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AS CIE 3. Communication

Total questions: 131

Worksheet time: 1hrs 5mins

Name
Class
Date
1.
Internet
a)
a network of computers which are connected and that share information and allow communication around the world
b)
 a hardware device that lets other Wi-Fi devices to connect to a wired network, the white square box on the classroom ceiling
c)
a computer that provides resources, data, services, or programs to other computers, known as clients, over a network
d)
hardware that is a smart, central, multi-plug adaptor for computers and printers in a network, it reduces network traffic and increases speed
e)
2.
World Wide Web
a)
A collection of web pages that are stored on computers all over the world<br /><br />over the world
b)
a network of computers which are connected and that share information and allow communication around the world
c)
 a hardware device that lets other Wi-Fi devices to connect to a wired network, the white square box on the classroom ceiling
d)
a computer that provides resources, data, services, or programs to other computers, known as clients, over a network
3.
Uniform Resource Locator (URL)
a)
Uniform Resource Locator, it is a web address and is unique
b)
A collection of web pages that are stored on computers all over the world<br /><br />over the world
c)
a network of computers which are connected and that share information and allow communication around the world
d)
 a hardware device that lets other Wi-Fi devices to connect to a wired network, the white square box on the classroom ceiling
4.
Domain Name
a)
the letters and numbers that form a website address, for example www.bbc.co.uk
b)
Uniform Resource Locator, it is a web address and is unique
c)
A collection of web pages that are stored on computers all over the world<br /><br />over the world
d)
a network of computers which are connected and that share information and allow communication around the world
5.
Hypertext Transfer Protocol
a)
HTTP defines the rules used by web browsers and servers to exchange information
b)
the letters and numbers that form a website address, for example www.bbc.co.uk
c)
Uniform Resource Locator, it is a web address and is unique
d)
A collection of web pages that are stored on computers all over the world<br /><br />over the world
6.
Data Packets
a)
The name for the smaller chunks or packets that data is broken down into to be sent over the Internet
b)
HTTP defines the rules used by web browsers and servers to exchange information
c)
the letters and numbers that form a website address, for example www.bbc.co.uk
d)
Uniform Resource Locator, it is a web address and is unique
7.
Domain Name System
a)
The DNS is a way of translating a number based Internet address into word like address eg "rs.internic.net" is also known as "198.41.0.13".
b)
The name for the smaller chunks or packets that data is broken down into to be sent over the Internet
c)
HTTP defines the rules used by web browsers and servers to exchange information
d)
the letters and numbers that form a website address, for example www.bbc.co.uk
8.
Network
a)
computers and devices joined together
b)
The DNS is a way of translating a number based Internet address into word like address eg "rs.internic.net" is also known as "198.41.0.13".
c)
The name for the smaller chunks or packets that data is broken down into to be sent over the Internet
d)
HTTP defines the rules used by web browsers and servers to exchange information
9.
Network Interface Card (NIC)
a)
is a piece of computer hardware that lets a computer connect to a network. It can be wired (the plug for the yellow cable on the school computers) or wireless.
b)
computers and devices joined together
c)
The DNS is a way of translating a number based Internet address into word like address eg "rs.internic.net" is also known as "198.41.0.13".
d)
The name for the smaller chunks or packets that data is broken down into to be sent over the Internet
10.
Media Access Control (MAC) Address
a)
a hardware id number that uniquely identifies each device. It is manufactured into every network card (NIC) and therefore cannot be changed.
b)
is a piece of computer hardware that lets a computer connect to a network. It can be wired (the plug for the yellow cable on the school computers) or wireless.
c)
computers and devices joined together
d)
The DNS is a way of translating a number based Internet address into word like address eg "rs.internic.net" is also known as "198.41.0.13".
11.
Internet Protocol (IP) Address
a)
a number that is given to each computer when it is connected to the internet
b)
a hardware id number that uniquely identifies each device. It is manufactured into every network card (NIC) and therefore cannot be changed.
c)
is a piece of computer hardware that lets a computer connect to a network. It can be wired (the plug for the yellow cable on the school computers) or wireless.
d)
computers and devices joined together
12.
Bandwidth
a)
a measurement of the amount of data that can be sent between computers at one time
b)
a number that is given to each computer when it is connected to the internet
c)
a hardware id number that uniquely identifies each device. It is manufactured into every network card (NIC) and therefore cannot be changed.
d)
is a piece of computer hardware that lets a computer connect to a network. It can be wired (the plug for the yellow cable on the school computers) or wireless.
13.
Upload
a)
to copy or move programs or information to a larger computer system or to the internet
b)
a measurement of the amount of data that can be sent between computers at one time
c)
a number that is given to each computer when it is connected to the internet
d)
a hardware id number that uniquely identifies each device. It is manufactured into every network card (NIC) and therefore cannot be changed.
14.
Download
a)
to copy or move programs or information into a computer's memory, especially from the internet or a larger computer
b)
to copy or move programs or information to a larger computer system or to the internet
c)
a measurement of the amount of data that can be sent between computers at one time
d)
a number that is given to each computer when it is connected to the internet
15.
Buffering
a)
when the computer stores some of a file in a temporary "buffer" until it can begin playing the whole thing.
b)
to copy or move programs or information into a computer's memory, especially from the internet or a larger computer
c)
to copy or move programs or information to a larger computer system or to the internet
d)
a measurement of the amount of data that can be sent between computers at one time
16.
Wide Area Network (WAN)
a)
