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IT Fundamentals > Chapter 8 > Flashcards

Chapter 8 Flashcards

Networking Concepts and Technology

1
Q

What does SOHO stand for

A

Small office home office

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2
Q

What are the 2 major buckets that connecting devices fall under

A

Wired and wireless

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3
Q

What are the two categories of internet connection?

A

Dial up

Broadband

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4
Q

Give one of the oldest ways of communicating with ISPs

A

Through dial up connection

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5
Q

Why not use Dial up

A

Slow because of limitations to download 53 Kbps

Variety of broadband options

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6
Q

What kind of modems does Dial up use

A

Operate over regular phone lines

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7
Q

Why do you believe dial up is still being used?

A

Because high speed access is not available

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8
Q

Advantages of POTS

A

1 Easy to configure
2 Cheapest online solution
3 Only hardware require modem and telephone line
4 you can use it wherever there is a phone line

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9
Q

What is DSL

A

Digital Subscriber Line

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10
Q

What do you need to use a DSL

A

DSL modem
Network card
Network cable with RJ45 connector
Phone cord

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11
Q 
Select what is needed to use a DSL
() DSL modem
() RJ11 connector
() RJ45 connector
() Phone cord
() Phone outlet
() Wireless internet
A

All except Wireless internet

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12
Q

What can you do to allow multiple devices to use your DSL

A

Plug computer into a router instead of directly into the DSL modem and then plug the router into the DSL

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13
Q

List the different forms of DSL

A 
HDSL high bit DSL
VHDSL very high bit DSK
RADSL Rate adaptive digital subscriber line
SDSL Symmetric DSL
ADSL Asymmetric DSL
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14
Q

What is the most popular in home form of DSL

A

ADSL

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15
Q

Why can ADSL and voice communication work at the same time?

A

Because they use different frequencies on the same wire

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16
Q

Advantages of DSL

A

Much faster than dial up
Bandwidth is not shared with other users
More reliable

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17
Q

Disadvantages of a DSL

A

May not be available in your area
Needs more hardware than Dial up
Cost more
May not work in older buildings or homes

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18
Q

List hardware needed for DSL

A 
Network card
Network cable
DSL modem
Phone cord
Line filter
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19
Q

What are cable modems

A

Provide high speed internet access through cable service

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20
Q

What is DOCSIS

A

Data over cable service internet specification

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21
Q

List the advantages of cable

A

Faster
No telephone lines needed
Requires more hardware than dial up
Very reliable

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22
Q

List disadvantages of cable

A
  1. Cable may not be available in a area
  2. Cable requires more hardware than Dial-up
  3. Your bandwidth is shared with everyone on your network segment
  4. Cost is higher
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23
Q

How can cable modems be connected

A

Directly to a computer
To a router
A wireless router

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24
Q

Give advantage of Fibre optic internet

A

Fast

Reliable

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25
Q

Give a disadvantage of Fibre optic internet

A

Availability

Price

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26
Q

Explain line of sight wireless

A

Requires a clear line of sight between the receiver and the transmitter

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27
Q

Give another word for delay with regards to satellite

A

Latency

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28
Q

List disadvantages of satellites

A

Super slow connections
Delay
Tricky installation

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29
Q

Advantages of satellite

A

1- Useful when u r in an area where it’s difficult or impossible to run a cable

2-one satellite can provide a signal to a number of receivers simultaneously called point-to-multipoint connection

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30
Q

Is GSM and CDMA compatible

A

No. Not for 3G technology

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31
Q 
MiFi is used in which of these external network connection?
Dial up
DSL
Cable
Fibre optic internet
Satellite
Cellular
Radio Frequency
A

Cellular

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32
Q

Provide the internet connection type and speed

A 
Dial up-up to 55 Kbps
Cellular-up to 20 Mbps
RF-up to 20Mbps
Satellite-25 Mbps
dsl-30 Mbps
Cable-50mbps
Fibre optic-1gbps
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33
Q

What are the 2 choices for internal Network connection

A

Wired

Wireless

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34
Q

Which is faster and more secure. Wired or wireless?

A

Wired

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35
Q

What does UTP stand for

A

Unshielded twisted pair

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36
Q

When choosing a wired network connection you need to think about the following

A

Speed
Distance
Cost

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37
Q

Which company makes Bluetooth

A

Bluetooth

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38
Q

What is the least popular broadband connection in use today

A

Radio Frequency broadband access

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39
Q

Which internet connection type is the slowest?

