cannot beaccessed. What is the cause of the problem?

The VTY lines are not configured correctly.The HTTP timeout policy is not configured correctly.The authentication method is not configured correctly.The username and password are not configured correctly.

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Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp servercommand shows "DHCPD: there is no address pool for 192.168.3.17". What is the problem?

The address 192.168.3.17 address is already in use by Fa0/0.The pool of addresses for the 192Network pool is configured incorrectly.

The ip helper-addresscommand should be used on the Fa0/0 interface.The 192.168.3.17 address has not been excluded from the 192Network pool.

50 Which data link layer encapsulation protocol is used by default for serial connections between two Cisco routers?ATMFrame RelayHDLCPPP

SDLC

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Refer to the exhibit. Results of the show vlanand show v tp statuscommands for switches S1 and S2 are displayed inthe exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?

There is a Layer 2 loop.The VTP domain names do not match.Only one switch can be in server mode.S2 has a higher spanning-tree priority for VLAN 11 than S1 does.

52 Which variable is permitted or denied by a standard access control list?protocol typesource IP addresssource MAC addressdestination IP addressdestination MAC address

ccna 4 final jun 2010

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