Which of the following is an essential file of a MS-DOS boot disk?


Options: COMMAND.COM B. START.COM C. TREE.COM D. VER.COM

Ans: A ,COMMAND.COM






More Disc Operating System (DOS) Related questions:


  Dedicated Computer means
Options: Doesn’t have OS B. Used by single person C. Assigned to one and only one task D. All of Above

Ans:– C ,


A channel for communicating across a boundary between two or more sub¬systems is known as
Options: interface,    actigram,    walk through,    data path

Ans:B ,B


Marketing planning is concerned with
Options: planning the amount and placement of newspaper ads,    planning consignment sales contracts to be offered,    planning sales force size and deployment,    All of the above

Ans:D ,D


A storage area used to store data to compensate for the difference in speed at which the different units can handle data is
Options: Memory,    Buffer,    Accumulator,    Address

Ans:B ,B


The most common security failure is
Options: carelessness by users,    depending on passwords,    too much emphasis on preventing physical access,    insufficient technology used to prevent breaches

Ans:A ,A


.   Which of the following fill effects can you use for the slide background?
Options: a. Gradient b. Texture c. Picture d. All of the above

Ans:7 – D ,7 – D


.    Which command displays the directory list including files in tree structure?
Options: a.    Dir/s/f b.    Tree/f c.    Tree/s/f d.    Dir/f

Ans:. b,Correct Answer: b. Tree/f


. 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


Which of the following is not the Section Break Option?
Options: a. Next Page b. Previous Page c. Odd Page d. Even Page

Ans:–  B,–  B


. ….is an intermediate storage for deleted files
Options: a. My computer b. My documents c. Recycle bin d. None of above

Ans:1 – c ,1 – c


What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W?
Options: 77.7 ohm,    89.3 ohm,    88.8 ohm,    224 ohm

Ans:B ,B


The 2's complement of a binary no. is obtained by adding.....to its 1's complement.
Options: 0 ,    1,    10,    12

Ans:B,(Banswer


A compiler is
Options: a program that places programs into memory and prepares them for execution,    a program that automate the translation of assembly language into machine language,    program that accepts a program written in a high level language and produces an object program,    is a program that appears to execute a source program as if it were machine language

Ans:C ,C


The range of frequencies available for data transmission is known as
Options: Baud,    Bandwidth,    Byte,    Bits

Ans:B ,B


On a systems flowchart, the online manual keeping of input data is identified by using the
Options: online storage symbol,    Online keyboard symbol,    keeping operation symbols,    manual operation symbols

Ans:B ,B


A key verifier machine is used In controlling
Options: transaction entry,    data communication,    computer processing,    transaction origination

Ans:A ,A


A system analyst designs a new system by
Options: identifying sub systems and the interfaces between sub systems,    adopting a developed system to the present environment,    developing the system as a large, single unit,    propose alternatives to the current system

Ans:A ,A


Which of the following modifications may not succeed?
Options: Changing a column data type from char to date,    Changing a column data type from numeric to char,    Both of the above actions should succeed.,    Neither of the above actions will succeed.

Ans:A ,A


Which is not true of a correlated subquery?
Options: EXISTS/NOT EXISTS is a form of a correlated subquery.,    The processing of the SELECT statements is nested.,    They can be used to verify functional dependencies.,    They are very similar to a regular subquery.

Ans:D ,D


. What does an inner join display?
Options: a. Records from the second recordset and only records from the first recordset where the common fields are equal b. Records from the first recordset and only records from the second recordset where the common fields are equal c. Records that have the same value in the common field d. Records from the first recordset only

Ans:8 – c ,8 – c


Which device is used to backup the data?
Options: Floppy Disk B. Tape C. Network Drive D. All of the above

Ans:– D ,


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):
Options: transitive dependency.,    insertion anomaly.,    referential integrity constraint.,    normal form.

Ans:C ,C


DOS system file consists of
Options: a. IBMBIO.COM, IBMDOS.COM, COMMAND.COM b. COMMAND.COM, IBMBIO.COM, FORMAT.COM c. SYS.COM,IBMBIO.COM,IBMDOS.COM d. None of the above

Ans:10 a.             ,10 a.            


