ccna discovery4.0 final 3rd module

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Exam Viewer - DRSEnt Final - CCNA Discovery: Introducing Routing and Switching in the Enterprise (Version4.0)

31

Refer to the exhibit. Assuming that all three routers are configured with the EIGRP routing protocol and sharing information, whatinformation can be gathered from the show command output?

Router B has EIGRP adjacencies with both router A and C.

Router B has a fully converged topology table.Router B has not formed an adjacency with router A.Router B has not formed an adjacency with router C.

Scoring Rule For: correctness of response

2 points for Option 40 points for any other option

Max Value = 2

This item references content from the following areas:

CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.3 Verifying EIGRP Operation32 Which three IP addresses are valid host addresses in the 10.200.0.0/20 network? (Choose three.)

10.200.11.6910.200.16.110.200.0.255

10.201.0.5510.200.15.24010.200.30.29


Option 1, Option 3, and Option 5 are correct.

of 13Cisco Networking Academy

5/9/2009mhtml:file://C:\Documents and Settings\mac\Desktop\cisco\disc\Cisco Networking Academ...

1 point for each correct option.0 points if more options are selected than required.

Max Value = 3



4.3.3 Calculating Route Summarization33

Refer to the exhibit. A network administrator noticed that the VLAN configuration changes at SW2 did not propagate to SW3. On thebasis of the partial output of the show vtp status command, what is the possible cause of the problem?

VTP V2 mode is disabled.SW3 is configured as transparent mode.The number of existing VLANs does not match.The configuration revision number does not match.



Max Value = 2



3.5.2 Configuring VTP34 What are two ways VLAN memberships can be created in an enterprise network? (Choose two.)

manually configuring the switch ports to be part of a VLANallowing the user to choose a specific VLAN through a GUI menu

configuring the switch to allow VLAN membership based on NetBIOS associationimplementing an access list that specifies which devices are placed into specific VLANs.associating MAC addresses to specific VLANs in a VLAN management policy server databasemanually configuring the host devices to be part of a VLAN


Option 1 and Option 5 are correct.1 point for each correct option.0 points if more options are selected than required.

Max Value = 2





3.3.1 Virtual LAN

35 Which two statements are correct about a single area OSPF network? (Choose two.)The DR and BDR reduce the number of updates that are sent on a broadcast network.The BDR is responsible for distributing changes to all other OSPF routers.

Routers use hello packets to establish and maintain neighbor adjacencies.All OSPF routers receive updates on multicast address 224.0.0.6.There must always be an area 1.



Max Value = 2



6.1.3 OSPF Neighbors and Adjacencies36 What are two characteristics of an extended ACL? (Choose two.)

IP is used to specify TCP traffic only.IP is used to specify TCP and UDP traffic only.IP is used to specify all TCP/IP protocols including TCP, UDP, ICMP and routing protocols.Traffic can be filtered on source address only.

Traffic can be filtered on source and destination address only.Traffic can be filtered on source and destination address, protocol, and specific port number.



Max Value = 2



8.4.1 Configuring ACLs for Application and Port Filtering37

Refer to the exhibit. OSPF is enabled and the network has completely converged. Which two routers will be designated as DROTHERrouters? (Choose two.)

R1R2

R3R4





Max Value = 2



6.1.3 OSPF Neighbors and Adjacencies38 The headquarters of a corporation uses static routes to connect to three branch offices. What are two advantages of using static routes

for the WAN connections? (Choose two.)Static routes are more secure.Static routes converge faster.

Static routes have higher administrative distances than dynamic routing protocols.The metrics of a static route need adjusting only if the bandwidth of the WAN connection changes.They are more stable and less susceptible to network changes in the interior gateway protocol.



Max Value = 2



5.1.3 Static and Dynamic Routing39

Refer to the exhibit. A network administrator wishes to deny Internet access to all R2 LAN hosts, while allowing these hosts to reach allother devices on the company networks. Where should the ACL shown in the exhibit be placed to meet these requirements?

