Computer

What is computer?

• A device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming
• A type of food
• A musical instrument
• A type of animal

_____ is founded by Steve Jobs

What does the following command do?

mv file1 file2

• moves file1 and file2

• combines file1 and file2

• renames file1 to file2

• renames file2 to file1

Firewall acts as ____ between networks.

• Barrier

• Border

• Messenger

• None of all.

To remove all permissions from others which of the following command is correct?

• chmod 770 filename

• chmod 007 filename

• chmod 707 filename

• None of the options

Which command is used to make a hidden directory in linux?

• mkdir -h directoryName

• mkdir hidden directoryName

• mkdir -hd directoryName

• mkdir .directoryName