a computer network that covers a large geographical area. It uses cables, telephone wires, satellites and radio waves to connect. The Internet, Maybanks ATM's are examples of a WAN.
b)
when the computer stores some of a file in a temporary "buffer" until it can begin playing the whole thing.
c)
to copy or move programs or information into a computer's memory, especially from the internet or a larger computer
d)
to copy or move programs or information to a larger computer system or to the internet
17.
Local Area Network (LAN)
a)
a computer network that covers a small area, mostly, a LAN is within a building or group of buildings. It uses cables and radio waves to connect. Our school is a LAN.
b)
a computer network that covers a large geographical area. It uses cables, telephone wires, satellites and radio waves to connect. The Internet, Maybanks ATM's are examples of a WAN.
c)
when the computer stores some of a file in a temporary "buffer" until it can begin playing the whole thing.
d)
to copy or move programs or information into a computer's memory, especially from the internet or a larger computer
18.
Router
a)
hardware that is like a "Traffic policeman" for data packets, it sends them on their way in the best direction
b)
how the computers, or devices within the network are arranged and connected to each other. Some common network topologies include star, ring, and bus.
c)
a computer network that covers a small area, mostly, a LAN is within a building or group of buildings. It uses cables and radio waves to connect. Our school is a LAN.
d)
a computer network that covers a large geographical area. It uses cables, telephone wires, satellites and radio waves to connect. The Internet, Maybanks ATM's are examples of a WAN.
19.
Switch
a)
hardware that is a smart, central, multi-plug adaptor for computers and printers in a network, it reduces network traffic and increases speed
b)
hardware that is like a "Traffic policeman" for data packets, it sends them on their way in the best direction
c)
how the computers, or devices within the network are arranged and connected to each other. Some common network topologies include star, ring, and bus.
d)
a computer network that covers a small area, mostly, a LAN is within a building or group of buildings. It uses cables and radio waves to connect. Our school is a LAN.
20.
Wireless Access Point
a)
 a hardware device that lets other Wi-Fi devices to connect to a wired network, the white square box on the classroom ceiling
b)
a computer that provides resources, data, services, or programs to other computers, known as clients, over a network
c)
hardware that is a smart, central, multi-plug adaptor for computers and printers in a network, it reduces network traffic and increases speed
d)
hardware that is like a "Traffic policeman" for data packets, it sends them on their way in the best direction
21.
intranet
a)
a private network that can only be accessed by authorized users, especially a private network, created using World Wide Web software.
b)
is a website that brings people together to talk, share ideas and interests, or make new friends. This type of collaboration and sharing is known as social media.
c)
is a website that allows the site visitors to add and edit content. Generally, site visitors use their browser to edit text without requiring HTML code
d)
is a Web page that serves as a publicly accessible personal journal for an individual. Typically updated daily,they often reflect the personality of the author.
22.
HTTPS
a)
it enables encrypted communication and secure connection over the internet, it adds a layer of security on the data in transit through a secure socket layer (SSL) or transport layer security (TLS). Examples are banks & most websites that require you to log in.
b)
a private network that can only be accessed by authorized users, especially a private network, created using World Wide Web software.
c)
is a website that brings people together to talk, share ideas and interests, or make new friends. This type of collaboration and sharing is known as social media.
d)
is a website that allows the site visitors to add and edit content. Generally, site visitors use their browser to edit text without requiring HTML code
23.
hyperlink
a)
 is an icon, graphic, or text that when clicked or tapped links to another file or object (text, image, movie etc).
b)
it enables encrypted communication and secure connection over the internet, it adds a layer of security on the data in transit through a secure socket layer (SSL) or transport layer security (TLS). Examples are banks & most websites that require you to log in.
c)
a private network that can only be accessed by authorized users, especially a private network, created using World Wide Web software.
d)
is a website that brings people together to talk, share ideas and interests, or make new friends. This type of collaboration and sharing is known as social media.
24.
FTP
a)
is a standard Internet protocol for transmitting files between computers on the Internet. a "client" (computer) will ask for a file, and a local or remote server will provide it.
b)
 is an icon, graphic, or text that when clicked or tapped links to another file or object (text, image, movie etc).
c)
it enables encrypted communication and secure connection over the internet, it adds a layer of security on the data in transit through a secure socket layer (SSL) or transport layer security (TLS). Examples are banks & most websites that require you to log in.
d)
a private network that can only be accessed by authorized users, especially a private network, created using World Wide Web software.
25.
web browser
a)
is an application used to access and view websites
b)
is a standard Internet protocol for transmitting files between computers on the Internet. a "client" (computer) will ask for a file, and a local or remote server will provide it.
c)
 is an icon, graphic, or text that when clicked or tapped links to another file or object (text, image, movie etc).
d)
it enables encrypted communication and secure connection over the internet, it adds a layer of security on the data in transit through a secure socket layer (SSL) or transport layer security (TLS). Examples are banks & most websites that require you to log in.
26.
search engine
a)
a program that searches for and identifies items in a database that correspond to keywords or characters specified by the user, used especially for finding particular sites on the World Wide Web
b)
is an application used to access and view websites
c)
is a standard Internet protocol for transmitting files between computers on the Internet. a "client" (computer) will ask for a file, and a local or remote server will provide it.
d)
 is an icon, graphic, or text that when clicked or tapped links to another file or object (text, image, movie etc).
27.

