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2021 Aug 4A0-100 practice
Q111. Which of the following best describes an Ethernet bridge?
A. A passive device simply used to connect two or more cables. Does not generate or amplify any signals.
B. A device that receives and retransmits a signal out its other ports, but does not do any Layer 2 analysis of the data.
C. A device that receives a signal and based on the Layer 2 destination address, makes a decision on which ports the signal should be retransmitted.
D. A device that receives a signal and based on the Layer 3 destination address, makes a decision on which ports the signal should be retransmitted.
Answer: C
Q112. What metric does a link state protocol use to choose the best path to a destination network?
A. Link bandwidth.
B. Round trip time.
C. Hop count.
D. Route preference.
Answer: A
Q113. Which compact flash on a Control/Switch processor of an Alcatel-Lucent 7750 router stores the runtime image and running configuration?
A. CF 1
B. CF 2
C. CF 3
D. Both A and B
Answer: C
Q114. Which of the following Ethernet rates requires an optical cable to operate?
A. 10 Mb/s Ethernet.
B. 100 Mb/s Ethernet.
C. 1000 Mb/s Ethernet .
D. There are copper and optical versions possible for all of these Ethernet data rates.
Answer: D
Q115. Which protocol is used by ping to verify IP network reachability? A. DCHP
B. ICMP
C. ARP
D. NAT
Answer: B
Avant-garde 4A0-100 book:
Q116. Which field in the IP routing table contains the name or address of the neighbour that advertised the prefix to the router?
A. Preference.
B. Metric.
C. Dest prefix.
D. Next hop.
Answer: D
Q117. Which of the following statements is TRUE regarding a VPWS service?
A. VPWS is a point-to-multipoint service.
B. VPWS requires MAC learning in order to forward frames to the correct destination
C. A Spanning Tree Protocol must be enabled when deploying a VPWS.
D. VPWS treats multicast traffic similar to unicast traffic.
Answer: D
Q118. Which of the following statements are TRUE regarding IP-filters? (Choose 2)
A. IP-filters may be applied on interface ingress, egress, or both.
B. Multiple IP-filters can be applied in each direction.
C. An IP-filter may only be applied to a single interface if the scope is set to template.
D. An IP-filter may have multiple match criteria per entry.
E. The default-action of an IP-filter is always drop.
Answer: A,D
Q119. What is the purpose of TCP flow control?
A. It restricts the sender from sending too much data when there is congestion in the network.
B. It allows the receiver to control the rate at which the sender transmits data.
C. It forces the sender to send only one segment at a time.
D. It allows the receiver to drop segments without the sender having to retransmit.
Answer: B
Q120. Which of the following best describes the function of the service label?
A. Customer traffic is encapsulated with a service label by the ingress PE. The service label identifies which transport tunnel to use.
B. Customer traffic is encapsulated with a service label by the egress PE. The service label identifies which transport tunnel to use.
C. Customer traffic is encapsulated with a service label by the egress PE. The service label identifies the specific service the data belongs to.
D. Customer traffic is encapsulated with a service label by the ingress PE. The service label identifies the specific service the data belongs to.
Answer: D