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Q141.  - (Topic 4)

Which protocol is an open standard protocol framework that is commonly used in VPNs, to provide secure end-to-end communications?

A. RSA

B. L2TP

C. IPsec

D. PPTP

Answer: C

Explanation:

IPSec is a framework of open standards that provides data confidentiality, data integrity, and data authentication between participating peers at the IP layer. IPSec can be used to protect one or more data flows between IPSec peers.


Q142.  - (Topic 5)

Which statement is correct regarding the operation of DHCP?

A. A DHCP client uses a ping to detect address conflicts.

B. A DHCP server uses a gratuitous ARP to detect DHCP clients.

C. A DHCP client uses a gratuitous ARP to detect a DHCP server.

D. If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict.

E. If an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administrator.

F. If an address conflict is detected, the address is removed from the pool and will not be reused until the server is rebooted.

Answer: D

Explanation:

An address conflict occurs when two hosts use the same IP address. During address assignment, DHCP checks for conflicts using ping and gratuitous ARP. If a conflict is detected, the address is removed from the pool. The address will not be assigned until the administrator resolves the conflict.

(Reference: http://www.cisco.com/en/US/docs/ios/12_1/iproute/configuration/guide/1cddhcp.html)


Q143.  - (Topic 5)

Refer to the exhibit.

What is the cause of the Syslog output messages?

A. The EIGRP neighbor on Fa0/1 went down due to a failed link.

B. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process, causing the adjacency to go down.

C. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go down.

D. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.

Answer: C

Explanation:

The first lines of the message show that a configuration change was made, and that the fa0/1 interface changed to a state of administratively down. This can only be done by issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor adjacency to go down.


Q144.  - (Topic 5)

Syslog was configured with a level 3 trap. Which 3 types of logs would be generated (choose four)

A. Emergencies

B. Alerts

C. Critical

D. Errors

E. Warnings

Answer: A,B,C,D

Explanation:

The Message Logging is divided into 8 levels as listed below: Level Keyword Description

0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist

3 errors Error conditions exist

4 warnings Warning conditions exist

5 notification Normal, but significant, conditions exist 6 informational Informational messages

7 debugging Debugging messages

The highest level is level 0 (emergencies). The lowest level is level 7. If you specify a level with the “logging console level” command, that level and all the higher levels will be

displayed. For example, by using the “logging console warnings” command, all the logging of emergencies, alerts, critical, errors, warnings will be displayed.


Q145.  - (Topic 5)

Refer to the exhibit.

What statement is true of the configuration for this network?

A. The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported.

B. Because of the addressing on interface FastEthernet0/1, the Serial0/0 interface address will not support the NAT configuration as shown.

C. The number 1 referred to in the ip nat inside source command references access-list number 1.

D. ExternalRouter must be configured with static routes to networks 172.16.1.0/24 and 172.16.2.0/24.

Answer: C

Explanation:

The “list 1 refers to the access-list number 1.


Q146.  - (Topic 6)

A network administrator is configuring ACLs on a Cisco router, to allow traffic from hosts on networks 192.168.146.0, 192.168.147.0, 192.168.148.0, and 192.168.149.0 only. Which

two ACL statements, when combined, would you use to accomplish this task? (Choose two.)

A. access-list 10 permit ip 192.168.146.0 0.0.1.255

B. access-list 10 permit ip 192.168.147.0 0.0.255.255

C. access-list 10 permit ip 192.168.148.0 0.0.1.255

D. access-list 10 permit ip 192.168.149.0 0.0.255.255

E. access-list 10 permit ip 192.168.146.0 0.0.0.255

F. access-list 10 permit ip 192.168.146.0 255.255.255.0

Answer: A,C

Explanation:

“access-list 10 permit ip 192.168.146.0 0.0.1.255” would allow only the 192.168.146.0 and

192.168.147.0 networks, and “access-list 10 permit ip 192.168.148.0 0.0.1.255” would allow only the 192.168.148.0 and 192.168.149.0 networks.

Topic 7, Infrastructure Management


Q147.  - (Topic 8)

Refer to the exhibit.

You have discovered that computers on the 192 168 10 0/24 network can ping their default gateway, but they cannot connect to any resources on a remote network Which reason for the problem is most likely true?

A. The 192.168.12 0/24 network is missing from OSPF

B. The OSPF process ID is incorrect

C. The OSPF area number is incorrect.

D. An ARP table entry is missing for 192.168.10.0.

E. A VLAN number is incorrect for 192.168.10.0.

Answer: C


Q148.  - (Topic 7)

Which protocol can cause overload on a CPU of a managed device?

A. Netflow

B. WCCP

C. IP SLA

D. SNMP

Answer: D

Explanation:

Sometimes, messages like this might appear in the router console:

%SNMP-3-CPUHOG: Processing [chars] of [chars]

They mean that the SNMP agent on the device has taken too much time to process a request.

You can determine the cause of high CPU use in a router by using the output of the show process cpu command.

Note: A managed device is a part of the network that requires some form of monitoring and

management (routers, switches, servers, workstations, printers…).


Q149.  - (Topic 5)

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the maximum number of subnets. Which network address and subnet mask meet this requirement?

A. 192.168.252.0 255.255.255.252

B. 192.168.252.8 255.255.255.248

C. 192.168.252.8 255.255.255.252

D. 192.168.252.16 255.255.255.240

E. 192.168.252.16 255.255.255.252

Answer: B

Explanation:

A subnet mask of 255.255.255.248 will allow for up to 6 hosts to reside in this network. A subnet mask of 255.255.255.252 will allow for only 2 usable IP addresses, since we cannot

use the network or broadcast address.


Q150.  - (Topic 8)

Which command can you enter to route all traffic that is destined for 192.168.0.0/20 to a specific interface?

A. router(config)#ip route 192.168.0.0 255.255.240.0 GigabitEthernet0/1

B. router(config)#ip route 0.0.0.0 255.255.255.0 GigabitEthernet0/1

C. router(config)#ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/1

D. router(config)#ip route 192.168.0.0 255.255.255.0 GigabitEthernet0/1

Answer: A