Chapter 5: Networking

Question 1

The 4 Protocol Layers are

Answer 1

Link Layer Ethernet
Internet Layer Internet Protocol (IP)
Transport Layer Transmission Control Protocol (TCP)
Application Layer HyperText Transfer Protocol (HTTP)

Question 2

IP address current standard protocol is

Answer 2

Internet Protocol version 6 (IPv6) which uses a 128 bit address

Question 3

allows all of the computers connected to a router to share a single, public IP address. It then assigns a private IP address to all connected computers that it translates to the public address when sending the traffic to the Internet. It also acts as a firewall, and is widely used in home networks and small businesses.

Answer 3

Network Address Translation (NAT)

Question 4

allows you to use domain names instead of actual addresses to access a computer

Answer 4

DNS (Domain Name System)

Question 5

Hub, Switch, Router

Answer 5

connects computers and the internet, if one gets a virus all do; switch - can separate communication but is still like hub; router - a computer dedicated to transfer interactions between networks

Question 6

LAN, WAN, VLAN, MAN

Answer 6

Local Area Network (LAN); Wide Area Network (WAN); virtual LANS (what NCSU uses) acts as a wan but at the local level; Metropolitan Area Network (MAN)

Question 7

What are the 4 network configurations?

Answer 7

Star Network:
computers are connected by one central device known as a concentrator. The concentrator manages and controls all functions of the network.
Tree Network:
Tree networks are collection of star networks, arranged in a hierarchy. Concentrators from each star network are connected to each other in a particular order to form the tree.
Bus Network:
a set of clients is connected using a single shared connection line known as a bus. Bus networks are the simplest way to connect devices, but problems occur when two devices want to communicate at the same time.
Ring Network:
nodes are connected in a circular configuration. Data can travel either clockwise or counterclockwise around the ring, but all data must travel in the same direction

Question 8

Name and describe the 3 wired connections in Network Media?

Answer 8

Twisted Pair Cables - susceptible to interference;
coaxial cables - blocks outside interference;
fiber optic - fastest source

Question 9

802.11 Wireless standards are

Answer 9

Standard

Frequency (Ghz)

Max Speed (Mbps)

Range (ft)

802.11a

5

54

115

802. 11b
803. 4

11

100

802. 11g
803. 4

54

140

802.11n

5

450

230

802.11ac

5

1300

230

Question 10

SSH stands for

Answer 10

Secure Shell
but does not protect against

A malicious user gaining root access to host (remote) machine
A malicious user gaining root access to the recipient machine

Question 11

X-Protocol is for who? Remote Desktop Protocol is for who?

Answer 11

Linux; Windows

Question 12

Remote Desktop Protocol and X-protocol is for

Answer 12

Graphical User Interface