Control Unit of a digital computer is often called the

Options: Clock,    Nerve center,    ICs,    All of the above



Asked in: KCC-2018   |   JOA 556-2018  |  HRTC JTO-2017

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More Computer Fundamental Related questions:

Which command of DOS is used to sort the file in reverse order?
Options: SORT > filename,    SORT < filename,    SORT/R < filename,    SORT/V < filename

Ans:C ,C

When one must sell a project to management, the most important document he or she can produce is a:
Options: method for financing the project,    summary of the problem,    project evaluation,    procedure for purchase

Ans:C ,C

The physical layer of a network
Options: constructs packets of data and sends them across the network,    controls error detection and correction,    defines the electrical characteristics of signals passed between the computer and communication devices,    All of the above

Ans:C ,C

. Which of the following is a correct order of precedence in a formula calculation?
Options: a. Multiplication and division, exponential positive and negative value b. Multiplication and division, positive and negative values, addition and subtraction c. Addition and subtraction, positive and negative values, exponentiation d. None of above

Ans:– d,– d

SQL*Plus will finish the statement and execute it when the user types in this:
Options: A left slash ( \ ) followed by [Enter].,    A colon ( : ) followed by [Enter].,    A semicolon ( ; ) followed by [Enter].,    A period ( . ) followed by [Enter].

Ans:C ,C

A file organization component of a VSAM file is:
Options: relative record data set,    keyed sequential data set,    entry sequential data set,    all of the above

Ans:D ,D

. Which of the following is extension of notepad?
Options: a. .txt b. .bmp c. .ppt d. .xls

Ans:9 – a ,9 – a

What is the AutoComplete feature of Excel?
Options: It automatically completes abbreviated words B. It completes text entries that match an existing entry in the same column C. It completes text and numeric entries that match an existing entry in the same column D. It completes text entries that match an existing entry in the same worksheet

Ans:– B ,

. You can open the scenario Manager dialog box by choosing scenarios from the ….. menu.
Options: a. View b. Insert c. Format d. Tools

Ans:– d,– d

The processes at the most detailed level of the data flow diagrams are called
Options: transform descriptions,    functional primitives,    data flows,    interfaces

Ans:B ,B

After typing header text, how can you quickly enter footer text?
Options:  A) Press PageDown key and type the text for footer, B) Click on Switch between Heder & Footer then type the text, C) Both of above, D) None of above,

Ans:C,Both of above

. A program in execution is called
Options: a. A Paging b. A Process c. A virtual memory d. A Demand Page

Ans:6 – b ,6 – b

A typical NC system has which of the following components?
Options: Controller,    Tape input,    Machine tool,    All of the above

Ans:D ,D

The output will be a LOW for any case when one or more inputs are zero in a(n):
Options: OR gate,    NOT gate,    AND gate,    NAND gate

Ans:C ,C

. What is the use of Document Map?
Options: a. to quickly format the document b. to quickly print required page c. to quickly navigate the document d. to quickly correct spelling mistakes

Ans: –  C , –  C

____________ has the shortest access times.
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The concept of a general CAD system was that it should provide:
Options: A system for handling user actions.,    A system for the operation of applications programming.,    A set of basic system functions and utilities.,    All of the above

Ans:D ,D

Customer credit-granting decisions should be incorporated into the
Options: inventory control system,    accounts receivable systems,    sales order entry system,    sales analysis system

Ans:C ,C

An abstract class is which of the following?
Options: A class that has direct instances, but whose descendants may have direct instances.,    A class that has no direct instances, but whose descendants may have direct instances.,    A class that has direct instances, but whose descendants may not have direct instances.,    A class that has no direct instances, but whose descendants may not have direct instances

Ans:B ,B

Which is true for the digital computer?
Options: It is less accurate than the analog computer,    It represents the decimal numbers through a string of binary digits,    It is used primarily in scientific applications,    Both (a) and (c)

Ans:B ,B

A device that converts mechanical pressure to electrical energy is called a:
Options: piezoelectric device,    solar cell,    photodiode,    nicad cell

