Chapter 1

Question 1

DNS

Answer 1

Translates domain names to IP addresses

Question 2

DHCP

Answer 2

Provides addressing information automatically so you can communicate on a network. Includes IP address, subnetmask, default gateway, DNS server.

Question 3

Default Gateway

Answer 3

Allows you to communicate with devices outside of your Local Area Network (LAN).

Question 4

IP Address

Answer 4

Consists of a Network portion and Host portion and must be unique.

Question 5

End Devices

Answer 5

Client, server, or both. All computers connected to a network that participate directly are Hosts, Hosts are also called end devices. Each end device is identified by an address.

Question 6

Servers

Answer 6

Computers that provide information to other end devices on a network. Each service requires separate server software. A single computer can run multiple types of server software.

Question 7

Clients

Answer 7

Computers that request and display information obtained from a server.

Question 8

Peer-to-Peer Network

Answer 8

When a computer carries out both roles (Client and Server).

Question 9

Intermediary Devices

Answer 9

Connect the end devices to the network and can connect multiple networks. Provide connectivity and ensure data flows across a network.

Question 10

Network Media

Answer 10

Communication across a network is carried on a medium. Modern networks primarily use 3 types of media (copper, fibre, wireless), different types have different features and benefits.

Question 11

Copper

Answer 11

Metallic wires in cables. Data is encoded into electrical impulses.

Question 12

Fibre

Answer 12

Glass/fibre optic cable. Data is encoded as pulses of light.

Question 13

Wireless

Answer 13

Transmission. Data is encoded using wavelengths from the electromagnetic spectrum.

Question 14

Network Interface Card

Answer 14

A NIC or LAN adapter provides the physical connection to the network at the PC or other end device. The media connecting the PC to a networking device plug directly into the NIC.

Question 15

Physical Port

Answer 15

A connector/outlet on a networking device where media is connected to an end device or other net device.

Question 16

Interface

Answer 16

Specialized ports on a net device that connect to individual networks.

Question 17

Local Area Network

Answer 17

A network infrastructure that provides access to users & end devices in a small geographical area.

Question 18

Wide Area Network (WAN)

Answer 18

A network infrastructure that provides access to other networks over a wide geographical area.

Question 19

Network Architecture

Answer 19

4 Characteristics to meet expectations:
Fault tolerance
Scalability
Quality of Service (QoS)
Security