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2021 Aug 4A0-100 test question
Q61. What happens immediately after an Ethernet switch receives an Ethernet frame?
A. It records the destination MAC address and the interface on which it arrived.
B. It records the source MAC address and the interface on which it arrived.
C. It floods the frame out of all its interfaces except the interface on which the frame arrived.
D. It transmits the frame out of the appropriate interface.
Answer: B
Q62. Which of the following is a characteristic of Port Address Translation?
A. Resolves a Mac address given a specific IP address.
B. Allows a single public IP address to represent multiple private IP addresses simultaneously.
C. Maps a private address to a well known port number.
D. Provides a one to one mapping from a private to a public address.
Answer: B
Q63. Which organization first considered cross-platform networking support to be a necessity?
A. IBM.
B. US Military.
C. Alcatel-Lucent.
D. NASA.
E. Bell Labs
Answer: B
Q64. In regards to the Alcatel-Lucent 7750 SR-12 router, how many of the front access card slots are dedicated for Control Processors?
A. 1
B. 2
C. 7
D. 10
Answer: B
Q65. Which of the following are accurate statements about the PE device in a service providers MPLS network? (Select three)
A. A PE router only connects to CE devices.
B. A PE router only connects to P routers.
C. A PE router connects to at least one P router.
D. A PE router connects to at least one CE device.
E. PE routers support many different interface types connecting to CE devices.
F. PE routers only support Ethernet interfaces connecting to the CE.
Answer: C,D,E
Most up-to-date 4A0-100 exam cost:
Q66. Which of the following statements describes the purpose of the Transport Layer in the TCP/IP stack?
A. Provides a data transport service to higher protocol layers.
B. Provides a data transport service for routing and control protocols such as OSPF and ICMP.
C. Provides a universal address plan to uniquely identify every device in the network.
D. Defines a standard method for framing data for transmission on the physical network medium.
Answer: A
125. Based on the network diagram (click the Exhibit Button),
what are the prefix, mask, and next-hop used on CR1 to setup a default static route to R1?
A. 0.0.0.0/0 next-hop 10.2 3.2
B. 0.0.0.0/32 next-hop 10.2.3.2
C. 10.2.3.2/32 next-hop 0.0.0.0/0
D. 0.0.0.0/0 next-hop 192.168.2.0
Answer: A
Q67. Which ATM adaptation layer is commonly used for transporting IP datagrams or non-real time data?
A. AAL0
B. AAL1
C. AAL2
D. AAL3/4
E. AAL5
Answer: E
Q68. 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
Q69. Which of the following best describes an autonomous system?
A. An autonomous system is a network or group of networks operating under one administrative authority.
B. An autonomous system is another term for the collection of routers that make up the Internet
C. An autonomous system is a network or group of networks from many organizations running different IGP routing protocols, but all running BGP.
D. An autonomous system is a loosely defined term that can refer to any organization that has a connection to the Internet.
Answer: A
Q70. (Click the Exhibit Button below)
An Ethernet Local Area Network (LAN) consists of the
following components:
Four 24-port hubs & Two 16-port switches
How many broadcast domains are on this LAN?
A. 1
B. 2
C. 5
D. 32
Answer: A