A stand alone computer cannot connect to the Internet or any other computer.

a)

true

b)

false

28.

Which of the following does a computer need to connect to a network or other computer devices?

a)

ethernet card

b)

NIC card

c)

IP Address

d)

WiFi

29.

Which of the following statements are true?

a)

Local Area Networks cover a small geographical area whereas a Wide Area Network covers a large geographical

b)

Local Area Networks cover a single site such as a school whereas a Wide Area Network can cover several sites

c)

Local Area Networks are made from a single network whereas a Wide Area Network is made up of several LANs

30.

Which of the following best describes cloud storage?

a)

Cloud storage is free and means you store data online.

b)

Cloud storage can be free or paid for and means you store data online

c)

Cloud storage can be free or a paid for service where you copy data to an online account.

31.

Which of the following are advantages of cloud storage?

a)

It requires an internet connection, services can be free, can access from any internet connected device.

b)

Cloud providers control your data, services can be free, can share, edit and save files online.

c)

Can access with any internet enabled device, can share, edit and save files online, provider handles security.

32.
a)

private

b)

public

c)

hybrid

33.

a)

public

b)

private

c)

hybrid

34.

Cloud services refers to

a)

applications, storage, calendars and email

b)

applications, storage, backups, and free upgrades

c)

computer data that is stored on the internet

d)

application, storage and services such as synchronisation with desktop applications

35.

A web host is in the business of....

a)

proving web services and file management for webs sites

b)

providing server space and file management for web sites

c)

providing server space, webs services and file maintenance for web sites.

36.
Disadvantages of networks ? 
a)
Share files 
b)
Viruses 
c)
Share Internet 
d)
Roaming 
37.
Which network is this? I allow computers to communicate with each other in the same building
a)
WAN
b)
LAN
38.
Which network is this? I allow computers to communicate with each other in across the world
a)
LAN
b)
WAN
39.

Group of devices connected with one an other

a)

Network

b)

Computer

c)

printer

40.

