1.A unit of data storage that equals 2 to the 70th power is called?
[A] Zebibyte
[B] Yottabite
[C] Yobibite
[D] None of the above
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< p> 2.Structured Query Language (SQL) is used in the following?
[A] Create Databases
[B] Create & Modify Databases
[C] Create, Modify & Query Databases
[D] None of the above
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Explanation: Structured Query Language (SQL) is a standard computer language for relational database management and data manipulation. SQL is used to create, modify and query Databases. ©navclasses
3.What is the name of the digital circuit that performs arithmetic and logical operations in computers?
[A] Arithmetic Logic Unit
[B] Digital comparator
[C] Multiplexer
[D] None of these
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Explanation: An arithmetic-logic unit (ALU) is the part of the circuit that performs Arithmetic nad logical operations. It is the part of a computer processor (CPU). In some processors, the ALU is divided into two units, an arithmetic unit (AU) and a logic unit (LU). ©navclasses
4.ADSL data communications technology uses which of the following for faster data transmission?
[A] Voiceband modem
[B] Wireless Modem
[C] Copper telephone Lines
[D] Sockets
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Explanation: Asymmetric digital subscriber line (ADSL) is a type of digital subscriber line (DSL) technology. It is a data communications technology that enables faster data transmission using copper telephone lines than a conventional voiceband modem can provide. ©navclasses
5.While working on Microsoft Word, which among the following is the command for “Undo”?
[A] Cntrl +A
[B] Cntrl +Z
[C] Cntrl +Y
[D] Cntrl +C
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Explanation: Undo is an interaction technique which is implemented in many computer programs. Cntrl +Z is the is for Undo in Microsoft word. ©navclasses
6.Which of the following is a suitable term for any programmable content of a hardware device configurations and data for application-specific integrated circuits (ASICs), programmable logic devices, etc?
[A] Hardware
[B] Software
[C] Firmware
[D] Malware
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Explanation: A firmware refers to a computer programme which is “embedded” in a hardware device and is an essential part of the hardware. It is sometimes also called embedded software. One example is a TV remote set which has a software embedded that can understand and control the TV. TV itself has its own firmware on its motherboard. ©navclasses
8.Which among the following is the time period during which a computer is malfunctioning or not operating correctly due to machine failures?
[A] Down time
[B] Up time
[C] Response time
[D] Run time
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Explanation: Downtime is the time period when a system is unavailable. Downtime or outage duration refers to a period of time that a system fails to perform its primary function. ©navclasses
9.In the Windows XP, what does XP stands for?
[A] Extra-Powerful
[B] Experience
[C] Extended Platform
[D] Experience Platform
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Explanation: Windows XP is an operating system introduced in 2001. It is from Microsoft’s Windows. The “XP” in Windows XP stands for eXPerience. Microsoft called the XP release its one of the most important product. ©navclasses
10.Modern computers follow a generalised set of instructions to perform any function. What are these instructions better known as?
[A] Language
[B] Instructions
[C] Commands
[D] Programs
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Explanation: Computers follow a generalised set of instructions to perform various functions. These are known as programs. These let the computers to perform a huge range of tasks. ©navclasses