CHAPTER 7 - NETWORKS

Question 1

1 NETWORKS

Answer 1

Links multiple computer systems and enables them to share data and resources

Question 2

2 WHAT IS LAN? LAN CONSIST OF ….

Answer 2

• LOCAL AREA NETWORK
• Consist of :
  + CAN (Campus Area Network)
  + HAN (Home Area Network)
  + PAN (Personal Area Network)

Question 3

3 LAN

Answer 3

• Uses cables, radio waves, or infrared signals.

- Links computers in a limited geographic area.

Question 4

4 MAN

Answer 4

• Designed for a city

- Larger than a LAN, smaller than a WAN

Question 5

5 WAN

Answer 5

• Uses long-distance transmission media
• Links computer systems a few miles or thousand of miles
• Internet is the largest WAN

Question 6

6 CAN

Answer 6

• Several LANs located in various locations on a college or business campus
• Smaller than a WAN
• Use devices such as switches, hubs, and routers

Question 7

7 PAN

Answer 7

• Network of individual’s own personal devices
• Usually within a range of 32 feet
• Usually use wireless technology

Question 8

8 COMMUNICATION DEVICES

Answer 8

- Convert data into signals to travel over a medium. Consist of: 
\+ Computers
\+ Modems
\+ Routers
\+ Switches
\+ Hubs
\+ Wireless access points
\+ Network Interface Cards (NICs)

Question 9

9 NODE

Answer 9

Any devices connected to a network

Question 10

10 LOGICAL ADDRESS

Answer 10

Unique address assigned to each node on the network

Question 11

11 PHYSICAL ADDRESS

Answer 11

• Unique numeric that identifies each node on the network built into the hardware
• Data Link Control/Connection Identifier (DLCI)
• Media Access Control (MAC)

Question 12

12 NETWORK INTERFACE CARD (NIC)

Answer 12

• Expansion board or adapter that provides connection between the computer and the network
• Notebook computer have wireless NICs

Question 13

13 USB WIRELESS NETWORK ADAPTER

Answer 13

• Plus into a USB port

- Usually provides an intuitive graphical user interface (GUI) for easy configuration

Question 14

14 USB DONGLE

Answer 14

• Device inserted into a USB port that adds additional features to the base system.
• Examples: enabling network connectivity and increasing RAM

Question 15

15 WIRELESS PC CARD ADAPTER

Answer 15

• About the size of a credit card
• Inserted into a slot on the side of most notebooks and netbooks
• Has built-in WiFi antenna that provides wireless capability
• LED lights that indicate whether the computer is connected

Question 16

16 HUB

Answer 16

• Joins multiple computers together in a single network

- Does not manage traffic between the connections

Question 17

17 SWITCHES

Answer 17

• Filter and forward data between nodes

- Are similar to routers but work within a single network

Question 18

18 ROUTERS

Answer 18

• Connect two or more networks
• Inspect the source and target of a data package
• Determine the best route to transmit data

Question 19

19 WIRELESS ACCESS POINT (WAP)

Answer 19

• Receives and transmit radio singals

- Joins wireless nodes to a wired network

Question 20

20 SERVER

Answer 20

• Computer or device with software that manages network resources, such as files, e-mails, printers, databases

Question 21

21 FILE SERVER

Answer 21

• Most common type of server
• High-speed computer that provides program and data files to network users
• Contains the network operating system (NOS)

Question 22

22 NOS

Answer 22

• File directions for file and resources location on the LAN
• Automated distribution of software updates to desktop computers on the WAN
• Internet services support
• Protection of services and data
• Access to connected hardware by authorized users

Question 23

23 NETWORK ADMINISTRATOR

Answer 23

• Also called network engineer
• Installs, maintains, supports computer networks
• Interacts with users
• Handle security
• Troubleshoot problems