Which of the following is true when describing a multicast address?
Options: Packets addressed to a unicast address are delivered to a single interface.,    Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.,    Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.,    These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

Ans:B ,B


The EIA-232 interface has _____ pins.
Options: 20,    24,    25,    30

Ans:C ,C


The most important advantage of a video disk is
Options: Compactness,    Potential capacity,    Durability,    Cost effectiveness

Ans:B ,B


Which of the following is not used as secondary storage
Options: Semiconductor memory,    Magnetic disks,    Magnetic drums,    Magnetic tapes

Ans:A ,A


. Who invented Integrated Circuits?
Options: A) Jack Kilby B) Robert Noyce C) Both of above D) None of above

Ans:C,C


This key uniquely identifies each record
Options: a. primary key b. key record c. unique key d. field name

Ans:ndash; a,ndash; a


. Before moving a subdocument to another location within a master document, you must switch to _________
Options: a. Normal View b. Outline View c. Web Layout View d. Print Layout View

Ans: –  B , –  B


When the time to establish link is large and the size of data is small, the preferred mode of data transfer is
Options: Circuit switching,    Packet switching,    Time division multiplexing,    All of the above

Ans:B ,B


On-line data entry is most suitable in the case of
Options: updating payroll master,    entering monthly journal entries,    Processing payment of cheque in a bank,    All of the above

Ans:C ,C


The modern enterprise is interconnected internally and externally by the Internet, intranets, and other networks. Select the best fit for answer:
Options: Internetworked enterprise,    Information super highway,    Business applications of telecommunications,    Client/Server networks

Ans:A ,A


Processors of all computers, whether micro, mini or mainframe must have 
Options: a. ALU b. Primary Storage c. Control unit d. All of above

Ans:1.d,1.d


A public key encryption system
Options: allows anyone to decode the transmission,    allows only the correct sender to decode the data,    allows only the correct receiver to decode the data,    does not encode the data before transmitting it

Ans:C ,C


An oval represents which of the following in an ERD?
Options: Attribute,    Entity,    Optional One,    Relationship

Ans:A ,A


1024 bytes represent a
Options: Megabyte,    Gigabyte,    Kilobyte,    None of the above

Ans:C,C


Paging
Options: is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.,    consists of those addresses that may be generated by a processor during execution of a computation.,    is a method of allocating processor time.,    allows multiple programs to reside in separate areas of core at the time.

Ans:A ,A


The symbols used in an assembly language are
Options: Codes,    Mnemonics,    Assembler,    All of the above

Ans:B ,B


. In Windows,start button is used to
Options: a. Run applications b. Device setting c. Turn off the system d. All of above

Ans: d, d


For an algorithm the complexity of the average case is
Options: A)Much more complicated to analyze than that of worst case b.Much more simpler to analyze than that of worst case c.Sometimes more complicated and some other times simpler than that of worst case d.None or above

Ans:A,


. The information stored in storage devices can be accessed in _________
Options: RAM access & ROM access B. Memory access & Disk access C. Random access & shift access D. Sequential access & Direct access

Ans:– D ,


You cannot link excel worksheet data to a word document
Options: a. With the right drag method b. With a hyperlink c. With the copy and paste special commands d. With the copy and paste buttons on the standard toolbar.

Ans:#8211; d,#8211; d


Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.
Options: P I (K + 1),    KIK (1 + F),    1/ (1 - F),    K I (K - P)

Ans:C ,C


A data dictionary is a special file that contains
Options: the names of all fields in all files,    the data types of all fields in all files,    the widths of all fields in all files,    All of the above

Ans:D ,D


A number of related records that are treated as a unit is called
Options: file,    field,    data,    batch

Ans:A ,A


Name of the first guided weapon in the world which used a programmable digital computer:
Options: Sting Ray Torpedo,    Mk 46 Torpedo,    Air-Launched Cruise Missile (ALCM),    Tomahawk Missile

Ans:A,A


The register or main memory location which contains the effective address of the operand is known as
Options: pointer,    indexed register,    special location,    scratch pad

Ans:A ,A


Which of the following is not process states?
Options: New B. Running C. Ready D. Finished

Ans:– D ,


In LISP, the function evaluates <object> and assigns this value to the unevaluated <sconst>.
Options: (constant <sconst> <object>),    (defconstant <sconst> <object>),    (eva <sconst> <object>),    (eva <object> <sconst>)

Ans:B ,B

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