Explore topic-wise MCQs in Engineering.

This section includes 4320 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

3751.

The primary memory of a personal computer consists of:

A. ROM only
B. RAM only
C. Both ROM and RAM
D. Memory module
E. None of the above
Answer» D. Memory module
Discussion
3752.

How many bytes are there in 1011 1001 0110 1110 numbers?

A. 1
B. 2
C. 4
D. 8
E. None of the above
Answer» C. 4
Discussion
3753.

The _____ gate has two or more input signals. All inputs must be high to get a high output

A. OR
B. NAND
C. AND
D. NOR
E. None of the above
Answer» D. NOR
Discussion
3754.

Which of the following logic expression is wrong?

A. 1 + 0=1
B. 1 + 1=0
C. 1+0+1 = 1
D. 1 + 1 + 1 = 1
E. None of the above
Answer» D. 1 + 1 + 1 = 1
Discussion
3755.

A NOR gate recognizes only the input word whose bits are _____

A. 0's and 1's
B. 1's
C. 0's
D. 0's or 1's
E. None of the above
Answer» D. 0's or 1's
Discussion
3756.

Binary-Coded-decimal (BCD) numbers express each digit as a _____

A. byte
B. nibble
C. bit
D. All of the above
E. None of the above
Answer» C. bit
Discussion
3757.

Computers use thousands of flip-flops. To coordinate the overall action, a common signal called the _____ is sent to each flip-flop.

A. latch
B. clock
C. master
D. slave
E. None of the above
Answer» C. master
Discussion
3758.

The 2's compliment of binary number 0.01011 is:

A. 1.10101
B. 0.10101
C. 1.10100
D. 0.10100
E. None of the above
Answer» B. 0.10101
Discussion
3759.

Parallel adders are

A. combinational logic circuits
B. sequential logic circuits
C. both of the above
D. All of the above
E. None of the above
Answer» B. sequential logic circuits
Discussion
3760.

A microcomputer is a computer that uses a _____ for its CPU.

A. chips
B. registers
C. microprocessor
D. vacuum tube
E. None of the above
Answer» D. vacuum tube
Discussion
3761.

In SQL, the CREATE TABLESPACE is used

A. to create a place in the database for storage of scheme objects, rollback segments, and naming the data files to comprise the tablespace
B. to create a database trigger
C. to add/rename data files, to change storage
D. All of the above
E. None of the above
Answer» B. to create a database trigger
Discussion
3762.

In SQL, which command is used to remove a stored function from the database?

A. REMOVE FUNCTION
B. DELETE FUNCTION
C. DROP FUNCTION
D. ERASE FUNCTION
E. None of the above
Answer» D. ERASE FUNCTION
Discussion
3763.

The database administration function includes

A. application programming
B. computer operations management
C. database access planning
D. All of the above
E. None of the above
Answer» D. All of the above
Discussion
3764.

A relational database management (RDBM) package manages data in more than one file at once. How does it organize these file? As

A. tables
B. relations
C. tuple
D. both (a) and (b)
E. None of the above
Answer» E. None of the above
Discussion
3765.

In SQL, which command is used to select only one copy of each set of duplicable rows

A. SELECT DISTINCT
B. SELECT UNIQUE
C. SELECT DIFFERENT
D. All of the above
E. None of the above
Answer» B. SELECT UNIQUE
Discussion
3766.

The master list of an indexed file

A. is sorted in ascending order
B. contains only a list of keys and record numbers
C. has a number assigned to each record
D. both (b) and (c)
E. None of the above
Answer» D. both (b) and (c)
Discussion
3767.

The physical location of a record is determined by a mathematical formula that transforms a file key into a record location in

A. a tree file
B. an indexed file
C. a hashed file
D. a sequential file
E. None of the above
Answer» D. a sequential file
Discussion
3768.

Data encryption techniques are particularly useful for

A. reducing storage space requirements
B. improving data integrity
C. protecting data in data communication systems
D. All of the above
E. None of the above
Answer» D. All of the above
Discussion
3769.

A logical schema

A. is the entire database
B. is a standard way of organizing information into accessible parts
C. describes how data is actually stored on disk
D. All of the above
E. None of the above
Answer» C. describes how data is actually stored on disk
Discussion
3770.

Queries to a database

A. are written in English
B. can use aggregate functions like SUM and COUNT
C. both (a) and (b)
D. All of the above
E. None of the above
Answer» C. both (a) and (b)
Discussion
3771.

Which of the following is not true of the traditional approach to information processing?

A. There is common sharing of data among the various applications
B. It is file-oriented
C. Programs are dependent on the files
D. It is inflexible
E. All of the above are true
Answer» B. It is file-oriented
Discussion
3772.

Batch processing is appropriate if

A. a large computer system is available
B. only a small computer system is available
C. only a few transactions are involved
D. All of the above
E. None of the above
Answer» F.
Discussion
3773.

A data dictionary is a special file that contains

A. the names of all fields in all files
B. the data types of all fields in all files
C. the widths of all fields in all files
D. All of the above
E. None of the above
Answer» E. None of the above
Discussion
3774.

What is the abbreviation used for a software package that permits the users to create, retrieve and maintain records in a database?

A. DASD
B. FMS
C. EMMS
D. DBMS
E. None of the above
Answer» E. None of the above
Discussion
3775.

A form can be used to

A. modify records
B. delete records
C. format printed output
D. All of the above
E. None of the above
Answer» E. None of the above
Discussion
3776.

