week 6

Question 1

Network media

Answer 1

used to connect the computers.

Question 2

A network interface

Answer 2

installed in each computer to connect it to the network media.

Question 3

Coaxial Cable:

Answer 3

transition a network through its inner wire The wire is made up of four different components

Question 4

Twisted Pair Cable:

Answer 4

it is a unique eight plastic-coated copper wires that
are twisted into four pairs.

Question 5

Wireless Internet Services

Answer 5

Microwave Satellite
Cellular radio
Radio Frequency

Question 6

There are three types of wireless adapters

Answer 6

PCI (Peripheral Component Interconnect)
USB (Universal Serial Bus)
Internal adapters

Question 7

Network Categories

Answer 7

private
public
LAN
MAN
WAN

Question 8

private network

Answer 8

can be accessed only by computers inside the network

Question 9

Public network

Answer 9

can be accessed freely by anybody

Question 10

Local Area
Network (LAN)

Answer 10

a network of connected devices localized in a single physical location, such as in a single office building, private residence.

Question 11

Metropolitan Area Network (MAN)

Answer 11

Is a kind of network that covers a larger geographical area than a LAN, but isn’t usually as large as a WAN.

Question 12

Wide Area
Network (WAN)

Answer 12

it connects multiple LANs to create a much larger network.

Question 13

IP Addresses

Answer 13

The format for an IP address is four numbers between 0 and 255, separated by periods (e.g., 192.168.1.1).

Can be represented in one of two ways:
Decimal
binary

Question 14

Networking devices

Answer 14

Modem(translate signals to 1,0)
router(send signals from one to another)
switch(transfer data devices within the network(wires))
access point(forwards the data to where it need to go(wireless))
firewall(check each packet that tries to enter the computer)
home router

Question 15

Virtual LAN (VLAN)

Answer 15

logical grouping of computers based on a switch port.

Question 16

subnet

Answer 16

sits between the private network and an
untrusted network, such as the internet.

Question 17

Types of encryption in a Wi-Fi network

Answer 17

Wired Equivalent Privacy (WEP)
Wi-Fi Protected Access (WPA)
WPA2(stronger)

Question 18

Interference:

Answer 18

Interference is caused by devices that are operating in the same frequency as the wireless network.

Question 19

Attenuation:

Answer 19

It is the loss of signal strength in networking cables or connections. It is measured in decibels (dB).

Question 20

Subnetting:

Answer 20

Dividing a network into smaller subnets.

Question 21

RFID
two types of RFID,

Answer 21

for tracking objects.
1-passive (does not require power)
2-active (does require power).

Question 22

Peer-to-Peer

Answer 22

Computers can be both server and client at the same time.

Question 23

Wi-Fi:

Answer 23

A technology that uses radio signals to connect a device to an access point.

Question 24

Virtual Private Networks (VPN):

Answer 24

A tool that allows internet users more security and privacy

Question 25

internet services types

Answer 25

Cable Modem
Satellite
Cellular
Wi-Fi

Question 26

Transmission Control Protocol (TCP):

Answer 26

enables two hosts to establish a connection and exchange data.

Question 27

User Datagram Protocol (UDP):

Answer 27

when speed in transmission is more important than accuracy

Question 28

Domain Name System (DNS):

Answer 28

human-readable hostname instead of numeric IP addresses.

Question 29

Hypertext Transfer Protocol Secure (HTTPS):

Answer 29

securely transfer web content between computers.

Question 30

Simple Mail Transfer Protocol (SMTP):

Answer 30

A protocol used to send email.

Question 31

Post Office Protocol 3 (POP3):

Answer 31

used to receive email. With POP3, email is deleted from a server after it is downloaded to a client.

Question 32

Internet Message Access Protocol (IMAP)

Answer 32

A protocol used to receive email. With IMAP, email is saved on a server even after it is downloaded to a client.

Question 33

HTTP Method:

Answer 33

tells the server what the user wants to do.

Question 34

Dynamic Host Configuration Protocol (DHCP):

Answer 34

A network management protocol that assigns IP
addresses on a network.

Question 35

Subnet Mask:

Answer 35

tells a computer which numbers are part of the network or subnet address and which are part of the host address.

Question 36

Application Layer

Answer 36

high-level protocols and enables
network services.

Question 37

Transport Layer

Answer 37

is responsible for error checking and reliable delivery.

Question 38

Internet Layer

Answer 38

responsible for forwarding packets through multiple networks.

Question 39

Link Layer

Answer 39

responsible for describing the physical layout of the network and how messages are electrically transmitted.

Question 40

Secure Socket Layer (SSL)

Answer 40

an encryption technology used by secured (https://) websites.