SSC CGL Previous Year Questions: Computers - 2 - SSC CGL MCQ

Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.

A parity bit, or check bit is a bit added to the end of a string of binary code that indicates whether the number of bits in the string with the value one is even or odd.
Parity bits are used as the simplest form of error detecting code.

Memory management is the process of controlling and coordinating computer memory, assigning portions called blocks to various running programs to optimize overall system performance.It involves components that physically store data, such as RAM (random access memory) chips, memory caches, and flash-based SSDs (solid-state drives).

The first step the CPU carries out is to fetch some data instructions from main memory then store them in its own internal temporary memory areas. The next step is for the CPU to make sense of the instruction it has just fetched this process is called Decode. Execute is the part of the cycle when data processing actually takes place.

• Bit (Binary digit) = a bit can only have one of two possible values.
• Byte → 1 byte = 8 bits
• Field → one or more bits/bytes holding a single piece of information about a single entity
• Record (Logical) → all the fields which apply to a single entity (except for "Inverted" files)
• File → all the records which apply to a collection of entities
• Database → a related collection of files.

Round Robin is a CPU scheduling algorithm where each process is assigned a fixed time slot in a cyclic way.

FORTRAN is derived from Formula Translator.

Firmware is the permanent software programmed into a read-only memory.

The First-Come, First-Served (FCFS) scheduling algorithm is the simplest CPU scheduling algorithm.

Because of its volatility, RAM can only store current data which are in use, so they can be quickly reached by the device's processor.

Keyboard is one of the input devices which is functionally opposite to ouput devices like printer.

The Epson HX-20 (also kn own as th e HC-20) is generally regarded as the first laptop computer, announced in November 1981, although first sold widely in 1983. Hailed by BusinessWeek magazine as the "fourth revolution in personal computing", it is generally considered both the first notebook and handheld computer.

The acronym TELNET stands for Telephone Network.

Image files can be sent along with the e-mail using attachments.An e-mail attachment is a file that is attached to an e-mail message. For example, you may attach a graphic, a spreadsheet, or a word processing document.

The invention of integrated chips led to th e third generation of computers. During the period of 1964 to 1971 third generation computers were developed. The third generation computers emerged with the development of IC (Integrated Circuits). IC is a single component containing a number of transistors. It made the computers more fast and reliable.

Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages. This consists of a central node, to which all other nodes are connected; this central node provides a common connection point for all nodes through a hub.

.mdb is not a picture file. It is  a database file used by Microsoft Access. Though Access is tied into the Microsoft Office, MDB is Access's own format, which is based on the Access Jet Database Engine..jpeg; .gif; and .png files are graphic files. The PNG, JPEG, and GIF formats are most often used to display images on the Internet. JPEG stands for Joint Photographic Experts Group. PNG stands for Portable Network Graphics. GIF stands for Graphics Interchange Format.

Terrabyte (TB) is the largest measure of memory.
1 Bit = Binary Digit;
8 Bits = 1 Byte;
1024 Bytes = 1 KB (Kilo Byte);
1024 KB = 1 MB (Mega Byte);
1024 MB = 1 GB(Giga Byte)
1024 GB = 1 TB(Terra Byte).
Thus TB > GB> MB > KB > Byte > Bit

Pictures, audio as well as video can be sent through e-mail.

Communications satellites are placed in Earth's orbit for the purpose of sending and receiving communication data between a source and destination. It is used to provide data communication and relaying services for various services.

Digital circuits represent signals by discrete bands of analogue levels. The levels within a band represents in most cases either two states represented by 0 and 1 (binary).

Daisy wheel printing is an impact printing technology invented in 1969 by David S. Lee at Diablo Data Systems. It uses interchangeable pre-formed type elements, each with typically 96 glyphs, to generate high-quality output comparable to premium typewriters such as the IBM Selectric, but two to three times faster.

A television channel is a physical or virtual channel over which a television station or television network is distributed. Channel numbers represent actual frequencies used to broadcast the television signal.
For example, in North America. "Channel 2" refers to the broadcast or cable band of 54 to 60 MHz, with carrier frequencies of 55.25 MHz for NTSC analog video (VSB) and 59.75 MHz for analog audio (FM), or 55.31 MHz for digital ATSC (8VSB).

Mark Elliot Zuckerburg is an American computer programmer and internet entrepreneur. He is best known as one of five co-founders of the social networking website Facebook.

The IBM 650 Magn etic Dr um Data-Processin g Machine was one of IBM's early computers, and the world's first mass-produced computer. It was announced in 1953 and almost 2000 systems were produced, the last in 1962. Support for the 650 and its component units was withdrawn in 1969.

A queue is a collection in which the entities in the collection are kept in order. This makes the queue a First-In-First-Out (FIFO) data structure in which the first element added to the queue will be the first one to be removed.

The Electronic Numerical Integrator and Computer (ENIAC) was the first general-purpose electronic computer. It was constructed and operated at The Moore School of Electrical Engineering.

The TCP/IP (Transmission Control Protocol/Internet Protocol) is the most widely used set of communications protocols used for the Internet and other similar networks.

A nibble is equal to 4 bits. In computing, a nibble (often nybble or even nyble to match the vowels of byte) is a four-bit aggregation, or half an octet. As a nibble contains 4 bits, there are sixteen possible values, so a nibble corresponds to a single hexadecimal digit (thus, it is often referred to as a "hex digit" or "hexit").

In html, tags con sist of keywords en closed with in angular brackets. In the HTML syntax, most elements are written with a start tag and an end tag, with the content in between. An HTML tag is composed of the name of the element, surrounded by angle brackets.
An end tag also has a slash after the opening angle bracket, to distinguish it from the start tag.