Answer: C) Ctrl + Z Explanation: For undo the action or last action [Ctrl + Z] is used.

Answer: D) All of the above Explanation: A computer has two types of memory. 1. Non-volatile and 2. Volatile.   Volatile memory is computer memory that requires power to maintain the stored information. * It is a temporary memeory which cannot contain information permanently. Example :: RAM or Random Access Memory   Non-volatile memory is computer memory that can retain the stored information even when not powered. * It is a permanent memory in which data is stored in permanently. Examples :: Hard disc, ROM, Floppy discs, Magnetic tape,...

Answer: D) Processor Explanation: MIPS refers millions instruction per sec and is used to measure the speed of Processor.

Answer: D) Instanotes Explanation:

Answer: B) Mnemonics Explanation:

Answer: B) Now () Explanation: To display current date and time in MS Excel, we use Now() method.

Answer: A) wc Explanation:

Answer: C) It is anti-virus software Explanation: