Institution: SONALI BANK LTD Exam: Sonali Bank Ltd - Assistant Programmer - 26.08.2016 ||
Topic: ICT (তথ্য ও যোগাযোগ প্রযুক্তি), Subject: Computer and ICT (তথ্য ও যোগাযোগ প্রযুক্তি)

Best Answer Explained in Below-:

The correct answer to the question 'ALU is____' is A) ARITHMETIC LOGIC UNIT. An ALU, or Arithmetic Logic Unit, is a fundamental component of a computer’s CPU (Central Processing Unit) that performs arithmetic and logical operations. These operations include basic mathematical functions such as addition, subtraction, multiplication, and division, as well as logical operations such as AND, OR, NOT, and comparisons.

The architecture of a CPU typically consists of an ALU, control unit, and registers, which together execute instructions from computer programs. The ALU is crucial for processing data and making decisions based on boolean algebra, which underlies all computer operations. It operates on binary numbers and can handle both integer and floating-point arithmetic.

The other options provided (B, C, and D) do not accurately describe the function or purpose of an ALU. The term 'ARAY LOGIC UNIT' and 'APPLICATION LOGIC UNIT' are not standard terminologies in computer architecture. Therefore, the identification of ALU as 'Arithmetic Logic Unit' is essential for understanding its pivotal role in computational tasks, making option A the correct choice.