Hardware component which are connected to the computer is -----------------

a)

Peripheral

b)

ports

c)

Protocol

41.

the data transfer via the modem is measured in -------per second

a)

gigabyte

b)

bits

c)

bytes

42.

spans a large geographic area, such as a state, province or country. WANs often connect multiple smaller networks, such as local area networks (LANs) or metro area networks (MANs).

a)

LAN (Local Area Network)

b)

MAN (Metropolitan Area Network)

c)

PAN (Personal Area Network)

d)

WAN (Wide Area Network)

43.

supplies networking capability to a group of computers in close proximity to each other such as in an office building, a school, or a home

a)

LAN (Local Area Network)

b)

MAN (Metropolitan Area Network)

c)

WAN (Wide Area Network)

d)

PAN (Personal Area Network)

44.

network designed for a town or city

a)

LAN (Local Area Network)

b)

MAN (Metropolitan Area Network)

c)

WAN (Wide Area Network)

d)

PAN (Personal Area Network)

45.

The physical topology of a network refers to the layout of cables, computers and other peripherals.

a)

Network topology

b)

Physical Topology

c)

Logical Topologies

46.

What is Networking?

a)

Networking is consists of two or more computers.

b)

Networking is a business that you need if you want to be rich.

c)

Networking is all about business.

47.

the study of the arrangement or mapping of the elements (links, nodes) of a network, especially the physical (real) and logical (virtual) interconnections between nodes.

a)

Network topology

b)

Physical Topology

c)

Logical Topologies

48.

one of the most common network topologies found in most offices and home networks.

a)

STAR TOPOLOGY

b)

RING TOPOLOGY

c)

BUS TOPOLOGY

49.

all workstations are connecting directly to the main backbone that carries the data.

a)

BUS TOPOLOGY

b)

RING TOPOLOGY

c)

STAR TOPOLOGY

50.

a device used to connect a single computer or router to a DSL phone line, in order to use an ADSL service.

a)

DSL modem

b)

Cable modem

c)

router

51.

type of modem that provides bi-directional data communication via radio frequency channels on a cable television (CATV) infrastructure.

a)

Cable modem

b)

DSL modem

c)

router

52.

two or more topologies are combined to form a complete network.

a)

TREE / HYBRID TOPOLOGY

b)

MESH TOPOLOGY

c)

STAR TOPOLOGY

53.

a small hardware device that joins multiple computers together within one local area network (LAN).

a)

Network Switch

b)

Network Hub

c)

Router

54.

the number assigned to a network equipped piece of hardware by which other device identify it.

a)

IP Address

b)

Router

c)

TCP/IP

55.

a networking device whose software and hardware are usually tailored to the tasks of routing and forwarding information.

a)

Router

b)

Modem

c)

Hub

d)

Spaceship

56.
Which of the following is not an advantage of networking?
a)
Security from viruses and unauthorised access.
b)
Ability to share files and printers
c)
Ability to move the same user account between different computers
d)
Obtaining site license software at reduced cost compared to buying multiple copies.
57.
The following is needed to get on the Internet:
a)
Networking of computers.
b)
A modem for every computer.
c)
Administrative accounts.
d)
Large storage capacity.
58.
Collaborative working is very popular today and is made possible by networking.
a)
True
b)
False
59.
Upgrading software is easier to do over the network.
a)
True
b)
False
60.

The amount of data that can be transferred over a network in a certain amount of time.

a)

Bandwidth

b)

Node

c)

FTP

d)

NOS

61.

A computer, peripheral or other device connected to a network.

a)

Switch

b)

Router

c)

LAN

d)

Node

62.

A cable made up of glass fibers that transmit data extremely fast.

a)

Coaxial

b)

Fiber optic

c)

Ethernet

d)

Cat-6

63.

Device that transfers packets of data between two or more networks.

a)

Router

b)

Switch

c)

Firewall

d)

Node

64.

Allows for transfer of data between devices over short distances through radio waves.

a)

NOS

b)

Router

c)

Bluetooth

d)

Switch

65.

A device that acts like a traffic signal on a network.

a)

Node

b)

FTP

c)

Wireless Adapter

d)

Switch

66.

Cable made up of a single copper wire used for cable TV.

a)

Ethernet

b)

Fiber optic

c)

Coaxial

d)

Cat-5

67.

A network in which the nodes are located within a small geographic area.

a)

MAN

b)

NOS

c)

WAN

d)

LAN

68.