R2: Fa0/0 inboundR1: S0/1/0 outbound

R1: S0/0/1 inboundR2: S0/0/1 outboundR2: Fa0/0 outbound



Max Value = 2





8.3.1 Placing Standard and Extended ACLs

40

Refer to the exhibit. Internet access is crucial for the company network shown. Internet access is provided by two ISPs. ISP1 is theprimary provider and ISP2 is the backup provider. The network administrator configures BorderR as the border router so that in normaloperations, all Internet traffic goes through ISP1. However, if the link to ISP1 fails, then BorderR will automatically forward Internet trafficto ISP2. The administrator configures two default routes:

BorderR(config)# ip route 0.0.0.0 0.0.0.0 192.168.100.1 200BorderR(config)# ip route 0.0.0.0 0.0.0.0 172.16.1.1

However, when the administrator issued the show ip route command to verify the configuration, only the second default route is in therouting table. Why is the first default route not showing?

The first configuration command overwrites the second command.The first default route will be installed into the routing table if there is traffic with an IP address that is destined for the 192.168.100.0network.This is expected because the link to ISP1 is active. If the link to ISP1 goes down, then the first default route will be installed into therouting table.The first default route cannot be installed into the routing table unless the administrator manually disables the second default routewith the no ip route 0.0.0.0 0.0.0.0 172.16.1.1 command.



Max Value = 2



5.1.4 Configuring Static Routes41 Assuming VLSM is not being used, what impact will adding the command ip route 172.16.64.0 255.255.240.0 serial0/0 have on a

router that is already operational in a network?All packets with a destination address between 172.16.64.1 and 172.16.80.254 will be forwarded out serial0/0.All packets with a destination address between 172.16.64.1 and 172.16.255.254 will be forwarded out serial0/0.

All packets with a destination address between 172.16.64.1 and 172.16.79.254 will be forwarded out serial0/0.All packets with a destination address between 172.16.0.1 and 172.16.64.254 will be forwarded out serial0/0.



Max Value = 2



5.1.4 Configuring Static Routes



42 Which two criteria are used by STP to select a root bridge? (Choose two.)memory sizebridge prioritynumber of portsswitch locationswitching speed

base MAC address



Max Value = 2



3.1.2 Multilayer Switching43 Which two statements describe how the information contained in a BPDU is used by a switch? (Choose two.)

to set the duplex mode of a redundant link

to activate looped paths throughout the networkto determine the root bridgeto prevent loops by sharing routing tables between connected switchesto determine which ports are placed in forwarding mode



Max Value = 2



3.1.2 Multilayer Switching44 Which two statements are true about the native VLAN on a switch? (Choose two.)

It requires a special VLAN ID tag.It is unable to be changed to a different VLAN.

Untagged traffic slows the switching process down.The native VLAN defaults to VLAN 1 on Cisco Catalyst switches.Untagged frames that are received on a trunk become members of this VLAN.



Max Value = 2



3.4.2 Extending VLANs across Switches45 Which two statements are true regarding a PPP connection between two Cisco routers? (Choose two.)

LCP tests the quality of the link.LCP manages compression on the link.Only a single NCP is allowed between the two routers.NCP terminates the link when data exchange is complete.



With CHAP authentication, the routers exchange plain text passwords.



Max Value = 2



7.2.2 HDLC and PPP46

Refer to the exhibit. What three facts represent the result of DR and BDR elections in this OSPF network? (Choose three.)RTC will be the DR of 10.5.0.0/30.RTD will be the BDR of 10.5.0.0/30.RTD will be the DR of 10.4.0.0/28.

RTB will be the BDR of 10.7.0.0/28.RTB will be the DR of 10.7.0.0/28.RTA will be the BDR of 10.4.0.0/28.


Option 3, Option 5, and Option 6 are correct.1 point for each correct option.0 points if more options are selected than required.

Max Value = 3



6.1.3 OSPF Neighbors and Adjacencies47



Refer to the exhibit. A company has recently installed a new switch (S2) into their network. After several minutes, the networkadministrator notices that the new VLAN information is not being propagated to the new switch. Given the show vtp status commandoutput, what is the possible problem that prevents the information from being received by the new switch?

