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2021 Jan 4A0-100 rapidshare

Q101. Based on the network diagram (clickthe Exhibit Button). 

R2 wants to connect a host on 192.168.2.0/24 behind CR1. What is the correct next-hop to use, assuming R1 is configured correctly? 

A. 10.2.3.2 

B. 10.1.1.1 

C. 10.2.3.1 

D. 10.1.1.2 

Answer: B 


Q102. Which field in the TCP header is used by the receiver to indicate how many segments it can receive? 

A. Checksum 

B. SYN 

C. Destination port 

D. Window size 

E. MTU 

Answer: D 


Q103. Which of the following is true of Ethernet half-duplex transmission? 

A. Half-duplex transmission is less efficient because the frame MTU is smaller. 

B. Half-duplex transmission is only 30-40% efficient because of collisions. 

C. Ethernet switches support half-duplex transmission only. 

D. All of the above. 

Answer: B 


Q104. Which of the following are NOT examples of a VPN service offered on the Alcatel-Lucent 7750 SR? Choose two. 

A. VPWS Virtual Private Wire Service 

B. VPLS Virtual Private LAN Service. 

C. VPRN Virtual Private Routed Networks. 

D. MLPPP Multi-link Point-to-Point protocol 

E. VPDFS Virtual Private Dark Fiber Service. 

Answer: D,E 


Q105. What is the sequence of messages sent by a host when it attempts to ping a destination for which it has no Address Resolution Protocol (ARP) cache entry? 

A. ICMP echo request, ARP request, ARP reply, ICMP echo reply. 

B. ARP request, ARP reply, ICMP echo request, ICMP echo reply. 

C. ICMP echo request, ICMP echo reply, ARP request, ARP reply. 

D. ICMP echo request, ARP reply, ARP request, ICMP echo reply. 

Answer: B 


Most up-to-date 4A0-100 practice:

Q106. A typical Alcatel-Lucent 7750 SR Media Dependent Adapter (MDA) interfaces with: 

A. A Small Form-Factor Pluggable (SFP) module. 

B. The Central Processing Unit (CPU). 

C. The Control Plane. 

D. The Switch Fabric. 

Answer: A 


Q107. Which of the following describes the normal sequence of events in the forming of an OSPF adjacency? 

A. Hello exchange, DB descriptor exchange, Link state requests and updates. 

B. DB descriptor exchange, Link state requests and updates, Hello exchange. 

C. Link state requests and updates, Hello exchange, DB descriptor exchange. 

D. Hello exchange, Link state requests and updates, DB descriptor exchange. 

Answer: A 


Q108. What is the basic unit of framing in SDH and the bit rate for its transmission? 

A. STM-1 with a bit rate of 1.544 Mbit/s 

B. STM-1 with a bit rate of 2.048 Mbit/s 

C. STM-1 with a bit rate of 51.84 Mbit/s 

D. STM-1 with a bit rate of 155.52 Mbit/s 

Answer: D 


Q109. What kind of information can a Dynamic Host Configuration Protocol (DHCP) client receive? 

A. Details of the configuration settings of each router on the network. 

B. A list of other DHCP clients. 

C. IP addresses and their lease times. 

D. Server time information 

Answer: C 


Q110. Which of the following statements best characterize Link State Routing? (Choose 2) 

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

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: B,C