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Objective Questions

Latest TN TRB Lecturers CSE Exam Question (Objective Questions), MCQ in English

Subjects : Computer Science, General Knowledge

Question Bank TN TRB Computer Science Exam - English
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Computer Science

Question 1Single Answer
When two number are added in excess-3 code and the sum is less than 9 , then in order to get the correct answer it is necessary to
  1. A
    subtract 0011 from the sum
  2. B
    add 0011 to the sum
  3. C
    subtract 0110 from the sum
  4. D
    add 0110 to the sum
Question 2Single Answer
The characteristic equation of an SR filp-flop is given by
  1. A
    Qn+1 = S+RQn          
  2. B
    Qn+1 = S n+   Qn 
  3. C
    Qn+1 =  + RQn  
  4. D
    Qn+1 = S+ Qn 
Question 3Single Answer
A graph with n vertices and n-1 edges that is not a tree , is
  1. A
    Connected 
  2. B
    disconnected
  3. C
    Euler  
  4. D
    A circuit
Question 4Single Answer
Networks that use different technologies can be connected by using
  1. A
    Packets
  2. B
    Switches
  3. C
    Bridges
  4. D
    Routers
Question 5Single Answer
A read bit can be read
  1. A
    and written by CPU
  2. B
    and written by peripheral
  3. C
    by peripheral and written by CPU
  4. D
    by CPU and written by the peripheral
Question 6Single Answer
The term ‘aging’ refers to
  1. A
    booting up the priority of the process in multi-level of queue without  feedback  .
  2. B
    gradually increasing the priority of job that wait in the system for a long  time to remedy infinite booking .
  3. C
    keeping track of the following a page has been in memory for the purpose of LRU replacement .
  4. D
    letting jobs reside in memory for a certain amount of time so that the no pages required can be estimated accurately
Question 7Single Answer
Consider a set of n tasks with known runtimes r1 ,r2………….. rn  To be run on a uni processor machine . Which of the following processer scheduling algorithms will result in the maximum throughput ?
  1. A
    Round Robin
  2. B
    Shortest job first
  3. C
    Highest response ratio first
  4. D
    First come first served
Question 8Single Answer
Consider a job scheduling program with 4 jobs J1 , J2, J3 and J4  With corresponding deadlines : (d1 , d2 , d3 , d4) = (4, 2, 4, 2). Which of the following is not a feasible schedule without violating any job schedule?
  1. A
    J2, J4, J1, J3       
  2. B
    J4, J1, J2, J3
  3. C
    J4, J2, J1, J3   
  4. D
    J4, J2, J3, J1
Question 9Single Answer
By using a eight bit optical encoder the degree of resolution that can be obtained is (approximately)
  1. A
    1.8o       
  2. B
    3.4 o
  3. C
    2.8 o   
  4. D
    1.4 o
Question 10Single Answer
The principal of the locality of reference justifies the use of
  1. A
    virtual memory            
  2. B
    interrupts
  3. C
    main memory    
  4. D
    cache memory
Question 11Single Answer
Consider the following pseudo-code
x ; = 1;
I ; = 1;
While (x,=1000) begin
x ; =2x;
i ; = i+1;end;
what is the value of I at the end of the pseudo-code
  1. A
    4        
  2. B
    5  
  3. C
    6             
  4. D
    7
Question 12Single Answer
The five items : A, B, C, D and E are pushed in  stack, one after other starting from A. The stack is popped four items and each element is inserted in a queue . The two element are deleted from the queue and pushed back on the stack, Now one item is popped from the stack . The popped item is
  1. A
    A         
  2. B
    B           
  3. C
    C  
  4. D
    D
Question 13Single Answer
Round Robin schedule is essentially the pre-emptive version of
  1. A
    FIFO
  2. B
    Shortest job first
  3. C
    Shortest remaining time
  4. D
    Longest remaining time
Question 14Single Answer
The number of digit 1 present in the binary representative of 3 x 512 + 7 x 6 + 5 x 8 + 3 ? is
  1. A
    8      
  2. B
    9     
  3. C
    10          
  4. D
    12
Question 15Single Answer
Assume that each character code consists of 8 bits. The number of characters that can be transmitted per second through an synchronous serial line at 2400 baud rate, and with two stop bits is
  1. A
    109      
  2. B
    216          
  3. C
    218           
  4. D
    219
Question 16Single Answer
If the bandwidth of a single is 5 kHz and the lowest frequency is 52 kHz, what is the highest frequency
  1. A
    5 kHz  
  2. B
    10 kHz 
  3. C
    I47 kHz 
  4. D
    57 kHz
Question 17Single Answer
An Ethernet hub
  1. A
    Function as a repeater
  2. B
    Connects to a digital PBX
  3. C
    Connects to a token-ring network
  4. D
    Function as a gateway
Question 18Single Answer
Which of the following is an illegal array definition?
Type COLONGE: (LIME, PINE, MUSK, MENTHOL):
  1. A
    var a: array (COLONGE) or REAL;
  2. B
    var a:  array [REAL] of REAL;
  3. C
    var a: array [‘A’……..’Z’] of REAL;
  4. D
    var a: array [BOOLEAN] of REAL;
Question 19Single Answer
The team phong associated with
  1. A
    Ray tracing
  2. B
    Shading
  3. C
    Hiddenline removal
  4. D
    a game
Question 20Single Answer
The Boolean expression is given by
  1. A
    A      
  2. B
    B      
  3. C
       
