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Home Alcatel-Lucent 4A0-100

Alcatel-Lucent 4A0-100 Exam Practice Questions (P. 5)

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Question #41
(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?

  1. A
    1
  2. B
    2
  3. C
    5
  4. D
    32

Correct Answer:
A

Question #42
Which of the following best describes an Ethernet bridge?
  1. A
    A passive device simply used to connect two or more cables. Does not generate or amplify any signals.
  2. B
    A device that receives and retransmits a signal out its other ports, but does not do any Layer 2 analysis of the data.
  3. 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.
  4. 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.

Correct Answer:
C

Question #43
What happens immediately after an Ethernet switch receives an Ethernet frame?
  1. A
    It records the destination MAC address and the interface on which it arrived.
  2. B
    It records the source MAC address and the interface on which it arrived.
  3. C
    It floods the frame out of all its interfaces except the interface on which the frame arrived.
  4. D
    It transmits the frame out of the appropriate interface.

Correct Answer:
B

Question #44
What is the behavior of a typical Ethernet switch when it receives a frame with a uncast destination MAC address? (Choose two)
  1. A
    The switch floods the frame out of all ports except the port on which it was received.
  2. B
    The switch looks in its FDB. If the source address is unknown it discards the frame.
  3. C
    The switch looks in its FDB. If the destination address is known it forwards the frame out the appropriate interface.
  4. D
    The switch looks in its FDB. If the destination address is unknown it floods the frame out all ports except the port on which it was received.
  5. E
    The switch looks in its FDB. If the destination address is unknown it discards the frame.

Correct Answer:
CD

Question #45
Which technologies can be used with Ethernet switches to achieve redundancy? (Choose two)
  1. A
    LAG
  2. B
    OSPF
  3. C
    RIP
  4. D
    STP

Correct Answer:
AD

Question #46
In what type of network is a broadcast storm likely to occur?
  1. A
    An Ethernet network with redundant paths not running STP.
  2. B
    An ATM network.
  3. C
    A SONET network.
  4. D
    All of the above.

Correct Answer:
A

Question #47
What problems was Spanning Tree Protocol (STP) primarily designed to solve? (Choose two):
  1. A
    Providing path redundancy.
  2. B
    Preventing loops.
  3. C
    Handling collisions.
  4. D
    Allowing flooding of multicast traffic.

Correct Answer:
AB

Question #48
Which of the following is a feature of a VLAN?
  1. A
    A VLAN allows multiple Ethernet switches to be connected in a single broadcast domain.
  2. B
    A VLAN allows multiple Ethernet switches to be connected in a single collision domain.
  3. C
    A VLAN can separate ports on the same switch into different broadcast domains.
  4. D
    A VLAN can separate ports on the same switch into different collision domains.

Correct Answer:
C

Question #49
What is required if devices on different VLANs wish to communicate with each other?
  1. A
    Devices on different VLANs cannot communicate with each other.
  2. B
    Devices on different VLANs can communicate with each other as long as they are connected to the same switch.
  3. C
    Devices on different VLANs can communicate with each other as long as the switches they are attached to are connected to each other with an Ethernet connection.
  4. D
    Devices on different VLANs can communicate with each other if there is an IP router to connect the VLANs.

Correct Answer:
D

Question #50
A 24 port Ethernet switch is configured with VLAN 100 on ports 1 - 8, VLAN 200 on ports 9 - 16 and VLAN 300 on ports 17 - 24. Which of the following describes the behavior of the switch when a broadcast frame is received on port 1?
  1. A
    The switch will discard the broadcast frame because there is no specific destination address.
  2. B
    The switch will flood the broadcast frame on all ports on which the switch has seen frames from attached devices
  3. C
    The switch will flood the broadcast frame on ports 2 to 8.
  4. D
    The switch will flood the broadcast frame on all 24 ports.

Correct Answer:
C

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