642-891 Exam
Composite Exam
- Exam Number/Code : 642-891
- Exam Name : Composite Exam
- Questions and Answers : 330 Q&As
- Update Time: 2011-09-21
- Price:
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Cisco CCNP 642-891 exam braindumps questions and answers
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Exam : Cisco 642-891
Title : Composite Exam
1. Which two methods advertise internal networks to external ISPs via BGP? (Choose two.)
A. using aggregate routes
B. disabling synchronization
C. forcing the next-hop address
D. defining routes via the network statement
Answer: AD
2. Why should iBGP sessions be fully meshed within a Transit AS?
A. BGP requires redundant TCP sessions between iBGP peers.
B. A full mesh allows for optimal routing within the Transit AS.
C. Routes learned via iBGP are never propagated to other eBGP peers.
D. Routes learned via iBGP are never propagated to other iBGP peers.
E. Routes learned via eBGP are never propagated to other iBGP peers.
Answer: D
3. Which three IP addresses are valid multicast addresses? (Choose three.)
A. 169.254.23.59
B. 223.254.255.254
C. 225.1.1.1
D. 227.43.34.2
E. 238.3.3.3
F. 249.1.2.3
Answer: CDE
4. Look at the picture.
The information of the question
1. Seed metric for EIGRP must have the following characteristics:
Bandwidth=512 Kbps
2. Delay=100
3. Reliability=255
4. Load=1
5. MTU=1500
Seed metric for IS-IS must be set to 50.
Only redistribute Level-1 IS-IS routes into EIGRP.
Redistribute EIGPR routes into IS-IS as Level-1 routes.
Correct Answers:
Blockade# conf t
Blockade(config)# router isis
Blockade(config-router)# redistribute eigrp 100 level-1 metric 50
Blockade(config)# router eigrp 100
Blockade(config-router)# redistribute isis level-1 metric 512 10 255 1 1500
Blockade(config-router)# redistribute connected
Blockade# copy run start
15. Refer to the exhibit. What is the effect of the distribute-list command in the R1 configuration?
A. R1 will filter only the 172.24.1.0/24 route from the R2 RIP updates.
B. R1 will permit only the 10.0.0.0/24 route in the R2 RIP updates.
C. R1 will filter the 10.1.0.0/24 and the 172.24.1.0/24 routes from the R2 RIP updates.
D. R1 will not filter any routes because there is no exact prefix match.
Answer: C
5. Which VTP information does a Catalyst switch advertise on its trunk ports when using VTP? (Choose two.)
A. VTP mode
B. STP root status
C. negotiation status
D. management domain
E. configuration revision number
Answer: DE
6. Given the above partial configuration, which two statements are true about VLAN traffic? (Choose two.)
A. VLANs 1-5 will be blocked if fa0/10 goes down.
B. VLANs 1-5 will use fa0/10 as a backup only.
C. VLANs 6-10 will use fa0/10 as a backup only.
D. VLANs 6-10 have a port priority of 128 on fa0/10.
E. VLANs 1-10 are configured to load share between fa0/10 and fa0/12.
Answer: CE
7. Examine the above configuration. What does the route map named test accomplish?
A. marks all prefixes advertised to the 10.1.1.1 neighbor with a MED of 200
B. marks all prefixes received from the 10.1.1.1 neighbor with a MED of 200
C. marks the 10.0.0.0/8 prefix advertised to the 10.1.1.1 neighbor with a MED of 200
D. marks the 10.0.0.0/8 prefix received from the 10.1.1.1 neighbor with a MED of 200
E. permits only the 10.0.0.0/8 prefix to be advertised to the 10.1.1.1 neighbor
F. permits only the 10.0.0.0/8 prefix to be received from the 10.1.1.1 neighbor
Answer: C
8. Given the following configuration on a switch interface, what happens when a host with the MAC address of 0003.0003.0003 is directly connected to the switch port? switchport mode access switchport port-security switchport port-security maximum 2 switchport port-security mac-address 0002.0002.0002 switchport port-security violation shutdown
A. The port will shut down.
B. The host will be allowed to connect.
C. The host will be refused access.
D. The host can only connect through a hub/switch where 0002.0002.0002 is already connected.
Answer: B
9. Which two table types are CEF components?(Choose two.)
A. forwarding information base
B. adjacency tables
C. neighbor tables
D. caching tables
E. route tables
Answer: AB
10. Refer to the exhibit. An administrator is verifying that a CEF FIB entry exists to destination network 192.16150.0. Given the output generated by the show ip cef and show adjacency detail commands, which three statements are true? (Choose three.)
A. There is a valid CEF entry for the destination network 192.168.150.0.
B. The "valid cached adjacency" entry indicates that CEF will put all packets going to such an adjacency to the next best switching mode.
C. The counters (0 packets, 0 bytes) indicate a problem with the 192.168.199.3 next hop IP address.
D. There is an adjacency for the 192.168.199.3 next hop IP address.
E. The number 003071506800 is the MAC address of the 192.168.199.3 next hop IP address.
F. The number 003071506800 is the MAC address of the source IP address.
Answer: ADE
11. A new workstation has consistently been unable to obtain an IP address from the DHCP server when the workstation boots. Older workstations function normally, and the new workstation obtains an address when manually forced to renew its address. What should be configured on the switch to allow the workstation to obtain an IP address at boot?
A. UplinkFast on the switch port connected to the server
B. BackboneFast on the switch port connected to the server
C. PortFast on the switch port connected to the workstation
D. trunking on the switch
Answer: C
12. When IP multicast is enabled via PIM, which mode uses the flood and prune method?
A. PIM sparse-dense
B. Bidir-PIM
C. PIM-RP
D. PIM-DM
E. PIM-SM
Answer: D
13. Router E is configured with the EIGRP variance 2 command. What path will Router E take to reach Router A?
A. only E-D-A
B. only E-B-A
C. only E-C-A
D. both E-B-A and E-C-A
E. both E-B-A and E-D-A
F. all available paths.
Answer: D
14. A medium-sized network with a redundant topology that uses core and access switches is experiencing intermittent end-station accessibility. The root bridge is on one of the core switches. It is determined that the problem occurs during STP convergence and that accessibility issues depend on the STP state of the individual switch port. What is the best way to decrease STP convergence time in this situation?
A. Enable PortFast on the core switches to accelerate the choice of a new root port.
B. Enable UplinkFast on the VLAN that is having the most accessibility problems.
C. Enable UplinkFast on the wiring closet switches at the edge of the network.
D. Enable PortFast on all IOS based switches that have been configured for bridge priority.
Answer: C
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