A

Dial up

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40
Q

Which 2 internet connection type are good for rural areas

A

Radio Frequency and satellite

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41
Q

Which internet connection type is very fast and expensive

A

Fibre optic

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42
Q

Which internet connection type uses analog phone lines

A

Dial up POT

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43
Q

List the 7 internet connection types

A 
Dial up POT
Cellular
Radio Frequency
Satellite
DSL
Cable
Fibre optic
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44
Q

Your choice of internal connections can be lumped into 2 groups. What are they?

A

Wired

Wireless

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45
Q

Which is faster and more secure, wired or wireless networks?

A

Wired

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46
Q

What is Ethernet?

A

A standard for wired computer network communications which specifies that only one computer can talk on the network at one time

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47
Q

What technology does WLAN use

A

IEEE 802.11

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48
Q

What is the order of the types of IEEE 802.11?

A

a, b, g, n, ac

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49
Q

Which of the 802.11 standard type is the fastest

A

ac

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50
Q

Which of the 802.11 standard type is the slowest

A

b

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51
Q

Which of the 802.11 standard type is backward compatible with b

A

g

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52
Q

Which of the 802.11 standard type use the range that many other devices use?

A

b

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53
Q

Which of the 802.11 standard type use MIMO

A

n

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54
Q

Which 3 of the 802.11 standard type have a 2.4 GHz frequency

A

b, g, n

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55
Q

Which wireless device was designed to be a PAN

A

Bluetooth

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56
Q

What does PAN represent

A

Personal area network

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57
Q

Which network is formed on an adhoc basis

A

Bluetooth

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58
Q

What is a piconet

A

A very small network

59
Q

What is the maximum number of devices that a Bluetooth enable device can communicate with on one piconet?

A

7

60
Q

Give an example of an infrared device

A

Tv

61
Q

Which device uses walk up point to point technology

A

Infrared

62
Q

How is a modem used

A

Used to connect to a network via telephone lines

Convert digital to analog

63
Q

What is a switch

A

The network connectivity device at the center of most networks

64
Q

What is the the difference between switches and hubs

A

Switches examine the header of the incoming data packet and forward it properly.
Hubs pass on all traffic

65
Q

What’s similar about hubs and switches

A

Pass data packets

Have one or more status light indicators

66
Q

What is an access point

A

Any point that allows a user into a network

67
Q

Can wireless access points connect to other wireless access points or wireless routers

A

Yes

68
Q

Which network device is highly intelligent

A

Router

69
Q

Which network device can connect multiple network types to each other?

A

Router

70
Q

What are the differences between s router and a switch?

A

1-Router are much more advanced
2-swirches use Mac addresses to direct traffic, routers use IP addresses
3-Routers can connect more devices than switches

71
Q

What is the difference between IP addresses and MAC addresses

A

IP addresses will change Mac addresses is the number on the NIC card and it doesn’t change.

72
Q

True or false

All connections lead back to wired ones at some point.

A

True

73
Q

What are firewalls used for

A

Filter network traffic by using ACL (Access control list)

74
Q

What are the 2 types of firewalls

A

Network based

Host based

75
Q

How is a DMZ formed

A

When network based firewalls create a space between 2 firewalls where there is no protection

76
Q

Which is usually confined to one office or building?

A

LAN

77
Q

Which wireless network connection configuration spread multiple geographical areas

A

WLAN

78
Q

What allows multiple devices to connect?

A

Switch

79
Q

What allows multiple networks to connect?

A

Router

80
Q

What is Network protocol?

A

The language that computers speak

81
Q

What does TCP/IP

A

Transmission Control Protocol/ Internet Protocol

82
Q

What is a host?

A

A device with an IP address

83
Q

Jan has a device that she cannot assign an IP address. Is this device a host

A

No

84
Q

What is an octlet

A

8 bits

85
Q

Are ip address flat or hierarchical?

A

Hierarchical

86
Q

What are the 2 IDs that make up IP addresses?

A

Network ID and host ID

87
Q

Which is always first in an IP address?

A

The network id

88
Q

What follows the network id in the IP address

A

Host id

89
Q

Does the network id have to be a specific length?

A

No

90
Q

Should the network id be set to all zeroes?

A

No

91
Q

What does 0 represent in the host id

A

This network

92
Q

What does a host of of all 1s means

A

All host on this network

93
Q

What is a broadcast address

A

When the host is is set to all 1s

94
Q

What are subnet masks

A

This is a value that helps a computer to differentiate where a network is ends and a host address begins

95
Q

What is the default gateway?

