Computer fundamental MCQ Questions and answers- Technical Aptitude

In digital data transmission, two important terms are used to describe the transmission speed — bit rate and baud rate.

Bit Rate: It is the number of bits transmitted per second. For example, if 1000 bits are sent every second, the bit rate is 1000 bps (bits per second).

Baud Rate: It is the number of signal units (also called symbols) transmitted per second. A symbol may represent one or more bits depending on the modulation technique used.

When each symbol represents exactly one bit (as is common in basic transmission systems), then:

Baud Rate = Bit Rate

If more complex encoding techniques are used, where each symbol can represent multiple bits (e.g., 2, 4, or more), then:

Bit Rate = Baud Rate × Number of bits per symbol

But the question refers generally to digital data transmission without such specific encoding. So, in most simple digital transmission cases, baud rate equals bit rate.

Hence, the correct answer is Option A.

1) Select the Start button, then select Control Panel > System and Maintenance > Backup and Restore.
2) Do one of the following: If you've never used Windows Backup before or recently upgraded your version of Windows, select Set up backup, and then follow the steps in the wizard.

RAM with 8K memory can store 8192 bytes or 65536 bits.
8K means 8 × 1024 bits = 8192 bits.
RAM size generally mentioned in bits.
Such as 4K × 8, 8K × 8, 4K × 16, 8K × 16 likewise.
For example 8K × 16, a RAM which has 8K = 8192

In computer programming, redundant code is source code or compiled code in a computer program that is unnecessary, such as:
1) Recomputing a value that has previously been calculated and is still available, code that is never executed (known as unreachable code).
2) Code which is executed but has no external effect (EG, does not change the output produced by a program; known as dead code).

Printer is an output device others are input devices. Printer also called computer printer, electronic device that accepts text files or images from a computer and transfers them to a medium such as paper or film. It can be connected directly to the computer or indirectly via a network.

The length of time required by a computer to retrieve or store data. The time required for a computer program or device to locate and retrieve, or to write and store, a piece of data. Memory access time is how long it takes for a character in RAM to be transferred to or from the CPU.

The 0 output indicates that the output is lower than the input then the input may be whatever. Therefore, in negative logic, the logic state 1 corresponds to the output 1 with lower voltage level.

Arithmetic & Logic unit. The central processing unit (CPU) or processor is the unit which performs most of the processing inside a computer.

The least expensive OCR units can read to marks. OCR stands for "Optical Character Recognition." It is a technology that recognizes text within a digital image. It is commonly used to recognize text in scanned documents and images.

In computer input unit is defined as an input device, a piece of computer hardware apparatus used to supply a data processing system including a computer or information device with control and data signals. Examples of input device: Mouse, keyboards, scanners, joysticks, and digital cameras.