Vcu Test 1 Kasper Info 370

Front 1

The decimal number 255 is equal to the hexadecimal number

Back 1

ff

Front 2

________ can be defined as the weakening of a signal's strength as it travels through a circuit.

dB

Ambiguation

attenuation

representation

Back 2

Ambiguation

Front 3

A switch receives a frame with a unicast MAC address, but the switch does not have a entry in its address forwarding table for the frame's MAC destination address. What does the switch do?

Filter the frame

Forward the frame

Delete the frame

Flood the frame

Back 3

Flood the frame

Front 4

In the IEEE 802 implementation, the Logical Link Control (LLC) sits above ________.

MAC Address

Physical

Ethernet

Media Access Control (MAC)

Back 4

Media Access Control (MAC)

Front 5

The octal number 734 is equal to the binary number

Back 5

111011100

Front 6

When connecting two PCs, what cable is used?

Back 6

crossover

Front 7

Attenuation is the ________ of a signal's strength as it travels over a medium.

Back 7

decrease

Front 8

With a(n) ________ circuit, bandwidth is usually measured in bps (bits per second).

Back 8

digital

Front 9

Which of the following is not susceptible to EMI?

CAT 6

twisted pair

fiber

coax

Back 9

fiber

Front 10

QAM is one popular combination method and stands for:

Back 10

quadrature amplitude modulation

Front 11

The binary number 10100101 is equal to the hexadecimal number

Back 11

a5

Front 12

What is one benefit of twisting wires around each other at regular intervals (for twisted-wire pairs)?

The wires do not take up as much space

Attenuation is reduced

The wires remain more secure

Noise on an individual wire is significantly reduced

Back 12

Noise on an individual wire is significantly reduced

Front 13

The maximum lenght of an Ethernet segment using twisted pair is:

Back 13

100m

Front 14

The physical layer of the OSI data communication networking model is responsible for the ________ of bits, line configuration, physical topology, and the transmission mode.

Back 14

synchronization

Front 15

What does PDU stand for?

Back 15

protocol data unit

Front 16

the first half of a MAC address is the:

Back 16

organizationally unique identifier

Front 17

Which of the following commands is used in Windows to reveal the NIC MAC address?

Back 17

ipconfig /all

Front 18

What type of cable is characterized as flat, light blue, and is needed to configure a router?

Back 18

rollover

Front 19

Ethernet was created by Xerox Corporation and later formalized by the Institute of Electrical and Electronics Engineers (IEEE) as what standard?

Back 19

802.3

Front 20

The hexadecimal number CAC is equal to the decimal number

Back 20

3244

Front 21

LED stands for

Back 21

light emitting diode

Front 22

The binary number 110010110 is equal to the decimal number

Back 22

406

Front 23

WDM stands for:

Back 23

wavelength division multiplexing

Front 24

Of the following modulation techniques, which one is the most susceptible to noise and distortion during transmission?

phase

amplitude

these are all equally susceptible

frequency

Back 24

amplitude

Front 25

Which layer in an OSI data communication networking model is responsible for packets?

Back 25

network layer

Front 26

The IEEE divided the data link layer into which two parts?

Back 26

Logical Link Control and Media Access Control

Front 27

The hexadecimal number ACE is equal to the binary number

Back 27

101011001110

Front 28

The three kinds of Type 2 frames are:

Back 28

information (I), supervisory (S), unnumbered (U)

Front 29

An example of ________ communication is the use of walkie-talkies that permit two users to speak or listen to each other, but not both at the same time.

Back 29

half-duplex

Front 30

A millisecond is:

1/1,000 second

1/10,000 second

1/1,000,000,000 second

1/1,000,000 second

Back 30

1/1,000 second

Front 31

What is layer 2 of the TCP/IP model called

Back 31

Internet

Front 32

Which layer in an OSI data communication networking model ensures that the entire message sent from a sender to a receiver has been delivered in proper order?

Back 32

transport layer

Front 33

The hexadecimal number FACE is equal the the octal number

Back 33

175316

Front 34

A ________ is a specially formatted sequence of bits and occurs at the data link layer.

modulation

frame

transmission

packet

Back 34

frame

Front 35

In Ethernet, the default maximum payload is:

Back 35

1500 bytes

Front 36

In Ethernet, the default maximum payload is:

Back 36

Network Interface Card

Front 37

The ________ layer of the OSI data communication networking model takes packets from the network layer and packages the bits into units called frames and then attaches a physical address to each frame.

Back 37

data link

Front 38

A network layer service is implemented using a(n)

Back 38

protocol

Front 39

Which if the following is a valid MAC address

AAD909075189

AAD9090751

AAD909075189B

AAG909075189

Back 39

AAD909075189

Front 40

Is the method used to digitally represent, convert, and reconstitute analog data to an equivalent digital signal:

Phase-Division Multiplexing

Frequency-Division Multiplexing

Quadriture Amplitude Modulation Pulse-Code Modulation

Time-Division Multiplexing

Back 40

Pulse-Code Modulation

Front 41

Physical addressing is an important function of the ________ layer.

Back 41

data link

Front 42

________ are devices that convert an analog signal into an digital signal on the sending end and then, at the receiving end, reconvert the signal from digital back to analog.

Back 42

Codecs

Front 43

What is a LAN's likely first response to correct a transmission error

Back 43

The data are simply retransmitted.

Front 44

n everyday example of ________ is a one-way street

multiplex

half-duplex

full-duplex

simplex

Back 44

simplex

Front 45

The OSI layer that has neither a header nor a trailer is:

Back 45

Physical

Front 46

One micron is about 1/________ of an inch.

Back 46

25,000

Front 47

Memoranda, published by the Internet Engineering Task Force, that describe methods, behaviors, research, or innivations applicable to the workings of the Internet and Internet-connected systems are known as:

Back 47

request for comments

Front 48

The so-called "end-to-end" layers in the OSI model are:

Back 48

application, presentation, session, and transport

Front 49

TDM stands for

Back 49

time division multiplexing

Front 50

What are the layers of the Open Systems Interconnection (OSI) model?

Back 50

hysical, data link, network, transport, session, presentation, application