Computer Awareness MCQs | Computer Multiple Choice Questions with Answers

Answer: CMOS

Sol. The CMOS is a physical part of the motherboard: it is a memory chip that houses setting configurations and is powered by the onboard battery. The CMOS is reset and loses all custom settings in case the battery runs out of energy, additionally, the system clock resets when the CMOS loses power.

Answer: Half-duplex

Sol. Half Duplex support two-way traffic but in only one direction of a time. For example, a walkie-talkie is a half-duplex device because only one party can talk at a time. In contrast, a telephone is a full-duplex device because both parties can talk simultaneously.

Answer: Recycle bin

Sol. Files deleted from the hard disk sent to the recycle bin.

Answer: Only (b) and (c)

Sol. STP and UTP are type of Twisted Pair Cable which are mostly used in all Networks.

Answer: Spur-of-the-moment question

Sol. An Ad-Hoc Query is a query that cannot be determined prior to the moment the query is issued. It is created in order to get information when need arises and it consists of dynamically constructed SQL which is usually constructed by desktop-resident query tools.

Answer: 12

Sol. Dr Edgar F. Codd, after his extensive research on the Relational Model of database systems, came up with twelve rules of his own, which according to him, a database must obey in order to be regarded as a true relational database.

Answer: You can see all pages of your document

Sol. In page preview mode you can preview all the pages of the document.

Answer: Topology

Sol. Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network. There are two basic categories of network topologies: Physical topologies and Logical topologies.

Answer: Bookmark

Sol. A bookmark is a saved shortcut that directs your browser to a specific webpage. It stores the title, URL, and favicon of the corresponding page.

Answer: Tables

Sol. Relational database is a collection of Relations or Table. A table is also known as relation in RDBMS. Fields are the column of the relation or tables. Records are each row in relation. Keys are the constraints in a relation.

Answer: Column

Sol. Attribute may refer to columns in a table and tuple refers to rows in a table.

Answer: Schema, Instance

Sol. Instance is an instance of time and schema is a representation.

Answer: Category of information

Sol. A field is category of information.

Answer: Super key

Sol. Super key is a set of one or more attributes taken collectively to uniquely identify a record.

Answer: Data model

Sol. A Data Model is a logical structure of Database. Data model is an abstract model that describes, how the data are organized and represented.

Answer: DB2

Sol. DB2 is a database product from IBM. It is a Relational Database Management System (RDBMS). DB2 is designed to store, analyze and retrieve the data efficiently.

Answer: File Management System

Sol. Earlier File Management Systems were used, before the usage of DBMS.

Answer: Database or Store Manager

Sol. Storage manager is a program module that provides the interface between the low-level data stored in the database and the application programs and queries submitted to the system.The storage manager is responsible to the following tasks: interaction with the file manager;and efficient storing, retrieving and updating of data.

Answer: 10101011

Sol. Binary Numbers use only '0' and '1'.

Answer: Compression

Sol. Compression is the process of reducing the size of a file by encoding its data information more efficiently. By doing this, the result is a reduction in the number of bits and bytes used to store the information.