76. Which of the following is an example of a computer output device?
a) keyboard
b) mouse
c) printer
d) microphone
77. What is the purpose of computer firewall?
a) to store data
b) to process data
c) to display data
d) to protect a computer network by monitoring and controlling incoming and outgoing network traffic
78. Which of the following is an example of a computer software application?
a) hard drive
b) printer
c) operating system
d) Microsoft Excel
79. What is the purpose of computer virtualization?
a) to store data
b) to process data
c) to display data
d) to create multiple virtual machines or operating systems on a single physical computer system
80. Which of the following is an example of a computer programming language?
a) C++
b) HTML
c) SQL
d) all of the above