A network that uses ethernet protocol as the means to which devices communicate on the network.

a)

LAN

b)

Ethernet

c)

WAN

d)

MAN

69.

A network that consists of client computers that connect to a server.

a)

client/server

b)

LAN

c)

peer-to-peer

d)

WAN

70.

When 2 or more computers are connected via software and hardware to communicate they create a ____________.

a)

router

b)

wi-fi

c)

FTP

d)

network

71.

Wireless local area network that uses radio signals to transmit data.

a)

wi-fi

b)

ethernet

c)

FTP

d)

bandwidth

72.

A collection of LANS that span a large physical distance.

a)

LAN

b)

WAN

c)

MAN

d)

PAN

73.

A network where each device can communicate directly with every other device on the network.

a)

wi-fi

b)

client/server

c)

ethernet

d)

peer-to-peer

74.

Which of these is the best definition of hacking

a)

Unauthorised access to a computer or computer network

b)

Stealing of private data such as passwords

c)

Sending email with malicious attachments

d)

Changing software to do something that was not intended

75.

Which of these is an advantage of cloud storage?

a)

The user has no control over their data

b)

Many programs can be run at the same time, regardless of the processing power of your device

c)

Accessible anywhere with an internet connection

d)

Portability

76.

Easy to share information: You can share information with colleagues and employees far more easily using the cloud.

a)

True

b)

False

77.

Hudge maintenance: When you use a cloud computing service you don’t have to worry about maintaining the system yourself.

a)

True

b)

False

78.

What is the drawback of cloud computing in education system?

a)

The need for high speed internet access

b)

The management of data and products

c)

The absence of hardware

d)

The wide connection of networks

79.

What are the uses of cloud computing?

a)

Create new apps and services, analyze data, embed intelligence, test and build applications

b)

Collecting appropriate quantitative data, helps in drawing valid inferences

c)

Input, present and compare collected data

d)

Estimate income data, indicate success or failure of planning

80.

What are the risks of cloud computing?

a)

No troubleshooting issues

b)

Full control over the data

c)

Storing data without control

d)

No government intrusion

81.
What type of network is this?
a)
Ring 
b)
Bus 
c)
Star
d)
Mesh
82.
In a star network
a)
Each device is connected to a switch or hub
b)
Each device connects to each other
c)
Each device is connected in a line
d)
Each device is connected to a terminal
83.
The internet is the worlds biggest
a)
LAN
b)
WAN
84.
What is an advantage of creating a network?
a)
It's expensive
b)
Share peripherals 
c)
Share virusses
d)
Share routers
85.
What does NIC stand for?
a)
Network Internet Card
b)
New Internet Creator
c)
Network Interface Card
d)
Network Interceptor Card
86.
What type of network is this?
a)
Mesh
b)
Star
c)
Ring
d)
Token
87.
The internet is the worlds biggest
a)
LAN
b)
WAN
88.
A terminator
a)
Makes the network quicker
b)
Sends Data Packets
c)
Stops data collisions
d)
Connects devices to the internet 
89.
What term describes the physical layout of a network?
a)
Topology
b)
topping
c)
topiology
d)
toppology
90.
A router can
a)
Forward data packets
b)
Absorb signals
c)
Repeat signals
d)
absorb data packets
91.
What are two factors that affect network performance?
a)
Traffic and bandwidth
b)
Lag and ping
c)
Banter and bants
92.
Mbps is known as...
a)
Megabits per second
b)
Megabytes per second
c)
Gigabits per second
93.
What network usage model is this?
a)
Client-Server
b)
Peer-to-peer
c)
LAN
94.
Hospitals, banks and supermarkets are all linked using which network type?
a)
WAN
b)
LAN
c)
BUS
95.
What network connection type is this?
a)
Mesh
b)
Star
c)
LAN
96.

What is the most frequently used communications protocol?

a)

IPv4

b)

IPv6

c)

IPv8

d)

IPv10

97.

What class is this IP address? 10.10.10.0

a)

A

b)

B

c)

C

d)

D

98.

What class is the following IP address? 220.10.10.35

a)

A

b)

B

c)

C

d)

D

99.

Which class of network addresses is used by government, ISPs and large universities.

a)

Class A

b)

Class B

c)

Class C

d)

Class D

100.

Which description below is a Class C network address?

a)

network. host. host.host

b)

network.network.host.host

c)

network.network.network.host

101.

