Computer MCQ (Multiple Choice Questions)

The correct answer is C) Character printer.
Explanation:
A character printer is a type of printer that prints one character at a time. It is similar to a typewriter in that it prints characters by striking an inked ribbon against paper.
Character printers were commonly used in the early days of computing when other types of printers were not widely available. They were often used to print output from mainframe computers, such as accounting reports or inventory lists.
Dot-matrix printers, laser printers, and line printers are all examples of printers that can print more than one character at a time

The correct answer is A) Were the first to use integrated circuitry.
Explanation:
Third generation computers were developed in 1965-1971 and were characterized by the use of integrated circuitry. The development of integrated circuits allowed for the placement of multiple transistors, resistors, and capacitors on a single chip of silicon, which greatly increased the speed and efficiency of the computer.
The use of integrated circuits also reduced the size and power consumption of the computer, making them more practical for use in a variety of applications.
Therefore, option A (Were the first to use integrated circuitry) is the correct answer, and options B (Were the first to use built-in error detecting devices), C (Used transistors instead of vacuum tubes), and D (All of these) are incorrect.

The correct answer is B) Reset.
Explanation:
Reset is a term used to describe the process of setting a register or counter to a predefined value, which is usually the all-zero-state or some other default value.
The purpose of resetting a register or counter is to ensure that it starts from a known state and to eliminate any previous values that may have been stored in it.
Rerun, Remote, and Release are not terms used to describe the process of setting a register or counter to the all-zero-state or some other default value. Rerun means to run something again, Remote means to control something from a distance, and Release means to free or let go of something.
Therefore, option B (Reset) is the correct answer, and options A (Rerun), C (Remote), and D (Release) are incorrect.

The correct answer is B) ROM.
Explanation:
Read-Only Memory (ROM) is a type of non-volatile memory that is used to store firmware or software that is essential for the operation of a computer or other electronic device. Firmware is software that is permanently programmed into a hardware device, and it is used to control the device’s functions.
Random Access Memory (RAM), on the other hand, is a type of volatile memory that is used to store data temporarily during processing. RAM is used by the CPU to store data and instructions that are currently being executed.
Programmable Read-Only Memory (PROM) and Erasable Programmable Read-Only Memory (EPROM) are types of ROM that can be programmed or reprogrammed, respectively, after they are manufactured. PROM can be programmed once, and the programming cannot be changed, while EPROM can be erased using ultraviolet light and then reprogrammed.
Therefore, option B (ROM) is used to store firmware, and options A (RAM), C (PROM), and D (EPROM) are incorrect.

The correct answer is A) Magnetic tape.
Primary storage devices, also known as internal or main memory, are used to store data and instructions temporarily during processing. The data stored in primary storage devices can be accessed quickly by the CPU.
Magnetic disk and optical disk are examples of primary storage devices because they are used to store data and instructions temporarily during processing.
On the other hand, magnetic tape is a secondary storage device that is used to store large amounts of data for archival purposes or backup. It is not used for temporary storage during processing, and hence, it is not a primary storage device.
Therefore, option A (Magnetic tape) is NOT a primary storage device, and option D (All of the above) is incorrect.

The correct answer is D) Lock-out.
Lock-out is a mechanism for arranging controlled access to a shared resource, such as a file or a database, to prevent simultaneous access by multiple processes or users. The lock-out mechanism ensures that only one process or user can access the shared resource at a time, preventing conflicts and ensuring data consistency.
Retrieving is the process of accessing data from a database or other storage medium.
Sorting is the process of arranging data in a specific order, such as alphabetical or numerical order.
Balleting is not a recognized term in computer science.
Therefore, options A (Retrieving), B (Sorting), and C (Balleting) are incorrect.

The correct answer is B. Elementary data item.
An elementary data item is a data item that cannot be further subdivided into smaller units. It is the smallest unit of data that can be processed and has a specific meaning in the context of the data being processed. For example, a single digit or letter is an elementary data item.
A data element is a collection of one or more elementary data items that are related and together describe a single attribute or characteristic of an entity.
Data entry refers to the process of entering data into a computer system or database.
Database management refers to the process of organizing and managing data in a database system.

The correct answer is A. Tracks.
The concentric circles on floppy disks are known as tracks.
A track is a narrow, circular path on a magnetic disk that stores data. The data is written to and read from the disk as it spins under the read/write head of the disk drive. A single track is made up of many small magnetic regions, each of which represents a bit of data.
Option B (Cylinders) refers to a group of tracks that are located at the same distance from the center of the disk and are read or written to simultaneously by the read/write head.
Option C (Sectors) are sections of a track that are used to organize the data on the disk and facilitate reading and writing of data.
Option D (Segments) is not used in the context of floppy disks.
Therefore, the concentric circles on floppy disks are known as tracks.

The correct answer is D) Start bit.
In asynchronous communication, data is transmitted in a series of bits, with each byte of data being framed by a start bit and a stop bit. The start bit is always a value of 0 and indicates the beginning of a new byte of data. The stop bit is always a value of 1 and indicates the end of a byte of data.
Option A (Parity bit) is an additional bit that may be added to a byte of data to detect errors in transmission. It is not used to indicate the start of data transmission.
Option B (Status bit) is a bit used to indicate the status of a device or system, and is not related to data transmission.
Option C (Zero bit) is not used as a start bit in asynchronous communication.
Therefore, the correct answer is D) Start bit.

The correct answer is A) SSI.
SSI stands for Small-Scale Integration and refers to electronic circuits that contain a small number of transistors, typically up to 100. SSI circuits were developed in the late 1960s and early 1970s, and were used in early electronic devices such as calculators and digital watches.
Option B (MSI) stands for Medium-Scale Integration and refers to electronic circuits that contain a moderate number of transistors, typically between 100 and 1000. MSI circuits were developed in the mid-1970s, and were used in devices such as early personal computers.
Option C (DPS) and Option D (RJE) are not related to electronic circuits and are therefore incorrect.
Therefore, the correct answer is A) SSI.