A

The door from your network to the outside world.

96
Q

What happens if the destination is on a different network?

A

The router comes into play

97
Q

List the 2 critical TCP/IP services.

A

DHCP

DNS

98
Q

What does TCP/IP mean?

A

Transmission Control Protocol/ Internet Protocol

99
Q

What does the DHCP service do?

A

1 - Assigns the IO address and subnet mask

2 - recognize the default gateway and DNS server address

100
Q

What is the function of the DSN?

A

Takes the IP address when you enter a website and allows you to connect to it

101
Q

What is the alternative to DHCP?

A

The administrator enters the IP address configuration info manually on each host. This is called static IP address.

102
Q

What is the one function of the DNS?

A

To resolve host name to IP address

103
Q

What configuration info does the DHCP server provide?

A

IP address
Subnet mask
Default gateway
DNS server address

104
Q

What does APIPA stand for

A

Automatic Private IP Address

105
Q

What is APIPA used for?

A

A TCP/IP standard used to configure IP base host automatically that are unable to reach the DHCP server

106
Q

What is the IP address range used by the APIPA?

A

169.254.0.0

107
Q

When you see 169 254.0.0 what is happening with the IP address?

A

It has configured itself and will not be able to get on to the internet.

108
Q

If your IP address cannot get to the DHCP what will happen?

A

The DHCP will give you an APIPA

109
Q

What are the commands used by Windows and Mac to show the configuration info of your computer?

A

Ipconfig

Ifconfig -mac

110
Q

What is the default gateway

A

The router

111
Q

Is a subnet mask of 255.255.254.0 possible?

A

Yes

112
Q

192.168.1.142

Identify the network id and the host id

A

192.168.1 - network id

142 - host id

113
Q

What command should be used at the command prompt to show more information including the address of your DHCP and DNS

A

ipconfig /all

114
Q

What does”not routable on the network” means?

A

Will not work on the network.

115
Q

What does the command tracery does?

A

Traces the router

116
Q

What is the purpose of the NAT?

A

Converts private IP addresses to public addresses

117
Q

Is the NAT a translator?

A

Yes

118
Q

What are the 2 network storage options?

A

Local network storage

Cloud storage

119
Q

Give 2 local network storage types

A

File server

NAS (network attached storage)

120
Q

What is a file server?

A

Server specialized to store user files. It is a dedicated server.

121
Q

What is like a personal cloud?

A

NAS

122
Q

What is RAID?

A

Redundant Array of Independent Disk

123
Q

Which device acts like it’s own server?

A

NAS network attached storage

124
Q

What is a file server?

A

A server that is specialized to store user files

125
Q

What is like a personal cloud

A

NAS

126
Q

What device has it’s own operating system and acts like it’s own file server

A

NAS

127
Q

List the cloud providers

A 
Dropbox 
Box
Apple iCloud
Microsoft One Drive
Google Drive
128
Q

Which of the cloud providers have more space?

A

Google Drive

129
Q

Which of the cloud providers has the least space?

A

Dropbox

130
Q

What are the steps to set up a wireless network

A

1 change the routers SSID
2 change the administrator username and password (for the router)
3 enable WPA2 personal with AES encryption
4 choose a high quality security pass phrase - to be used by guests
5 from the client side select WPA2 and enter the passphrase

131
Q

Where would you find captive portal features

A

On open portals

132
Q

Which is more secure
WEP
WPA
WPA 2

A

WPA 2

133
Q

What does the QoS do?

A

Decides who gets to use what resource

134
Q

What are the 3 types of storage?

A

File server
NAS
Cloud

135
Q

What are the 5 key network protocol?

A 
HTTP
HTTPS
POP3 used to retrieve emails
IMAP. ".       """""""""""""
SMTP used to send emails
136
Q

What is the wireless network service name?

A

SSID

137
Q

What along with a router connects you to the network?

A

Access point

138
Q

With an access point alone you cannot get into the internet true or false

A

True

139
Q

What allows you to get out of the internet?

A

Proxy

140
Q

What does the proxy do?

A

Allows you to get out of the intranet.

141
Q

An employee is using a desk phone that is connected only via a network cable. Which of the following technologies is the phone using?

A

VOIP

142
Q

What does a proxy do?

A

Allows you to get out of the Intranet

143
Q

Can you go onto the internet with an Access Point only?

A

No

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