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Q121. Which of the following is NOT a field in a TCP header?
A. Source port.
B. MTU.
C. Sequence number.
D. Acknowledgement number.
E. Window size.
Answer: B
Q122. Multiple SAPs may be defined on the same physical port and may be used for different services.
A. True
B. False
Answer: A
Q123. A CE device has a physical connection to which device in the service providers MPLS network?
A. CE always connects to a PE router.
B. CE always connects to a P router.
C. CE always connects to another CE device.
D. The CE does not connect to the service provider network.
Answer: A
Q124. Which of the following is TRUE regarding Ethernet half-duplex transmission?
A. Half-duplex transmission is less efficient because the frame MTU is smaller.
B. An end-station connected to a hub will always be half-duplex.
C. Ethernet switches only support half-duplex transmission.
D. All of the above.
Answer: B
Q125. Which field in the Routing Information Base (RIB) determines the direction frames will egress the node?
A. Preference
B. Metric
C. Dest prefix
D. Next-hop
E. Cost
Answer: D
122. Which of the following is a characteristic of a static route?
A. Responds in real time to network failures.
B. Can only be used for routing within an autonomous system.
C. Uses a hop-count metric to determine the best route to a network.
D. Explicitly defines the next-hop based on operator input.
Answer: D
Q126. What is the purpose of the Data Link Layer in the OSI model?
A. The Data Link Layer is responsible for encapsulating the packet into a frame for transmission on the transmission media.
B. The Data Link Layer is responsible for encapsulating the packet into an IP header and routing the packet.
C. The Data Link Layer is responsible for formatting the packet for applications such as JPEG format.
D. The Data Link Layer is responsible for timing of the signals on the transmission media
Answer: A
Q127. The TiMOS-m.n.Y.Z software image file is software that:
A. Contains all the components required to configure and run protocols on the Alcatel-Lucent 7750 SR/7450 ESS.
B. Loads the router configuration.
C. Transfers the router configuration from the router to the network management system.
D. Loads the router software image.
Answer: A
Q128. A network administrator is creating a subnet plan for the address 172.16.0.0/16. The network must support 459 hosts on each subnet while providing the maximum number of subnets. What subnet mask should be used?
A. 255.255.0.0
B. 255.255.128.0
C. 255.255.224.0
D. 255.255.254.0
Answer: D