Which type of address are exposed to the Internet?

a)

Public

b)

Private

102.

What type of IP addresses are manually assigned?

a)

Dynamic

b)

Static

103.

What is the default subnet mask for a Class A ip address?

a)

255.0.0.0

b)

255.255.0.0

c)

255.255.255.0

104.

Which Class of IP addresses uses the pattern shown here?

a)

Class A

b)

Class B

c)

Class C

d)

Class D

105.

Which of the following is an example of a multicast address?

a)

10.6.9.1

b)

192.168.10.6

c)

224.0.0.10

d)

172.16.9.5

106.

How many total number of hosts available in the Class C network?

a)

65536

b)

128

c)

127

d)

256

107.

which is a broadcast ip address?

a)

244.244.244.244

b)

255.255.255.255

c)

0.0.0.0

d)

127.127.127.127

108.
IPv4 addresses are
a)
32 bits wide
b)
48 bits wide
c)
4 bits wide
d)
of any size in bits
109.

The left-hand part of an IPv4 address is

a)

the Network-id

b)

the Host-id

c)

the MAC address

d)

the computer's memory size

110.

The right-hand part of an IPv4 address is

a)

the Network-id

b)

the Host-id

c)

the MAC address

d)

the identity of the computer's network card

111.
The biggest decimal number in any part of an IPv4 address is
a)
255
b)
256
c)
100
d)
1000
112.

The lowest IP address in a range is reserved for

a)

the network identity (the subnet-id)

b)

the broadcast address

c)

the MAC address

d)

the computer's IP address

113.

The highest IP address in a range is reserved for

a)

the network identity (the subnet-id)

b)

the broadcast address

c)

the MAC address

d)

the computer's IP address

114.
A /24 netmask means
a)
a set of 256 IP addresses
b)
a set of 128 IP addresses
c)
a set of 64 IP addresses
d)
a set of 32 IP addresses
115.
A /27 netmask means
a)
a set of 256 IP addresses
b)
a set of 128 IP addresses
c)
a set of 64 IP addresses
d)
a set of 32 IP addresses
116.
What is the dotted decimal netmask for a /27 network?
a)
255.255.255.0
b)
255.255.255.128
c)
255.255.255.192
d)
255.255.255.224
117.
You need to buy IP address for a network with 50 end devices. You should buy
a)
A /24 sized subnet
b)
A /25 sized subnet
c)
A /26 sized subnet
d)
A /27 sized subnet
118.

Use a default subnet mask...

a)

Classless IP Addresses

b)

Classful IP Addresses

c)

VLSM

d)

CIDR

119.

Process of dividing a large network into smaller networks...

a)

Supernetting

b)

CIDR

c)

Classful IP Addressing

d)

Subnetting

120.

Standards used to create unique identifiers for networks and host devices.

a)

Supernetting

b)

Subnetting

c)

Network ID

d)

CIDR

121.

Process used to determine the network address/ID.

a)

Adding

b)

Andding

c)

Annding

d)

ANDing

122.

32-bit number that defines which portion of an IPv4 address identifies the network address and which portion defines the host address.

a)

Octet

b)

Quartet

c)

Subnet ID

d)

Subnet Mask

123.

32-bit number that identifies the network an IPv4 address belongs to...

a)

Network ID

b)

Subnet Mask

c)

IPv6

d)

MAC Address

124.

Special server configured to pass out IP addresses and other IP configuration information to network clients. These ensure that each client is assigned a unique IP address.

a)

DNS

b)

Active Directory

c)

DCHP

d)

DHCP

125.

Addressing means that IP configuration information is manually configured on each host.

a)

DHCP

b)

DNS

c)

IPv6

d)

Static

126.
There are enough IPv4 addresses that will ever be needed
a)
False
b)
True
127.
The latest revision of IP addressing is v6.
a)
True
b)
False
128.
IP addresses can never be changed.
a)
False
b)
True
129.
Which technology allows the assignment of IP addresses?
a)
DHCP
b)
OSPF
c)
MAC
d)
DNS
130.
What does DHCP also provide in addition to IP addresses?
a)
Subnet mask.
b)
Host name.
c)
Location of the interent.
d)
Wireless passwords.
131.
What technology allows the sharing of public IP addresses across many private clients?
a)
NAT
b)
DHCP
c)
DNS
d)
HTTP

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