Sensitive data can be protected from prying eyes using _________
File permissions
File locks
passwords
encryption
Correct answer is A
A File permission specifies who and what can read, write, modify and access them. It therefore important as the codex explains, because without it in place, anyone or anything can access confidential files
Software
computer
computer time
use
Correct answer is C
Computer time theft is hacking into a large computer system and utilising its computing resources for a purpose not authorised by the owner of the system
Which of the following software can't be categorized as an application software?
DBM
MS-DOS
Spreadsheet
word processor
Correct answer is B
MS-DOS can't be classified as an application software because, it is an operating system software. And OS are classified as system software not application software
A half byte is known as ________
data
bit
half byte
nibble
Correct answer is D
A nibble is a 4 bit aggression, or half an octet. It has 16 possible values, and can be represented by a single hexadecimal digit which are called hex digit
Which of the memories must be refreshed many times per second?
EPROM
ROM
Static RAM
Dynamic RAM
Correct answer is D
Dynamic RAM memory must be refreshed many times a second because without it being refreshed often, it will lose the data contents it holds