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Principles of Computer Networks > Chapter 3 - Ethernet Basics > Flashcards

Chapter 3 - Ethernet Basics Flashcards

1
Q

The ___ is unique to each individual NIC.

A

MAC Address

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2
Q

When extra “filler” data is needed in a packet, a/an _______ is added.

A

pad

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3
Q

A network connection that can send or receive, but not send and receive, a signal is called a ______ connection.

A

half-duplex

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4
Q

The ____ in an ethernet frame describes the protocol used in that frame.

A

type

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5
Q

Appended to the from of the frame is the ____.

A

preamble

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6
Q

A hub acted as a _______ in that it copied all incoming signals to every connected port.

A

repeater

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7
Q

Connecting switches incorrectly can create a ____, which can make the whole network stop working

A

bridging loop

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8
Q

The _____ enables Ethernet nodes to recognize receiving bad data.

A

frame check sequence (FCS)

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9
Q

___ had a maximum distance between node and hub of 100 meters, whereas _____ had a maximum distance of 2000 meters.

A

10BaseT, 10BaseFL

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10
Q

A(n) ____ can be used to interconnect different Ethernet types.

A

media converter

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11
Q

How are the connectors wired on a crossover cable?

A. One end is TIA/EIA 568A; the other end is TIA/EIA 568B.

B. Both ends are TIA/EIA 568A.

C. Both ends are TIA/EIA 568B.

D. One end is an RJ-45; the other end is an RG-6.

A

One end is TIA / EIA 568A; the other end is TIA / EIA 568B

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12
Q

What items make up the CSMA/CD system used in Ethernet networks? (Select three.)

A. Collision avoidance

B. Carrier sense

C. Multiple access

D. Collision detection

A

Carrier sense, Multiple access, Collision detection

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13
Q

What happens when two computers transmitted through a hub simultaneously?

A. Nothing happened.

B. The terminators prevented any transmission problems.

C. Their signals reflected back down the cable to their points of origin.

D. A collision occured.

A

A collision occurred

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14
Q

What is a group of nodes that can at any point send messages at the same time, causing a collision?

A. Collision domain

B. Ethernet

C. Fast Ethernet

D. Sneakernet

A

Collision domain

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15
Q

Which committee is responsible for Ethernet standards?

A. IEEE 803.2

B. IEEE 803.3

C. IEEE 802.2

D. IEEE 802.3

A

IEEE 802.3

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16
Q

What type of cabling did the first star-bus topology Ethernet networks use?

A. FTP

B. SFTP

C. STP

D. UTP

A

UTP

17
Q

What is the purpose of a preamble in an Ethernet frame?

A. It gives the receiving NIC time to realize a frame is coming and to know when the frame starts.

B. It provides the receiving NIC with the sending NIC’s MAC address so communication can continue.

C. It provides error-checking to ensure data integrity.

D. It contains a description of the data that is to follow so the receiving NIC knows how to reassemble it.

A

It gives the receiving NIC time to realize a frame is coming and to know when the frame starts.

18
Q

Which ports must you use to interconnect two switches with a crossover cable?

A. Regular ports on both switches.

B. Uplink port on one switch; regular port on the other switch.

C. Regular port on the root bridge switch; uplink port on the branch switch.

D. You can’t do this; you need to use a straight-through cable.

A

Uplink port on one switch; regular port on the other switch.

19
Q

For what purpose is a crimping tool used?

A. To splice a 10BaseT cable with a 10BaseFL cable

B. To attach an RJ-45 connector to a UTP cable

C. To attach a 10BaseT cable to a media converter

D. To connect two switches together

A

To attach an RJ-45 connector to a UTP cable.

20
Q

Which of the following is not a limitation on 10BaseT cable?

A. Maximum speed of 10 Mbps

B. Maximum distance between hub and node of 100 feet

C. Maximum of 1024 nodes per hub

D. Minimum Cat 3 or better UTP with RJ-45 connectors

A

Maximum distance between hub and node of 100ft.

21
Q

Which of the following is not a limitation on 10BaseFL cable?

A. Maximum speed of 10 Mbps

B. Maximum distance between hub and node of 2000 meters

C. Maximum of 1024 nodes per hub

D. Minimum Cat 3 or better UTP with RJ-45 connectors

A

Minimum cat 3 or better UTP with RJ-45 connectors

22
Q

Which part of an Ethernet frame enables a switch to send the frame only to the intended recipient?

A. Preamble

B. Destination MAC address

C. Source MAC address

D. Type

A

Destination MAC address

23
Q

Which part of the frame will a NIC automatically expand to make the Ethernet frame up to the 64-byte minimum size?

A. Preamble

B. Type

C. Data

D. Pad

A

Pad

24
Q

What feature of switches prevents the problem of bridging loops?

A. STP

B. TCP/IP

C. IEEE 802.3

D. UTP

A

STP

25
Q

What feature of switches keeps track of which MAC address goes to each port?

A. FCS

B. SAT

C. STP

D. UTP

A

SAT

Principles of Computer Networks (12 decks)

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