642-831 Exam

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642-831 Exam Description

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Exam : Cisco 642-831
Title : CCNP's Cisco Internetwork Troubleshooting (CIT)


1. Over the past year the amount of traffic between certain access-layer network segments and the company's intranet website has increased dramatically. The CPU utilization levels of network devices and intranet server are well within acceptable limits. Congestion has been observed at the connection between the access-layer switches and the distribution layer, multilayer switches. What should be done to help eliminate congestion?
A. Upgrade access-layer switches to better performing models.
B. Implement QoS features on the access-layer switches.
C. Upgrade the end user Gigabit Ethernet links.
D. Increase the bandwidth on the upstream links from the access-layer switches.
E. Upgrade the distribution layer, multilayer switches to better performing models.
F. Implement QoS features on the distribution layer, multilayer switches.
Answer: D

2. A network administrator is developing network configuration documentation for a Layer 2 switch and is utilizing the above output to gather information. Which command did the administrator issue to receive this output?
A. show spanning-tree
B. show vlan
C. show interfaces capabilities
D. show interfaces trunk
E. show etherchannel summary
Answer: D

3. Refer to the exhibit. An IPSec connection has failed between R2 and R3. What is the most likely cause of the problem?
A. The hash methods do not match.
B. The Diffie-Hellman group settings do not match.
C. Pre-shared keys do not match.
D. There is an invalid peer address.
Answer: C

4. The above message appears on your console screen. Given this information, which statement is true?
A. The wrong peer is set on the crypto map.
B. The crypto algorithms do not match.
C. The DSS key is missing or invalid.
D. The IP address for the remote peer is incorrect.
Answer: B

5. LAB
Do the configuration on the Management PC of Miami
Take notice, the router name and IP address will change in your real exam, Please understand these command.
Enanble and input the password ???cisco??à
Show cdp nei det??§find the ip address of S0 interfact of the middle router??
telnet 192.168.143.8(this address is the ip address of S0 interfact of the middle router)
Enanble and input the password ???cisco??à (now you have telneted to the middle router)
conf t
router rip
net 192.168.143.0
net 172.16.0.0
exit
int s1
ip add 172.16.71.2 255.255.255.0
no shut
int s0
ip add 192.168.143.2 255.255.255.0
6. Which pieces of information would be relevant when creating an end-system network configuration table? (Choose four.)
A. routing protocol characteristics
B. operating system and version
C. IP address and subnet mask
D. network media type
E. DNS server address
F. default gateway address
Answer: BCEF