Ans:A ,A

Impact printers
Options: strike a ribbon against the paper to produce character images,    include ink-jet and thermal devices,    are more expensive than Laser printers,    use optical technology

Ans:A ,A

A program that converts a high-level language program to a set of instructions that can run on a computer is called a
Options: Compiler,    Debugger,    Editor,    All of the above

Ans:A ,A

At room temperature an intrinsic silicon crystal acts approximately like
Options: a battery,    a conductor,    an insulator,    a piece of copper wire

Ans:C ,C

. The Search tool CANNOT be used on which major Access object?
Options: a. Forms b. Queries c. Reports d. Tables

Ans:2 – c ,2 – c

A computer has no more sense than a light
Options: bulb,    pen,    switch,    pad

Ans:C ,C

You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?
Options: 2,    3,    4,    5

Ans:D ,D

Trailer labels contain
Options: file identification,    retention period,    both (a) and (b),    neither (a) nor (b)

Ans:D ,D

. A(n) __________ is an Extensible Scheme Standard file that is an approved W3C standard design as a basic infrastructure.
Options: a. HTML b. XML c. XSD d. XSL

Ans:7 – c ,7 – c

. Which among the following are the best tools for fixing the errors?
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. Formulas in Excel start with
Options: a. % b. = c. + d. –

Ans:– b,– b

You are working with a network that has the network ID, and you require 25 subnets for your company and an additional 30 for the company that will merge with you within a month. Each network will contain approximately 600 nodes. What subnet mask should you assign?
Options:,,,    255,255.248.0

Ans:E ,E

. Poor response time are usually caused by
Options: a. Process busy b. High I/I rates c. High paging rate d. Any of the above

Ans:9 – d ,9 – d

What command is used to assign only read permission to all three categories of the file'letter'?
Options: chmod u + r, g + r, o - x letter,    chmod ugo = r letter,    chmod a - rw letter,    chmod go + r letter

Ans:B ,B

Error control is needed at the transport layer because of potential errors occurring _____.
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Ans:B ,B

. Dropcap means
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Ans: – D , – D

The command interpreter
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Ans:A ,A

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Before sending data, a modem sends a request to send signal, or RTS.
Options: True,    False,    ,    

Ans:A ,A

When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):
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Ans:C ,C

Which of the following is a popular DOS based spreadsheet package?
Options: a. Word b. Smart cell c. Excel d. Lotus 1-2-3

Ans:#8211; d,#8211; d

Which of the following keys is used to replace a single character with new text?
Options: S,    s,    r,    C

Ans:B ,B

Which of the following statement is incorrect?
Options: The Addresses Resolution Protocol, ARP, allows a host to find the physical address of a target host on the same physical network, given only the target IP address.,    The sender's IP - to- physical address binding is included in every ARP broadcast; receivers update the IP-to-Physical address binding information in their cache before processing an ARP packet.,    ARP is a low-level protocol that hides the underlying network physical addressing, permitting us to assign IP-addresses of our choice to every machine.,    All of the above

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.   Which of the following displays when an image is selected?
Options: a. Add clip art only if it relates to your topic b. Be sure to place at least one clipart image per slide c. Resize the image so it takes up as much space as your text d. A and b

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Which of the following is true about ColdFusion Markup Language (CFML)?
Options: It is stored in .asp files.,    It is executed on the client.,    It does not use tags.,    It allows for coding of custom tags in an HTML file.

Ans:D ,D

. Primary key is
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Ans:– d,– d

. CAD software is most likely to be used by
Options: a. Web designer b. Engineers c. Project Manager d. Magazine Editor

Ans:0 – b ,0 – b

. Which of the following database objects extracts information from one or more tables or queries?
Options: a. Forms b. Queries c. Reports d. Tables

Ans:8 – b ,8 – b

Which Chart can be created in Excel?
Options: Area B. Line C. Pie D. All of the above

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Which is the most widely used semiconductor?
Options: Copper,    Silicon,    Germanium,    All of the above

Ans:B ,B