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Q105. Given the associated prefix value, which of the following is a valid host address? 

A. 172.16.224.255/18 

B. 255.255.255.255/32 

C. 224.1.2.1/8 

D. 192.168.24.59/30 

Answer: A 


Q106. In an MPLS network, which device is responsible for taking an unlabeled packet and encapsulating it with an MPLS label? 

A. Ingress Label Edge Router 

B. Egress Label Edge Router 

C. Label Switching Router 

D. Next Hop Router 

Answer: A 


Q107. Choose two true statements that characterize Distance Vector Routing? 

A. Routers send a copy of their routing table to their neighbors periodically. 

B. Routers flood link information throughout the entire area. 

C. Network converges quickly (within several seconds) after a topology change. 

D. Routers do not have precise knowledge of the entire network topology. 

Answer: A,D 


Q108. What is the purpose of a broadcast address? 

A. Provides an address that refers to all the devices in a given network. 

B. Provides an address that refers to a specific group of devices in a given network. 

C. Provides an address that refers to a group of devices with the same IP addresses in different Layer 2 

D. Provides an address that refers to a single device on a given network. 

Answer: B 


Q109. Hosts in the same IP network share which common address feature? 

A. Same host numbers. 

B. Same IP address. 

C. First two bits of the IP address are set to 01. 

D. Same network prefix. 

Answer: D 


Q110. If a 4-port LAG is configured with the option of 'port-threshold 2' and 'action down' what will 

happen if the total operational links in the LAG is 2? 

A. If dynamic-cost is enabled it will adjust the cost for routing protocols such as OSPF. 

B. If dynamic-cost is not enabled it will adjust the cost for routing protocols such as OSPF by dividing the link bandwidth by 2. 

C. The LAG will be changed to an operational state of 'down'. 

D. The LAG will function with only 2 ports. There will be no change to the routing metric. 

Answer: C 


Q111. What operation is performed by an LSR when it receives an MPLS labeled packet? 

A. The LSR refers to its routing table and forwards the packet to the next LSR or LER without altering the MPLS label. 

B. The LSR refers to its MPLS label table, swaps the label and forwards the packet to the next LSR or LER. 

C. The LSR refers to its MPLS label table forwards the packet to the next LSR or LER without altering the MPLS label. 

D. The LSR refers to its MPLS label table, pops the label and forwards the packet to the next IP router. 

Answer: B 


Q112. Which of the following fields is not a field in the TCP header used for the establishment and termination of a TCP connection? 

A. TTL 

B. ACK 

C. FIN 

D. SYN 

Answer: A