1) when one or more computers are connected is called? a) LAN b) WAN c) Computer Network d) Digital devices 2) this is an example of resource that share using the internet? a) WWW b) search engine c) internet d) connection 3) What happens when you encrypt data? a) You delete the data b) You make the data bigger c) You make the data smaller d) You scramble the data so others can't read it 4) What is the Caesar cipher used for? a) Writing secret messages b) Connecting to Wi-Fi c) Fixing broken computers d) Playing music 5) What is Ethernet? a) A wireless connection b) A cable that connects computers to the internet c) A type of computer game d) A kind of computer screen 6) What is an internet connection? a) A way to play games b) A link between your device and the internet c) A type of password d) A computer screen 7) What makes a network efficient? a) Having no security b) Fast data transfer and good connections c) Using old computers d) Having no passwords 8) What is the main job of a server in a computer network? a) To play games b) To store and share files with other computers c) To print documents d) To show videos 9) which software do you use to look at the World Wide Web? a) Google chrome b) youtube c) roblox d) paint 10) the advantage of using Wi-Fi is ? a) no need for wires b) wi-fi speed may not be reliable c) data travels slowly d) wires can get broken 11) wireless connection means having no wires? a) true b) false 12) network security is important because it keeps our data safe? a) true b) false 13) world wide web is a collection of data? a) true b) false 14) data transfer means playing games on computer? a) true b) false 15) what is Wi-fi? a) A type of computer game b) A wireless way to connect to the internet c) A type of computer mouse d) A computer screen 16) Which of these is a secure way to protect your network? a) Telling everyone your password b) Using the same password for everything c) Using a strong password with numbers and letters d) Leaving your computer unlocked

GRADE 4

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