Computer MCQs

Explanation: A set of codes that extends the basic ASCII set. The basic ASCII set uses 7 bits for each character, giving it a total of 128 unique symbols. ASCII coding provides 128 characters while extended ASCII coding provides 256 characters. ASCII, abbreviation of American Standard Code For Information Interchange, a standard data-transmission code that is used by smaller and less-powerful computers to represent both textual data (letters, numbers, and punctuation marks) and noninput-device commands (control characters). Like other coding systems, it converts information into standardized digital formats that allow computers to communicate with each other and to efficiently process and store data. The ASCII code was originally developed for teletypewriters but eventually found wide application in personal computers. The standard ASCII code uses seven-digit binary numbers; i.e., numbers consisting of various sequences of 0’s and 1’s. The code can represent 128 different characters, since there are 128 different possible combinations of seven 0’s and 1’s. The binary sequence 1010000, for example, represents an uppercase “P,” while the sequence 1110000 represents a lowercase “p.” Digital computers use a binary code that is arranged in groups of eight rather than of seven digits, or bits. Each such eight-digit group is called a byte. Because digital computers use eight-bit bytes, the ASCII code is commonly embedded in an eight-bit field consisting of the seven information bits and a parity bit that is used for error-checking purposes or to represent special symbols. The use of an eight-bit system increased the number of characters the code could represent to 256. The eight-bit system, which is known as the extended ASCII code, was introduced in 1981 by the International Business Machines Corporation (IBM) for use with its first model of personal computer. This extended ASCII code soon became the industry-wide standard for personal computers.

Explanation: The correct answer is the Formula bar . The formula bar displays the content of the active cell in MS Excel . The formula bar can be used to edit the content of any cell and can be expanded to show multiple lines for the same formula. The name box in the worksheet displays the address of the selected cell. The title bar displays the title of the window and It includes the close, minimize, and maximize buttons. An active cell refers to a cell in an Excel spreadsheet that is currently selected by clicking the mouse pointer or keyboard keys.

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Explanation: n Excel, letters denote the column identifier of a cell, meaning they indicate which vertical column a cell belongs to on a spreadsheet; when combined with a row number, they create a complete cell reference (e.g., “A1” refers to the cell in column A, row 1).

Explanation: The .xls extension is used for Microsoft Excel spreadsheets. XLS is a legacy file extension that was used for Excel worksheets from 1997 to 2003. Explanation XLS files are proprietary to Microsoft and use a Binary Interchange File Format to store data. XLS files can contain numbers, formulas, text, and drawing shapes. XLSX is the successor to XLS and is based on XML. XLSX was introduced with Office 2007. XLSM is a macro-enabled version of XLSX.

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Explanation: DDR3 dual-inline memory modules (DIMMs) have 240 pins and are electrically incompatible with DDR2.

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Explanation: The starting page of a Website is called the Home page . It is also known as the index page, file name for the first page of the website is index.html or index.php. it is recognized as Home page. First page of website technically termed as Index page(for server). but formally we can termed as Homepage and this page is sometimes called main page as well. Index.htm and default.asp are two of the most common but most web servers can be configured to show any page as the first page which is called Home page.

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Explanation: Servers are computers that provide resources to other computers connected to a Network . A network is a collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to allow data sharing. An example of a network is the Internet, which connects millions of people all over the world. A computer or device that provides resources and services to other systems connected to the same network is called a server. Based on the services provided, there are different types of servers like application server, web server, mail server, file server, etc. A server is a piece of computer hardware or software that provides functionality for other programs or devices, called “clients”. This architecture is called the client-server model.