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2021 Sep 4A0-100 test engine
Q51. Which of the following are protocols belonging to the OSI suite of protocols? (Choose two)
A. OSPF
B. BGP
C. X.500
D. IS-IS
E. Ethernet
Answer: C,D
Q52. 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
Q53. Host A is transmitting data to host B on a TCP connection. What is the purpose of the ACK sent by host B?
A. The ACK tells the host A that host B wishes to establish a session.
B. The ACK tells host A the sequence number of the segment that was just received by host B.
C. The ACK tells host A the sequence number of the next segment that host B expects to see.
D. The ACK is flow control from host B and tells host A to reduce its transmission rate.
Answer: C
Q54. If a customer requires a multipoint layer 2 VPN service between three or more locations which VPN service is best suited for this customer?
A. Virtual Private Wire Service
B. Virtual Private LAN Service
C. Virtual Private Routed Networks
D. Virtual Private Dark Fibre Service
Answer: B
Q55. Which of the following statements best describe the purpose of UDP? (Choose two)
A. Provides a connectionless delivery service.
B. Provides a connection oriented delivery service
C. Provides an unreliable transmission service,
D. Provides a reliable transmission service.
Answer: A,C
Regenerate 4A0-100 latest exam:
Q56. How does LDP select the path used for an LSP?
A. LDP monitors the available bandwidth on all links and signals the LSP based on this information.
B. LDP uses the shortest hop-count between two endpoints for the LSP.
C. LDP must be configured hop-by-hop by the service provider.
D. LDP follows the path chosen by the IGP.
Answer: D
Q57. What is available for auto completion of commands within the CLI on the Alcatel-Lucent 7750 SR Service Router?
A. Type the first letters of the command, then press Ctrl C
B. Type the first letters of the command, then press Esc
C. Type the first letters of the command, then press Tab
D. Type the first letters of the command, then type?
Answer: C
Q58. Which of the following are correct statements about MPLS labels? (Choose 3)
A. A sequence of label actions from one LER to another LER represents a logical tunnel known as an LSP.
B. MPLS labels must be dynamically signaled.
C. Labels are globally significant to the MPLS network.
D. MPLS labels may be dynamically signaled or statically assigned by the service provider.
E. Labels are locally significant to the MPLS router.
Answer: A,D,E
Q59. Which of the following is a characteristic of the IP layer?
A. Provides an unreliable, connectionless data transmission service.
B. Provides a mechanism for flow control.
C. Verifies the integrity of all received datagrams.
D. Provides services equivalent to the OSI data link layer.
Answer: A
Q60. What does a VPLS solution look like from a customers perspective?
A. To the customer, it appears as if all sites are directly connected by a single cable.
B. To the customer, it appears as if all sites are connected through a single switched LAN.
C. To the customer, it appears as if all sites are connected through a single router.
D. To the customer, it appears as if all sites are connected through a series of private point-to-point connections.
Answer: B