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Q31. - (Topic 7) 

Which option is the default switch port port-security violation mode? 

A. shutdown 

B. protect 

C. shutdown vlan 

D. restrict 

Answer:

Explanation: Shutdown—This mode is the default violation mode; when in this mode, the switch will automatically force the switchport into an error disabled (err-disable) state when a violation occurs. While in this state, the switchport forwards no traffic. The switchport can be brought out of this error disabled state by issuing the errdisable recovery cause CLI command or by disabling and reenabling the switchport. 

Shutdown VLAN—This mode mimics the behavior of the shutdown mode but limits the error disabled state the specific violating VLAN. 


Q32. - (Topic 3) 

Which statement describes the process ID that is used to run OSPF on a router? 

A. It is globally significant and is used to represent the AS number. 

B. It is locally significant and is used to identify an instance of the OSPF database. 

C. It is globally significant and is used to identify OSPF stub areas. 

D. It is locally significant and must be the same throughout an area. 

Answer:

Explanation: 

The Process ID for OSPF on a router is only locally significant and you can use the same number on each router, or each router can have a different number-it just doesn't matter. The numbers you can use are from 1 to 65,535. Don't get this confused with area numbers, which can be from 0 to 4.2 billion. 


Q33. - (Topic 3) 

Which parameter or parameters are used to calculate OSPF cost in Cisco routers? 

A. Bandwidth 

B. Bandwidth and Delay 

C. Bandwidth, Delay, and MTU 

D. Bandwidth, MTU, Reliability, Delay, and Load 

Answer:

Explanation: 

The well-known formula to calculate OSPF cost is Cost = 108/ Bandwidth 


Q34. - (Topic 3) 

What is the default administrative distance of the OSPF routing protocol? 

A. 90 

B. 100 

C. 110 

D. 120 

E. 130 

F. 170 

Answer:

Explanation: 

Default Distance Value Table This table lists the administrative distance default values of the protocols that Cisco supports: If the administrative distance is 255, the router does not believe the source of that route and does not install the route in the routing table. 


Q35. - (Topic 5) 

What are two recommended ways of protecting network device configuration files from outside network security threats? (Choose two.) 

A. Allow unrestricted access to the console or VTY ports. 

B. Use a firewall to restrict access from the outside to the network devices. 

C. Always use Telnet to access the device command line because its data is automatically encrypted. 

D. Use SSH or another encrypted and authenticated transport to access device configurations. 

E. Prevent the loss of passwords by disabling password encryption. 

Answer: B,D 

Explanation: 

Using a firewall is a must for networks of any size to protect the internal network from outside threats and unauthorized access. SSH traffic is encrypted while telnet is not, so it is always recommended to use SSH. 


Q36. - (Topic 3) 

What OSPF command, when configured, will include all interfaces into area 0? 

A. network 0.0.0.0 255.255.255.255 area 0 

B. network 0.0.0.0 0.0.0.0 area 0 

C. network 255.255.255.255 0.0.0.0 area 0 

D. network all-interfaces area 0 

Answer:

Explanation: 

Example 3-1 displays OSPF with a process ID of 1 and places all interfaces configured with an IP address in area 0. The network command.network 0.0.0.0 255.255.255.255 area 0.dictates that you do not care (255.255.255.255) what the IP address is, but if an IP address is enabled on any interface, place it in area 0. 

Example 3-1.Configuring OSPF in a Single Area 

router ospf 1 network 0.0.0.0 255.255.255.255 area 0 

Reference: http://www.ciscopress.com/articles/article.asp?p=26919&seqNum=3 


Q37. - (Topic 5) 

Refer to the exhibit. 

An administrator cannot connect from R1 to R2. To troubleshoot this problem, the administrator has entered the command shown in the exhibit. Based on the output shown, what could be the problem? 

A. The serial interface is configured for half duplex. 

B. The serial interface does not have a cable attached. 

C. The serial interface has the wrong type of cable attached. 

D. The serial interface is configured for the wrong frame size. 

E. The serial interface has a full buffer. 

Answer:

Explanation: 

http://www.thebryantadvantage.com/CCNACertificationExamTutorialDirectlyConnectedSeri 

alInterfaces.htm 

Since the output is not forthcoming it shows that the type of cable attached is wrong, 

though the cable is connected since it shows the cable type. 

According to the figure DTE cable should connect to R1 on interface but while examining 

using show controllers serial 0/0 command it showing that a DCE is connected so the 

wrong type of cable is being used. 


Q38. - (Topic 3) 

Which option is a valid IPv6 address? 

A. 2001:0000:130F::099a::12a 

B. 2002:7654:A1AD:61:81AF:CCC1 

C. FEC0:ABCD:WXYZ:0067::2A4 

D. 2004:1:25A4:886F::1 

Answer:

Explanation: 

IPv6 Address Notation IPv6 addresses are denoted by eight groups of hexadecimal quartets separated by colons in between them. Following is an example of a valid IPv6 address: 2001:cdba:0000:0000:0000:0000:3257:9652 Any four-digit group of zeroes within an IPv6 address may be reduced to a single zero or altogether omitted. Therefore, the following IPv6 addresses are similar and equally valid: 2001:cdba:0000:0000:0000:0000:3257:9652 2001:cdba:0:0:0:0:3257:9652 2001:cdba::3257:9652 

Reference: http://www.ipv6.com/articles/general/IPv6-Addressing.htm 


Q39. - (Topic 1) 

Which statements accurately describe CDP? (Choose three.) 

A. CDP is an IEEE standard protocol. 

B. CDP is a Cisco proprietary protocol. 

C. CDP is a datalink layer protocol. 

D. CDP is a network layer protocol. 

E. CDP can discover directly connected neighboring Cisco devices. 

F. CDP can discover Cisco devices that are not directly connected. 

Answer: B,C,E 

Explanation: 

CDP (Cisco Discovery Protocol) is a proprietary protocol designed by Cisco to help administrators collect information about both locally attached and remote devices. By using CDP, you can gather hardware and protocol information about neighbor devices containing useful info for troubleshooting and documenting the network. 


Q40. - (Topic 2) 

Refer to the exhibit. 

All devices attached to the network are shown. How many collision domains are present in this network? 

A. 2 

B. 3 

C. 6 

D. 9 

E. 15 

Answer:

Explanation: 

A switch uses a separate collision domain for each port so there are a total of 9 for each device shown. In addition to this, the switch to switch connections (3) are a separate collision domain. Finally, we add the switch to router connections (2) and the router to router connection (1) for a total of 15.