Section 2: Network Basics

Question 1

What is 5 9’s of availability in networking?

Answer 1

The expectation that a network will be up and available for 99.999% of the time

Question 2

Define: Client

Answer 2

A device used by an end-user to access the network

Question 3

Define: Server

Answer 3

A device that provides resources to the rest of the network

Question 4

Define: Hub

Answer 4

Older technology that connects network devices together

Question 5

Define: Wireless Access Point (WAP)

Answer 5

A device that allows wireless devices to connect into a wired network

Question 6

Define: Switch

Answer 6

A device that connects network devices together (like a smart and next generation hub)

Question 7

Define: Router

Answer 7

Connects two different networks together and forwards traffic to and from a network

Question 8

Define: Media

Answer 8

Connects two decives or a device to a switch port. Ex- cables

Question 9

Wide Area Network (WAN) Link

Answer 9

Physically connects two geographically dispered networks. Mostly connects internal network to an external one

Question 10

Define: Client/Server Model

Answer 10

A model that uses a dedicated server to provide access to files, scanners, printers, and other resources

Question 11

What are the benefits of a Client/Server model?

Answer 11

1. Centralized Administration
2. Easier management
3. Better scalability

Question 12

What are the drawbacks of a Client/Server model?

Answer 12

1. Higher cost
2. Requires specialized OS
3. Requires dedicated resources

Question 13

Define: Peer-to-Peer Model

Answer 13

A model where peers/devices share resources (files/printers) directly with others

Question 14

What are the benefits of Peer-to-Peer model?

Answer 14

1. Lower cost
2. No dedicated resources
3. No specialized OS

Question 15

What are the drawbacks of Peer-to-Peer model?

Answer 15

1. Decentralized management
2. Inefficient for large networks
3. Poor scalability

Question 16

Define: Personal Area Network (PAN)

Answer 16

Smallest type of wired or wireless network and covers the least amount of area. Usually covers about 10ft or less. ex: Bluetooth, USB

Question 17

Define: Local Area Network (LAN)

Answer 17

Connects components within a limited distance. Usually covers upto a few hundred feet. Like small office or an apartment. ex: Internal wired or wireless connection in office or school

Question 18

Define: Campus Area Network (CAN)

Answer 18

Connects LANs that are building-ventric across a university, industrial park, or business park. Usually covers up to a few miles. ex: wired or wireless connection in college campuses, business parks, military bases

Question 19

Define: Metropolitan Area Network (MAN)

Answer 19

Connects scattered locations across a city or metro area. Usually covers upto about 25 miles. ex: College with campuses throughout a city

Question 20

Define: Wide Area Network (WAN)

Answer 20

Connects geographically disparate internal networks and consists of leased lines or VPNs. Can have worldwide coverage. ex: Internet, office in new york and california connected with a private internet

Question 21

What are the two ways in which a network topology can be discussed?

Answer 21

1. Physical topology (How devices are connected by media)
2. Logical topology (How the actual network traffic flows)

Question 22

Define: Bus Topology

Answer 22

Uses a single cable where each device taps into by using either a vampire tap or a T-connector

Question 23

Define: Ring Topology

Answer 23

Uses a cable running in a circular loop where each device connects to the ring but data travels in a singular direction