Beyond Networking and Telecommunications

Question 1

What are computer networks?

Answer 1

System that connects computers and other devices through communications media so that data and info can be transmitted

Question 2

What is bandwidth?

Answer 2

Transmission capacity of a network (in bits per second)

Question 3

What are the conversions between the bytes

Answer 3

1 byte = 8 bits
1 kilobyte = 1024 bytes
1 MB = 1024 KB
1GB = 1024 MB
1 TB = 1024 GB

Question 4

What are modems?

Answer 4

computer networks communicate through digital signals which are discrete pulses that are either on or off, representing a series of bits. To convert analog to digital there’s dial up modems, cable modems, and DSL modems

Question 5

What is network protocols

Answer 5

nodes of the network work together by adhering to a common set of rules and procedures

Question 6

What is the Transmission control protocol

Answer 6

the protocol of the internet

Question 7

4 layers of the TCP/IP reference model/protocols

Answer 7

1. Application layer: enables client application programs to access the other layers. Defines the protocols that applications use to exchange data
2. Transport layer: provides the application layer with communication and packet services
3. Internet layer: responsible for addressing, routing, and packaging data packets
4. Network interface layer: places packets on, and receives them from, the network media,, which can be any networking technology

Question 8

What is distributed processing?

Answer 8

• Client/server computing (fat or thin)
• peer-to-peer processing (p2P) approaches:
  1. accessing unused CPU power among networked computers
  2. Real-time, person to person collaboration
  3. Advanced search and file sharing

Question 9

What is an Interest service provider (ISP)

Answer 9

Company that provides internet connections for a fee (Bell, rogers…)

Question 10

What are internet connection methods?

Answer 10

1. Dial-up (access through telephone line)
2. DSL (broadband access through telephone companies)
3. Cable modem (access over cable TV coaxial cable
4. Satellite (Access over radio-wave satellite network
5. Wireless (access through WIFI access point or cell phone network)
6. Fibre-to-the-home (FTTH) (broadband access through fibre optic cable)

Question 11

What are addresses on the internet

Answer 11

Each computer has an IP address. It denotes a specific host and the network

Question 12

What is the world wide web

Answer 12

a system of universally accepted standards for storing retrieving formatting and displaying information through a client/server architecture. Using WWW requires hypertext and hyperlinks, website and servers, HTML, CSS…, browsers and URL