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Free Practice Quiz Question List

2 Link-Layer Networking and Ethernet Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Link-Layer Networking and Ethernet, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: An Ethernet frame’s Frame Check Sequence can help a receiver detect certain transmission errors, but it does not correct them.

  1. A

    True

  2. B

    False

02
Choose one
1 point

A computer sends an IP packet over Ethernet. Where does the IP packet go in the Ethernet frame?

  1. A

    In the frame’s destination MAC address

  2. B

    In the frame’s payload

  3. C

    In the frame’s FCS

  4. D

    Outside the Ethernet frame

03
Fill in the blank
1 point

A switch learns which MAC addresses are reachable through which ports by examining the of incoming frames.

04
True or false
1 point

True or false: On modern full-duplex switched Ethernet links, collision handling with CSMA/CD is generally not needed.

  1. A

    True

  2. B

    False

05
Choose one
1 point

A host needs to communicate with a destination on a different IP network. Which device is required to forward traffic between the links?

  1. A

    A hub

  2. B

    A switch that forwards only within the local link

  3. C

    A router

  4. D

    A device that supplies an Ethernet FCS

06
Choose all
1 point

Select all correct descriptions of Ethernet frame destination types.

  1. A

    A unicast frame is intended for one destination.

  2. B

    A broadcast frame is intended for all devices in the local broadcast domain.

  3. C

    A multicast frame is intended for a group.

  4. D

    A broadcast frame is normally forwarded into every VLAN.

07
Written response
1 point

Which IEEE standard describes Ethernet’s data-link functions? Enter the standard number.

08
Choose all
1 point

Select all items that are fields or contents of a basic Ethernet MAC frame, from the destination address through the FCS.

  1. A

    Destination MAC address

  2. B

    Source MAC address

  3. C

    Length/type field

  4. D

    Payload and padding

  5. E

    Frame Check Sequence

  6. F

    Preamble

09
Fill in the blank
1 point

An IEEE 802.1Q VLAN tag adds to the conventional Ethernet frame-size count.

10
Choose one
1 point

A link carries traffic for multiple VLANs. What is the purpose of an IEEE 802.1Q VLAN tag on that link?

  1. A

    To correct transmission errors in the FCS

  2. B

    To identify VLAN traffic on links carrying multiple VLANs

  3. C

    To replace the source and destination MAC addresses

  4. D

    To make communication between VLANs possible without routing

11
Written response
1 point

A basic Ethernet MAC frame has a conventional maximum size of 1518 bytes. An IEEE 802.1Q VLAN tag adds four bytes. What is the conventional maximum size of the tagged frame? Enter the number of bytes.

12
Open ended
1 point

Computer A sends a frame to Computer B through a switch. The switch has not yet learned B’s MAC address. Explain what the switch does with A’s frame, what it learns when B replies, and how that learning affects later delivery to B.

13
Choose one
1 point

Two devices connect to the same physical switch but belong to different VLANs. Which statement best describes their communication?

  1. A

    The devices are in different broadcast domains, and communication between them requires routing.

  2. B

    The devices are in the same broadcast domain, and the switch forwards their frames directly between VLANs.

  3. C

    The devices cannot use the same physical switch.

  4. D

    The VLAN tag allows frames to cross between the VLANs without routing.

14
Choose one
1 point

An office network connects computers and printers throughout one building. Which description best fits this network?

  1. A

    A network connecting devices across different IP networks through routers

  2. B

    A network connecting devices in a limited local area, such as an office or campus

  3. C

    A physical medium that carries signals between devices

  4. D

    A frame field used to detect transmission errors

15
Choose one
1 point

An Ethernet II frame needs to indicate which protocol its payload contains. Which frame field serves this purpose?

  1. A

    The Length/type field

  2. B

    The Frame Check Sequence

  3. C

    The Source MAC address

  4. D

    The padding

16
Choose one
1 point

A receiver finds that an Ethernet frame's FCS check indicates an error. What does the FCS provide?

  1. A

    It forwards the frame to the correct switch port

  2. B

    It identifies the sending interface

  3. C

    It corrects corrupted payload data

  4. D

    It lets the receiver check for certain transmission errors

17
True or false
1 point

True or false: Original shared-medium Ethernet used CSMA/CD to handle collisions.

  1. A

    True

  2. B

    False

18
Written response
1 point

Using the conventional frame-size count from the destination address through the FCS, what is the minimum size of a basic Ethernet MAC frame, in bytes?

19
Written response
1 point

Which IEEE standard specifies VLAN-aware bridging and the use of VLAN tags to identify VLAN traffic on links carrying multiple VLANs?

20
Choose one
1 point

A switch receives a frame whose destination MAC address is not in its forwarding table. What does it generally do?

  1. A

    It sends the frame only back through the port where it arrived

  2. B

    It floods the frame to other ports in the same VLAN, except the incoming port

  3. C

    It forwards the frame to every port on the physical switch, including ports in other VLANs

  4. D

    It drops the frame because the destination is unknown