VTP version mismatch

VTP domain name mismatchVTP revision number mismatchtime synchronization problems



Max Value = 2



9.2.3 Troubleshooting VTP48 If a modem is being used to connect to an ISP, which WAN connection type is being used?

leased linecell switchedcircuit switched

packet switched



Max Value = 2



7.1.4 Packet and Circuit Switching49



Refer to the exhibit. Which IP addressing scheme would be correct for the network?H1-172.18.0.10/16H2-172.18.0.11/16H3-172.18.0.12/16H1-172.18.0.10/16H2-172.19.0.10/16H3-172.18.0.11/16H1-172.18.0.10/16H2-172.18.0.11/16H3-172.19.0.11/16H1-172.18.0.10/16H2-172.19.0.11/16H3-172.19.0.11/16



Max Value = 2



3.3.2 Configuring a Virtual LAN50 Which two statements are true about RSTP? (Choose two.)

RSTP can fall back to STP to provide support for legacy equipment.RSTP and STP have the same number of port states.Like PortFast and UplinkFast, RSTP is a proprietary protocol.

RSTP takes up to 50 seconds to converge.RSTP ports, that are not discarding, immediately transition to the forwarding state.



Max Value = 2



3.2.5 Rapid Spanning Tree Protocol (RSTP)51



Refer to the exhibit. R1 is connected to the Internet through its serial 0/0/0 interface. Hosts on the 192.168.100.0/24 LAN on R1 cannotcommunicate with hosts on the Internet. What two NAT configuration issues might explain this failure? (Choose two.)

The ip nat pool command has not been applied correctly.The inside interface has not been defined on R1.

The access list does not include the group of IP addresses that are supported by the inside network.The ip address that is assigned to the serial 0/0/0 interface is incorrect.The outside interface has not been defined on R1.



Max Value = 2



4.4.3 Static and Dynamic NAT52 Which two statements are true about RIPv1 and RIPv2? (Choose two.)

Both versions broadcast routing updates.Both versions send the subnet mask as part of the update.By default, both versions will receive RIPv1 and RIPv2 updates.

Both versions support the features of split horizon and poison reverse.By default, both versions automatically summarize routes.RIPv1 has a higher AD than RIPv2.



Max Value = 2



5.2.2 Routing Information Protocol (RIP) 5.2.4 Problems with RIP

53



What is the term for the value 2172416 that is highlighted in the output of the show ip eigrp topology command?feasible distance of the successorreported distance of the successorfeasible distance of the feasible successorreported distance of the feasible successor



Max Value = 2



5.3.3 EIGRP Terminology and Tables54

Refer to the exhibit. In what sequence (from first to last) does an OSPF router check the parameters listed when selecting the DR?C, B, A, DD, C, B, AA, B, C, D

A, C, B, DB, C, A, D



Max Value = 2



6.2.3 Tuning OSPF Parameters55 Which statement is accurate about the CIR in Frame Relay?

It is important to purchase a CIR that matches the highest bandwidth requirements of the enterprise.The CIR can be no lower than the port speed of the local loop.The CIR defines the contracted maximum rate available from the service provider on the Frame Relay circuit.It is possible to burst over the CIR if bandwidth is available.





Max Value = 2



7.3.2 Frame Relay Functionality56

Refer to the exhibit. What is the purpose of the command: RouterA(config)# access-list 1 permit 192.168.16.0 0.0.0.255?It identifies traffic on all inside interfaces to be translated and given access to the ISP router.It identifies traffic from the fa0/1 interface to be translated and given access to the ISP router.

It allows traffic from the ISP to reach all of the inside interfaces.It identifies traffic from the fa0/0 interface to be translated and given access to the ISP router.It allows traffic from the ISP router to the fa0/1 interface.



Max Value = 2



4.4.3 Static and Dynamic NAT57 What will be the two wildcard masks required in an extended access list statement that blocks traffic to host 192.168.5.45 from the

172.16.240.0/27 network? (Choose two.)0.0.0.0255.255.240.0255.255.255.255

0.0.31.255255.255.255.2400.0.0.31





Max Value = 2



8.2.1 ACL Wildcard Mask Purpose and Structure

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