IT &computer MCQ section 4 MCQ Questions & Answers Detailed Explanation

Answer: (b)

Pseudocode is an informal high-level description of the operating principle of a computer program or other algorithm. It uses the structural conventions of a programming language, but is intended for human reading rather than machine reading.

Answer: (c)

Assembly language uses a mnemonics to represent each low-level machine operation or opcode. Some opcodes require one or more operands as part of the instruction, and most assemblers can take labels and symbols as operands to represent addresses and constants, instead of hard coding them into the program.

Answer: (b)

Unix is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs. It provides separate logins for each user and separate storage space. Most importantly it supports separate security for users and groups.

Answer: (b)

An attribute that uniquely identifies the rows of a table is known as the primary key.

Answer: (a)

IC, or An integrated circuit is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors. These extremely small electronics can perform calculations and store data using either digital or analog technology.

Answer: (a)

Passwords are often used to protect objects in the computer system, in the absence of more complete protection schemes. They can be considered a special case of either keys or capabilities. Passwords are the most common approach to authenticating a user identity.