Internet and Network Technologies Flashcards
Define the concept grid computing
Processing power of many computers are combined in order to complete a single task/solve a problem
Name ONE communication technology that uses light to transfer data
(1) Fibre optic
(2) Li-Fi (Light fidelity)
(3) IR (Infrared)
Many people and organisations use video conferencing for meetings or events, e.g. Zoom, Skype or Google Meet
Suggest TWO good practices an organiser can implement to manage a video conference
(1) Ensure all participants hear/see the speaker and/or other participants/presentations
(2) Have participants mute their microphones if they are not speaking/Mute the participants
(3) Give all participants an opportunity to participate, e.g. chat box, hands-up, voice and sharing their screen
(4) Enable setting for filtering out background noises/Disallow distracting backgrounds
(5) Enable transcripts
(6) Record the proceedings of the meeting
(7) Add security measures for joining, e.g. waiting room
Many people and organisations use video conferencing for meetings or events, e.g. Zoom, Skype or Google Meet
Explain TWO disadvantages of video conferencing
(1) Less in-person contact
(2) Possible network instability and time lag/Intermittent software issues
(3) Lack of full participation/engagement
(4) Participants’ inability to use the technology adequately
(5) Requires specific hardware, e.g. webcam
(6) Data intensive
Give TWO reasons why users cannot access a file on a network
(1) Access rights may prevent users from opening the file
(2) Problem with the connection to the server
(3) Server is offline
(4) The file is corrupt
People in your household share the internet connection in your home
Give TWO ways to prevent problems, such as buffering and delays, while using the internet without having to close applications or restricting the number of users.
(1) Disable automatic updates/Enable data saver
(2) Stream at a lower resolution
(3) Reduce use of multimedia/Disable automatic video play in certain apps
(4) Reduce distance/obstacles between router and user
Give TWO reasons why instant messaging is widely used
(1) Easy access to IM apps via smartphones/multiple platforms
(2) Real-time communication
(3) Easy to create and manage groups
(4) Messages are usually secure/End-to-end encryption
(5) Additional functionality, e.g. voice call/group call/voice note
What type of network can a company use to connect their offices across the country?
WAN
Give TWO reasons why a teacher would require learners to log in on the computer centre’s network
1) Necessary for secure profiles/Gain access to folder associated with each profile
2) User profiles distinguish users on a network/The access rights for each user
3) Necessary for a classroom management system
4) Necessary to access services provided by the network server, e.g. file sharing, hardware sharing, internet
Explain TWO reasons why you could get a ‘Page not found’ error when you try to open a bookmarked website
1) Website is down due to maintenance
2) Page was removed/Bookmarked page does not exist anymore
3) (Host) server is offline
Suggest TWO criteria you should consider when choosing an ISP
1) Coverage of the ISP’s services
2) Types of services/security offered by the ISP
3) Download and upload speeds offered
4) Support offered by the ISP
5) Reviews from other customers, e.g. reliability
6) Pricing/Terms of the various packages/contracts available
Recommend TWO netiquette rules for a WhatsApp study group chat
1) Be kind and courteous
2) Do not send large attachments
3) Do not type in capital letters
4) Do not use vulgar language/Use more formal language
5) Keep chats related to the purpose of the group/Do not send spam messages
Explain the following concept
Search engine
Software/Application that finds/searches for web pages by using key words/phrases
Explain the following concept
Web browser
A program that gives access to the www / Software that allows the user to explore and to view web pages
Give a reason why users experience buffering when streaming videos
1) Insufficient bandwidth/Slow internet connection
2) Streaming in high resolution
Give TWO uses of IoT in a home environment
1) Devices can be monitored via the internet
2) Devices can be controlled via the internet
3) A variety of sensors can be used to produce data for decision-making
4) Improves reliability of the automated devices
5) Creates opportunities for the integration of various devices
Name the system that a research company can use to address the need for more computer processing power, without having to buy new hardware
Grid computing
Name a type of internet connection you would recommend for a school AND motivate your answer
Fibre
1) High speed internet access
2) Cost effective internet access
3) Reliable/stable
What is the advantage of using the https protocol over the http protocol?
Https indicates that the website is secure/encrypted
Suggest TWO ways in which software can be used to protect a network from unauthorised users
1) Use a firewall
2) Set up access rights/logins for authorised users (username and password)
3) Use data encryption
Give TWO reasons why some users prefer to listen to a podcast rather than reading text
1) For visually impaired people/special needs/physical disabilities
2) To learn pronunciation of words
3) Some people learn better through audio means
4) Many people multi-task when listening to a podcast, e.g. wear earphones while jogging
5) User can control the listening speed, etc.
A particular router has only four network cable ports
State TWO ways to connect more than four devices to this router
1) Add a wireless connection/Access Point
2) Add a switch
Give TWO reasons why internet access is important to users of computing devices
1) Search for information
2) E-learning
3) Use social media
4) Internet services, e.g. financial services, etc.
5) Software updates for latest features
6) Cloud computing/storage
7) Collaboration/Communication between users
8) Working from home
9) Entertainment/streaming/gaming
Discuss TWO advantages of using a VPN
1) Secure connection to a network/internet/application
2) Can virtually change your geographic location
3) Provides privacy by masking your IP address
4) Provide simultaneous access to multiple users and remote users
