Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Network + > Properties Of Network Traffic > Flashcards

Properties Of Network Traffic Flashcards

1
Q

Transmission media

A

The physical channel that signals travel to allow nodes to communicate with each other.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Different types of transmission media can be classified as

A

cabled or wireless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cabled

A

A physical signal conductor is provided between two nodes. Examples include cable types such as copper or fiber optic cable. Cabled media can also be described as bounded media

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Wireless

A

Uses free space between nodes (no signal conductor), such as microwave radio. Wireless media can also be described as unbounded media.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Computers can process only information in what format>

A

Digital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Digital signaling uses a transmission technique called

A

line coding, which is essentially a series of discrete pulses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

An analog signal is characterized by

A

a smooth sine wave, oscillating between maximum and minimum values over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Sampling is also necessary when

A

an analog input, such as speech, needs to be converted to digital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The sampling rate must be

A

twice the signal bandwidth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Bandwidth

A

is the range of frequencies available to the communications channel.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

baseband transmission

A

meaning that the complete bandwidth of the media is available to a single transmission channel.. Typically used in digital signaling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

bandwidth is measured in units of time called

A

hertz (Hz)

the number of signaling cycles that can be completed per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Having a greater range of frequencies available allows the medium to

A

carry more information per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

A signal transmitted over a communications channel consists of a series of events referred to as

A

symbols

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The number of symbols that can be transmitted per second is called the

A

baud rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

bit rate is

A

the amount of information that can be transmitted, measured in bits per second (bps), or some multiple thereof

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The data rate is determined by a combination of

A

signaling speed (baud) and encoding method, but also by distance and noise.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Attenuation

A

the loss of signal strength, expressed in decibels (dB)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Noise

A

anything that gets transmitted within or close to the channel that isn’t the intended signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

two main types of copper cable

A

twisted pair and coaxial (coax)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Copper cable is used to

A

transmit electrical signals

22
Q

Electrical signals are susceptible to

A

interference and dispersion

23
Q

Examples of impedance in the copper conductor

A

signals can leak easily from the wire

noise can also leak into the wire

the signal loses strength over long links

24
Q

Fiber optic cable carries…

A

very high frequency radiation in the infrared light part of the electromagnetic spectrum

25
Q

Light signals within fiber optic cables are not susceptible to

A

interference or noise from other sources. Consequently, fiber optic cable supports higher bandwidth over longer links than copper cable

26
Q

Radio frequency (RF) propogate

A

through the air between sending and receiving antennas

27
Q

Media access control (MAC)

A

the methods a network technology uses to determine when nodes can communicate on the media and to deal with possible problems, such as two devices attempting to communicate simultaneously.

28
Q

With controlled or deterministic media access, a central device or system specifies

A

when and for how long each node can transmit

29
Q

In a contention-based MAC system

A

each network node within the same collision domain competes with the other connected nodes for use of the transmission media

30
Q

The Ethernet protocols governing contention and media access are called

A

Carrier Sense Multiple Access (CSMA) protocols

31
Q

CSMA stands for

A

Carrier Sense Multiple Access

32
Q

The two types of CSMA protocols

A

CSMA/CD with Collision Detection.

CSMA/CA with Collision Avoidance.

33
Q

unicast traffic

A

Traffic that is addressed by the sender to a single recipient

34
Q

broadcast traffic

A

transmission of the same traffic to multiple nodes

35
Q

Broadcast domains are normally established by routers, operating at which OSI layer?

A

Layer 3 (Network)

36
Q

Why might the baud rate be different from the bit rate?

A

Baud is the number of symbols measured in Hertz; bit rate is the amount of information;, measured in bits per second. A signaling technique might more than one bit per symbol

37
Q

With CSMD/CD, what will happen if a transmitting host detects a collision?

A

The sender will stop transmitting, send a jam signal, and wait before transmit again.

38
Q

Fast Ethernet

A

100 mbps

39
Q

Max distance of 1000BASE-T on UTP (Cat 5e/Cat 6/Cat 6A))

A

100 m (328 feet)

40
Q

Max distance of 1000BASE-SX (770 to 850nm) using MMF (OM1: 62.5/125), MMF (OM2: 50/125)

A

MMF OM1 = 220 m (721 feet)

MMF OM2 = 550 m (1804 feet)

41
Q

The major applications of 10GbE Ethernet are:

A

Increasing bandwidth for server interconnections and network backbones, especially in data centers and for storage area networks (SAN).
Replacing existing switched public data networks based on proprietary technologies with simpler Ethernet switches (Metro Ethernet).

42
Q

What is an MTU?

A

Maximum Transmission Unit - The max amount of data (in bytes) that a frame can carry as a payload.

43
Q

The transceiver component responsible for

A

physically connecting the node to the transmission medium is implemented in a network adapter, network adapter card, or network interface card/controller (NIC)

44
Q

The I/G bit (the first bit) of a MAC address determines

A

whether the frame is addressed to an individual node (0) or a group (1

45
Q

unicast transmission

A

When a sending interface addresses a single receiving interface

46
Q

arp -a (or arp -g)

A

shows the ARP cache contents.

47
Q

arp -s

A

PAddress MACAddress adds an entry to the ARP cache. Under Windows, MACAddress needs to be entered with hyphens between each hex byte.

48
Q

arp -d

A

deletes all entries in the ARP cache; it can also be used with IPAddress to delete a single entry

49
Q

What is an I/G Bit?

A

The part of a MAC address that determines whether a frame is addressed to an individual node (0) or group (1). The latter is used for multicast and broadcast.

50
Q

Bounded Media

A

also called cabled, is a physical signal conductor that connects two nodes. Examples of this type of transmission media are fiber optic cable and copper connections.

Network + (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions