Chapter 7: Telecommunications, the Internet, and Wireless Technology

Question 1

What is a network operating system?

Answer 1

This system routes and manages communications on a network

Question 2

What are hubs?

Answer 2

Devices connecting network components

Question 3

What is a switch?

Answer 3

This can filter and forward data to anywhere in the network

Question 4

What is a router?

Answer 4

A router processes data packets through different networks

Question 5

What is software-defined networking?

Answer 5

This is a networking approach where many control functions are run by one program. Useful in cloud computing

Question 6

What are key digital networking technologies?

Answer 6

1. Client/server computing
2. Packet switching
3. TCP/IP and connectivity

Question 7

What is packet switching?

Answer 7

Messages are sliced into packkets and sending them along different communications path. They are reassembled once they arrive at their destination

Question 8

What is a protocol?

Answer 8

These are rules and procedures for transmission of information

Question 9

What is TCP/IP

Answer 9

This stands for Transmission Control Protocol/ Internet Protocol. This is developed to help transmit data over long distances.

Question 10

Name the four layers of TCP/IP

Answer 10

1. Application layer
2. Transport layer
3. Internet layer
4. Network Interface layers

Question 11

What is an application layer of TCP/IP?

Answer 11

Enables client application program access to other layers and defines data exchange protocols

Question 12

What is the transport layer of TCP/IP?

Answer 12

This provides the first layer with communication and packet services. It includes TCP

Question 13

What is the Internet layer of TCP/IP?

Answer 13

This addresses, routes and packages data packets called IP datagrams. This is the IP protocol

Question 14

What is the network interface layer of TCP/IP?

Answer 14

This layer places packets on and receives from network medium

Question 15

What is a local area network?

Answer 15

A LAN connects pc’s within a half-mile radius

Question 16

What is a peer-to-peer network?

Answer 16

This network is used in small networks. All processors are treated equally

Question 17

What is a Wide Area Network?

Answer 17

A WAN spans broad distances. Connection is done through public networks

Question 18

What are metropolitan Area Networks

Answer 18

A MAN spans a metropolitan area

Question 19

What is bandwith?

Answer 19

This is the range of frequencies accomodated on a communications network. Difference between highest and lowest frequency

Question 20

What is a Domain Name system?

Answer 20

This system converst domain names (natural language convention) into IP adresses

Question 21

What is a unified communications system?

Answer 21

This system integrates multiple channels for different communication modes into a single experience where customers can swith between these models

Question 21

What is Voice over IP (VoIP)?

Answer 21

This delivers voice information into a digital form through packet switching

Question 22

What is a Digital subscriber line technology?

Answer 22

This technology uses phonelines to carry voice, data and video at high speeds depending on usage and distance

Question 23

What is a virtual private network (VPN)?

Answer 23

This is an encrypted private network configured within a public networ to use economies of scale and larger network’s facilities.

Question 24

What is semantic search?

Answer 24

This is building search engines that really understand human behaviour

Question 24

What is predictive search?

Answer 24

This search algorithm guesses what you are looking for and gives suggestions based on search words

Question 24

What is search engine optimization (SEO)?

Answer 24

This is optimizing a website ranking on google by improving the quality and volume of web traffic to a website

Question 25

What is Internet2?

Answer 25

This is a consortium focused on developing next-gen Internet technology

Question 25

What is Really Simple Syndication (RSS)?

Answer 25

This pulls specific content to user’s computers

Question 26

What is Web3?

Answer 26

This is the next ‘web’ that would be more decentralized and controlled by users

Question 27

Name the principal technologies for wireless networking, communications and Internet access?

Answer 27

1. Cellular systems (smartphones)
2. Wireless computer network and internet acces
3. RFID & Wireless sensor networks

Question 28

Name the differences between 3G, 4G and 5G

Answer 28

3G networks were good for email and web browsing, but too slow for videos. Its being phased out

4G networks are good for downloading, uploading, watching high-definition videos etc.

5G networks will transfer much lager data amounts and be able to connect to many more devices at once. Reduces delays

Question 29

What is Bluetooth?

Answer 29

This is a wireless networking standard used for creating personal are networks with connections within 10m range.

Question 30

What are hotspots?

Answer 30

Locations with access points providing wireless Internet access, often in public spaces

Question 31

What is WiMax?

Answer 31

This is Worldwide Interoperatibility for Microwave Access has wireless range of 30 miles instead of 300 feet.

Question 32

What is RFID?

Answer 32

Radio Frequency Identification systems provide technology for tracking movements of goods through supply chains through tags with microchips that send a signal to the reader without a required visual in close proximity.

Question 33

What is near field communication (NFC)?

Answer 33

These are short-range wireless connections using electromagnetic fields to exchange data when brought within a few centimeters of each other.

Question 34

What are wireless sensor networks?

Answer 34

These networks are interconnected wireless devices in an environment measuring many points over large spaces with built-in processing capabilities.