Brainscape's Knowledge GenomeTM

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


See full index

IT Foundations > 9. Network Basics > Flashcards

9. Network Basics Flashcards

1
Q

What is the purpose of Power over Ethernet (PoE)?

A

It allows an Ethernet connection to be used as both a network and power connection

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

Which technology allows voice data to be transmitted over a company’s computer network

A

Voice over IP (VoIP)

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

Which hardware device can connect similar networks and can separate the network traffic on each segment?

A

bridge

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

Which two details can you use to access a router’s configuration page through a web browser

A

The router’s IP address and the router name

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

Which hardware device operates at the Physical layer (Layer 1) of the Open Systems Interconnection (OSI) model to provide connectivity to network computers?

A

a hub

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

Which hardware device operates at the Data Link Layer of the Open Systems Interconnection (OSI) model to provide connectivity to network computers

A

switch

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

Which device is used to extend the range of an existing wireless network

A

wireless repeaters

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

Which devices are used to connect workstations in a 100-BaseT network

A

routers, switches, and hubs

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

Which device is the combination of a bridge and a router

A

brouter

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

Which hardware device routes data from a local area network (LAN) to a phone line or other network connection

A

router

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

How many network cards are required in each computer when internet access is shared via a router

A

one network card in each computer

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

To which port on the router or switch should you connect a computer to access the internet

A

to the local area network (LAN) port

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

What device must be isntalled in a comptuer to conenct the computer to other computers or a network

A

a network adapter

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

What does the acronym ISP denote

A

Internet Service Provider

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

DNS

A

Domain Name System

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

AP

A

Access Point

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

Which intenet connection has a line of sight requirement

A

satellite

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

Which type of wireless network interference is caused by competing wireless signals

A

radio frequency interference (RFI)

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

Which type of wireless network interference is caused by electrical devices such as fluorescent lights

A

electromagnetic interference (EMI)

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

Maximum speed limit supported by T1 line

A

1.544 Megabits per second (Mbps)

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

DSL

A

Digital Subscriber Line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Bridge

A

a device that actively works to prevent collisions by making sure not to send data to a gement that’s already busy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Digital Subscriber Line (DSL)

A

family of technologies which carry data as a separate, high-frequency signal over the same physical cables of a voice telephone or ISDN line, without interfering with the telephone service.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Hub

A

A simple network device that lets you connect multiple nodes in a star configuration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Logical network

A

A virtual representation of a network that appears to the user as an entirely separate and self-contained network even though it might physically be only a portion of a larger network or a local area network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Repeater

A

It allows a network cabling system to extened beyond its maximum allowed length and reduces distortion by amplifying or regenerating network signals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Translating Bridge

A

A device which joins segments using different link layers protocols, by translating frames from one format into the other, such as from Ethernet to Token Ring or Wi-Fi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Physical network

A

The network of interface cards, network hardware, cables, etc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Node

A

Any device on the network that actively transmits and receives information

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Host

A

A node that servers as the beginning or ending point of communication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Media

A

The physical path connecting the nodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Data

A

The information carried by the media

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Networking device

A

A node that functions as part of the network structure rather than as host or resource

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Availability

A

The ability of a network to maintain connectivity as consistently as possble, while avoiding outages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Reliablity

A

Means the network is free of communication errors : every packet of data successfully arrives at is destination with its contents intact and unaltered.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Serviceability

A

How easy it is to perform maintenance on a network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Performance

A

The network ability rapidy convey traffic

38
Q

Security

A

How hard it is for unauthorized users to access data on the network

39
Q

Scalability

A

The network’s ability to grow to meet new demands

40
Q

Compatibility

A

The ability of all of a network’s components to communicate successfully both physically and logically

41
Q

Quality of Service (QoS)

A

Overall connection quality as seen by users of the network, especially as connected to some expected baseline. This generally includes performance, reliability, and availablity.

42
Q

QoS

A

Quality of Service

43
Q

Most common network scope

A
  • LAN
  • WAN
44
Q

LAN

A

Local Area Network

45
Q

Local Area Network

A

usually confined to a fairly small area, usually within a single building

46
Q

WAN

A

Wide Area Network

47
Q

Wide Area Network (WAN)

A

extends over a very large ara, with nodes in multiple cities of countries

48
Q

PAN

A

Personal Area Network

49
Q

Personal Area Network

A
  • Covers only a very small area
  • Centimeters to a few meters across
  • Usually confined to a user’s devices, such as computer and its peripherals
50
Q

CAN

A

Campus Area Network

51
Q

Campus Area Network (CAN)

A

Used to connect multiple buildings in a single campus

52
Q

MAN

A

Metropolitan Area Network

53
Q

Metropolitan Area Network (MAN)

A
  • used to connect all or part of a city
  • intermediate in size between a LAN and a WAN
54
Q

SAN

A

Storage area network

55
Q

Storage Area Network

A

specialized type of LAN which connects computers to storage devices using network technology

not actually a scope

56
Q

Two resource-sharing models

A
  • Peer-to-peer model
  • Client-Server model
57
Q

Peer-to-peer model

A
  • No central administration
  • every host connects to the network as an equal, or peer, and can offer its own resources to the network
58
Q

Client-Server Model

A

hosts are divided into two categories: the clients that request resources and the servers that provide them.