Related fields in a data base are grouped to form

A. data file
B. data record
C. menu
D. bank
E. None of the above
Answer» C. menu
Discussion
3777.

Which of the following is not an advantage of the data-base approach?

A. elimination of the data redundancy
B. ability to associate related data
C. increased security
D. program/data independence
E. All of the above are advantages
Answer» F.
Discussion
3778.

A _____ means that one record in a particular record type can be related to many records in another record type and vice-versa.

A. One-to-one relationship
B. One-to-many relationship
C. Many-to-one relationship
D. Many-to-many relationship
E. None of the above
Answer» E. None of the above
Discussion
3779.

In SQL, the _____ command is used to recompile a view

A. COMPILE VIEW
B. DEFINE VIEW
C. CREATE VIEW
D. ALTER VIEW
E. None of the above
Answer» E. None of the above
Discussion
3780.

A list in alphabetical order

A. is in descending order
B. is in ascending order
C. is the result of a sort operation
D. both (b) and (c)
E. None of the above
Answer» E. None of the above
Discussion
3781.

Embedded pointer provide

A. a secondary access path
B. a physical record key
C. an inverted index
D. All of the above
E. None of the above
Answer» B. a physical record key
Discussion
3782.

Data items grouped together for storage purposes are called a

A. record
B. title
C. list
D. string
E. None of the above
Answer» B. title
Discussion
3783.

If a piece of data is stored in two places in the database, then

A. storage space is wasted
B. changing the data is one spot will cause data inconsistency
C. it can be more easily accessed
D. both (a) and (b)
E. None of the above
Answer» E. None of the above
Discussion
3784.

When not in use, it is very important to keep 5 VA diskettes in _____.

A. Their protective sleeves
B. In a plastic bag
C. On a shelf in an upright position
D. In the floppy drive
E. None of the above
Answer» B. In a plastic bag
Discussion
3785.

Which of the following is a type of DBMS software?

A. database manipulation language
B. query language
C. utilities
D. report writer
E. All of the above
Answer» B. query language
Discussion
3786.

The activity of a file

A. is a low percentages of number of records added or deleted from a file
B. if high, reduces processing efficiency for sequential and nonsequential files
C. is a measure of the percentage of existing records updated during a run
D. refers to how closely the files fits into the allocated
E. None of the above.
Answer» B. if high, reduces processing efficiency for sequential and nonsequential files
Discussion
3787.

A multiple-form file management system

A. lets you define different forms for different operations
B. lets you create a look-up form with an associated read-only password to prevent access by unauthorized users
C. both (a) and (b)
D. allow you to entry data in all the forms
E. None of the above
Answer» D. allow you to entry data in all the forms
Discussion
3788.

The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types.

A. Database
B. Table
C. Flat file
D. Data structure
E. None of the above
Answer» D. Data structure
Discussion
3789.

ESD damage can be caused by:

A. Placing an IC in a non-conductive plastic bag
B. Placing an IC on a grounded mat
C. Repeated sags in current supplied from outlets
D. Touching metal on the chasis
E. None of the above
Answer» B. Placing an IC on a grounded mat
Discussion
3790.

The standard VGA display has _____ pixels in its native graphics mode?

A. 648 x 320
B. 640 x 480
C. 680 x 440
D. 1024 x 786
E. None of the above
Answer» C. 680 x 440
Discussion
3791.

Which is NOT typically a Field Replaceable Unit?

A. System ROM
B. Power supply
C. System chasis
D. Video controller
E. None of the above
Answer» D. Video controller
Discussion
3792.

A human cannot feel a static discharge as high as _____ volts.

A. 200
B. 2000
C. 10000
D. 50000
E. 50
Answer» B. 2000
Discussion
3793.

COM 4 uses which I/O port?

A. 2F8H
B. 3F8H
C. 3E8H
D. 2E8H
E. None of the above
Answer» E. None of the above
Discussion
3794.

What type of FRU is a SCSI host adapter?

A. CPU
B. I/O card
C. video card
D. hard drive
E. None of the above
Answer» C. video card
Discussion
3795.

How many DMA channels are in an AT-machine?

A. 3
B. 4
C. 7
D. 8
E. None of the above
Answer» C. 7
Discussion
3796.

You are testing the resistance in Ohms of a fuse on a 5 amp system. If the fuse is good, the meter should read?

A. 5.0
B. 0.5
C. 0.0
D. All of the above
E. None of the above
Answer» D. All of the above
Discussion
3797.

What allows you to print on both sides of the printer?

A. fuser
B. duplexer
C. toner cartridge
D. paper-swapping unit
E. None of the above
Answer» C. toner cartridge
Discussion
3798.

The acronym HDI stands for:

A. Half duplex interface
B. Hard disk interface
C. Head to disk interference
D. Help desk interference
E. None of the above
Answer» E. None of the above
Discussion
3799.

Which I/O port belongs to LPT2?

A. 378H
B. 278H
C. 3f8h
D. 2e8h
E. None of the above
Answer» C. 3f8h
Discussion
3800.

What resistence in ohms should be displayed ehen testing a speaker in a computer?

A. 0 Ohms
B. 16 Ohms
C. -200 Ohms
D. Unlimited Ohms
E. None of the above
Answer» C. -200 Ohms
Discussion