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Q91. - (Topic 7) 

Which method does a connected trunk port use to tag VLAN traffic? 

A. IEEE 802 1w 

B. IEEE 802 1D 

C. IEEE 802 1Q 

D. IEEE 802 1p 

Answer:

Explanation: 

http://www.cisco.com/c/en/us/support/docs/lan-switching/8021q/17056-741-4.html 


Q92. - (Topic 3) 

Which of the following describe the process identifier that is used to run OSPF on a router? (Choose two) 

A. It is locally significant. 

B. It is globally significant. 

C. It is needed to identify a unique instance of an OSPF database. 

D. It is an optional parameter required only if multiple OSPF processes are running on the router. 

E. All routers in the same OSPF area must have the same process ID if they are to exchange routing information. 

Answer: A,C 

Explanation: 

https://learningnetwork.cisco.com/thread/6248 They are locally significant only, and have no bearing on the structure of any OSPF packet or LSA update. So you can have a separate process-id on every single router in your network if you so desire. 


Q93. - (Topic 3) 

Refer to the exhibit. 

A network associate has configured OSPF with the command: 

City(config-router)# network 192.168.12.64 0.0.0.63 area 0 

After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? (Choose three.) 

A. FastEthernet0 /0 

B. FastEthernet0 /1 

C. Serial0/0 

D. Serial0/1.102 

E. Serial0/1.103 

F. Serial0/1.104 

Answer: B,C,D 

Explanation: 

The “network 192.168.12.64 0.0.0.63 equals to network 192.168.12.64/26. This network has: 

+

 Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000) 

+

 Network address: 192.168.12.64 

+

 Broadcast address: 192.168.12.127 

Therefore all interface in the range of this network will join OSPF. 


Q94. - (Topic 5) 

An administrator has connected devices to a switch and, for security reasons, wants the dynamically learned MAC addresses from the address table added to the running configuration. 

What must be done to accomplish this? 

A. Enable port security and use the keyword sticky. 

B. Set the switchport mode to trunk and save the running configuration. 

C. Use the switchport protected command to have the MAC addresses added to the configuration. 

D. Use the no switchport port-security command to allow MAC addresses to be added to the configuration. 

Answer:

Explanation: 

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide 

/port_sec.pdf 

One can configure MAC addresses to be sticky. These can be dynamically learned or manually configured, stored in the address table, and added to the running configuration. If these addresses are saved in the configuration file, the interface does not need to dynamically relearn them when the switch restarts, hence enabling security as desired. 


Q95. - (Topic 3) 

Identify the four valid IPv6 addresses. (Choose four.) 

A. :: 

B. ::192:168:0:1 

C. 2000:: 

D. 2001:3452:4952:2837:: 

E. 2002:c0a8:101::42 

F. 2003:dead:beef:4dad:23:46:bb:101 

Answer: A,B,E,F 

Explanation: 

http://www.intermapper.com/ipv6validator http://www.ripe.net/lir-services/new-lir/ipv6_reference_card.pdf 


Q96. - (Topic 5) 

What is the subnet broadcast address of the LAN connected to Router1? 

A. 192.168.8.15 

B. 192.168.8.31 

C. 192.168.8.63 

D. 192.168.8.127 

Answer:

Explanation: 

The IP address assigned to FA0/1 is 192.168.8.9/29, making 192.168.8.15 the broadcast address. 


Q97. - (Topic 4) 

The network administrator is using a Windows PC application that is called putty.exe for remote communication to a switch for network troubleshooting. Which two protocols could be used during this communication? (Choose two.) 

A. SNMP 

B. HTTP 

C. Telnet 

D. RMON 

E. SSH 

Answer: C,E 

Explanation: 

PuTTY is a free implementation of Telnet and SSH for Windows and Unix platforms, and is used to connect to Cisco and other networking devices using SSH or Telnet. 

Topic 5, Infrastructure Maintenance 


Q98. - (Topic 4) 

What happens when computers on a private network attempt to connect to the Internet through a Cisco router running PAT? 

A. The router uses the same IP address but a different TCP source port number for each connection. 

B. An IP address is assigned based on the priority of the computer requesting the connection. 

C. The router selects an address from a pool of one-to-one address mappings held in the lookup table. 

D. The router assigns a unique IP address from a pool of legally registered addresses for the duration of the connection. 

Answer:

Reference: 

http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/nat_staticpat.html 

Static PAT translations allow a specific UDP or TCP port on a global address to be translated to a specific port on a local address. That is, both the address and the port numbers are translated. 

Static PAT is the same as static NAT, except that it enables you to specify the protocol (TCP or UDP) and port for the real and mapped addresses. Static PAT enables you to identify the same mapped address across many different static statements, provided that the port is different for each statement. You cannot use the same mapped address for multiple static NAT statements. 

Port Address Translation makes the PC connect to the Internet but using different TCP source port. 


Q99. - (Topic 7) 

Which entity assigns IPv6 addresses to end users? 

A. ICANN 

B. APNIC 

C. RIR 

D. ISPs 

Answer:


Q100. - (Topic 5) 

Refer to the exhibit. 

The DHCP settings have recently been changed on the DHCP server and the client is no longer able to reach network resources. What should be done to correct this situation? 

A. Verify that the DNS server address is correct in the DHCP pool. 

B. Ping the default gateway to populate the ARP cache. 

C. Use the tracert command on the DHCP client to first determine where the problem is located. 

D. Clear all DHCP leases on the router to prevent address conflicts. 

E. Issue the ipconfig command with the /release and /renew options in a command window. 

Answer:

Explanation: 

A PC will retain its DHCP assigned IP address until the lease time expires, which often times is 24 hours or more. When changes are made to the DHCP server, the client should issue the ipconfig/release and then ipconfig/renew commands to obtain a new IP address lease.