59
Q

Two primary reference models

A
  • OSI model
  • TCP/IP model
60
Q

7 layers of the OSI layer

A
  • Layer 7: Application
  • Layer 6 : Presentation
  • Layer 5: Session
  • Layer 4: Transport
  • Layer 3: Network
  • Layer 2: Data Link
  • Layer 1: Physical
61
Q

Four Layers of the TCP/IP model

A
  • Application Layer
  • Transport Layer
  • Internet Layer
  • Network Interface Layer
62
Q

Application Layer:

A
  • Allows user level application to access the other layers
  • Doesn’t correspond directly to uer applications, but instead to the protocolos used by said applications use to communicate to the network
  • Corresponds to OSI Layers 5-7
63
Q

Transport Layer

A
  • Manages end-to-end communication betwen hosts
  • breaks application data up into the segments or datagrams sent over the network
  • exists within the OS’s protocol stack
  • Corresponds to OSI Layer 4
  • Primary protocols on this level are TCP and UDP
  • TCP is more stable
    • UDP is simpler and quicker
64
Q

Internet Layer

A
  • Controls the routing of packets across multiple logical networks
  • Coresponds to components in the protocol stack of the OS
  • Corresponds to OSI layer 3
65
Q

Network Interface Layer

A
  • Also known as the Network Access Layer or Link Layer
  • Defines how nodes communicate on the local network and adapter level
  • corresponds to the NIC on any given node
  • Corresponds to the OSI layers 1 and 2.
66
Q

Most basic devices for network infrastructure fall into three levels of sophistication

A
  1. Repeaters and hubs
  2. Bridges and switches
  3. Routers and gateways
67
Q

Repeaters

A

device made to enable connections over longer distances.

68
Q

Hub

A

A simple network device that lets you connect multiple nodes in a store configuration.

Passive hub and active hub

69
Q

Active or repeater hub

A

whenever it received a signal on one port, it regenerates it and broadcasts on all the others (more or less a repeater with more ports)

70
Q

passive hub

A

Functionally just splits the cable in multiple directions

71
Q

Bridge

A

similar to a repeater except instead of blinding regenerating signals and passing it on, it actively works to prevent collections by making sure not to send data to a segment that’s already busy.

72
Q

translating bridges

A
  • Can join two network segments of different types
  • Can even join segements using different link layer protocols
73
Q

Switches

A

A bridge with four or more ports

74
Q

multilayer switches

A

capable of examining frame payloads to understand them on the internet layer or even higher to the application layer

75
Q

Routers

A
  • Sits at the boundaries within the large network and separate it into smaller networks called subnets
  • The can read packets on the internet layer to view their IP addresses and can communicate with other routers to find the best path through the network to any give host or subnet.
  • Works like a bridge or switch, but since it operates on the interney layer it tracks logical addresses and subnets.
76
Q

Intrusion Detection System (IDS)

A

passive monitoring systems designed to alert administrators when something suspicious happens, but take no action on their own

77
Q

Intrusion Prevention Systems (IPS)

A

active protection systems which can block traffic, disconnect users, or take other corrective actions against an attack

78
Q

VPN

A

virtual private network

79
Q

Dialup Speed

A

< 56Kbps

80
Q

ISDN speed

A

64-128Kbps

81
Q

DSL speed

A

128Kbps-100Mbps

82
Q

Broadband cable

A

384Kbps-400Mbps

83
Q

Fiber-optic speed

A

up to 1Gbps

84
Q

ISDN

A

Integrated Services for Digital Network

85
Q

ISDN types

A
  • Basic Rate Interface (BRI): the most common ISDN type.
    • gross data rate of 144kbps
    • consists of two 64kbps bearer channels for user data and one 16kbps delta channel for control
  • Primary Rate Interface (PRI)
    • connects directly to the digital carrier lines
    • more bearer channels and a larger delta channel
    • Typically uses T-1 carrieirs with a 1.544Mbps gross bit rate and 23 B channels (in the US and Japan)
    • Typically uses E-1 carriers with 2.048 Mbps data rate and 30B channels
86
Q

DOCSIS

A

Data Over Cable Service Interface Specification

87
Q

Approaches to Fiber Optic connections

A
  • Fiber to the Neighborhood (FTTN)
  • Fiber to the Curb (FTTC)
  • Fiber to the premises (FTTP)
    • Conists of Fiber to the Home (FTTH)
    • or Fiber to the Building (FTTB)
88
Q

Cellular network generations

A
  • 1G: Original analog cellular network used from the early 1980s to the early 1990s
  • 2G: Early digital ceullar networks ued in the 1990s and early 2000s. Available speeds under 50kbps

​2.5G-2.9G: Marketing terms for 2G services desiged for faster and more efficient data operations while 3G was establishing. Faster variants, Enhanced Data rates for GSM Evolution (EDGE)

3G: Standard complied with IMT2000 created by ITU. Speeds of at least 200kbps

4G LTE: Long Term Evolution Supports vocie and data using TCP/IP protocols and can reach data speeds of 1Gbps down and 500 Bbps upstream. Many networks fall back to 3G network for voice calls

5G: Supports speeds of 20Gbps.

89
Q

Two ceullar radio technologies

A
  • GSM
  • CDMA
90
Q

GSM

A

Global System for Mobiles

More popular standard worldwide

used more open standards, requiring interoperability between carriers

91
Q

CDMA

A

Code Division Multiple Access

More proprietary system

Initially it had higher perforamnce but also higher licensing fees

92
Q
A

IT Foundations (18 decks)

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