  4. D
    AB
Question 21Single Answer
The subnet mask 255.255.255.192
  1. A
    extends the network portion to 6 bits
  2. B
    extends the network portion to 26 bits
  3. C
    extends the network portion to 36 bits
  4. D
    has no effects on the network portion of an IP address 
Question 22Single Answer
On a LAN, where are IP datagram transported?
  1. A
    In the LAN header
  2. B
    In the application field
  3. C
    In the information field of the LAN frame
  4. D
    After the TCP header 
Question 23Single Answer
In Ethernet, the source address field in the MAC frame is the ____ address.
  1. A
    Original sender’s physical
  2. B
    Previous station’s physical
  3. C
    Next destination’s physical
  4. D
    Original sender’s service port 
Question 24Single Answer
Which of the following transmission media is not readily suitable to CSMA operation?
  1. A
    Radio                                    
  2. B
    Optical fibers
  3. C
    Coaxial cable    
  4. D
    Twisted pair 
Question 25Single Answer
The postfix expression AB + CD – * can be evaluated using a
  1. A
    stack
  2. B
    tree
  3. C
    queue
  4. D
    linked list
Question 26Single Answer
Both hosts and routers are TCP/IP protocol software. However, routers do not use protocol from all layers. The layer for which protocol software is not needed by a router is
  1. A
    Layer – 5 (Application)
  2. B
    Layer – 1 (Physical)
  3. C
    Layer – 3 (Internet)
  4. D
    Layer – 2 (Network Interface)
Question 27Single Answer
Phase transition for each it are used in
  1. A
    Amplitude modulation
  2. B
    Carrier modulation
  3. C
    Manchester encoding
  4. D
    NRZ encoding
Question 28Single Answer
The TCP sliding window
  1. A
    Can be used to control the flow of information
  2. B
    always occurs when the field value is 0
  3. C
    always occurs  when the field value is 1
  4. D
    occurs horizontal
Question 29Single Answer
Study the following program
// precondition: x. =0
Public void demo (int x)
{    System. out. print(x%10)
If ((x/10 ) ! = 10)
{
Demo (x/10) ;
}
System. outsprint (x % 10)
}
Which of the following is printed as a result of the call demo (1234)?
  1. A
    1441   
  2. B
    3443     
  3. C
    12344321          
  4. D
    43211234
Question 30Single Answer
Of the following sort algorithms, which has execution time that is least dependent on initial ordering of the input ?
  1. A
    Insertion sort
  2. B
    Quick sort
  3. C
    Merge sort
  4. D
    Selection sort
Question 31Single Answer
What is the bandwidth of the signal that ranges from 40 kHz 4 kHz
  1. A
    36MHz    
  2. B
    360 kHz
  3. C
    3.96mHz      
  4. D
    396 MHz
Question 32Single Answer
If there are five routers and six network in intranet using link state routing, how many routing tables are there ?
  1. A
    1   
  2. B
    5      
  3. C
    6           
  4. D
    11
Question 33Single Answer
virtual memory is
  1. A
    Part of Main Memory only used for swapping
  2. B
    A technique to allow a program, of size more than the size of main memory, to run
  3. C
    Part of secondary storage used in program execution
  4. D
    none of these
Question 34Single Answer
The level of aggregation of information required for operational control is
  1. A
    Detailed     
  2. B
    Aggregate
  3. C
    Qualitative   
  4. D
    None of these
Question 35Single Answer
Which Project 802 standard provides for a collision-free protocol?
  1. A
    802.2              
  2. B
    802.3
  3. C
    802.5             
  4. D
    802.6
Question 36Single Answer
The set of all Equivalence Classes of a set A of Cardinality C
  1. A
    is of cardinality 2C
  2. B
    have the some cardinality as A
  3. C
    forms a partition of A
  4. D
    is of cardinality c2
Question 37Single Answer
0.75 decimal system is equivalent to ………. In octal system.
  1. A
    0.60    
  2. B
    0.52      
  3. C
    0.54          
  4. D
    0.50
Question 38Single Answer
In an SR latch made by cross-coupling two NAND gates, if both S and R inputs are set to 0, then it will result in
  1. A
    Q = 0, Q’ = 1
  2. B
    Q = 1, Q’ = 0
  3. C
    Q = 1, Q’ = 1
  4. D
    Indeterminate states
Question 39Single Answer
Identify the correct translation into logical notation of the following assertion. Some boys in the class are taller than all girls  Note: taller (x,y) is true if x is taller then y.
  1. A
  2. B
  3. C
  4. D
Question 40Single Answer
Company X shipped 5 computer chips, 1 of which was defective, and company Y shipped 4 computer chips, 2 of which were defective. One computer chip is to be chosen uniformly at a random from the 9 chips shipped by the companies. If the chosen chips is found to be defective, what is the probability that the chip came from the company Y?
  1. A
    2
    9
  2. B
    4
    9
  3. C
    2
    3
  4. D
    1
    2
Question 41Single Answer
The 0 and 1 in the binary numbering system are called Binary Digits or
  1. A
    Bytes      
  2. B
    Kilobytes
  3. C
    Decimal bytes
  4. D
    Bits          
Question 42Single Answer
What language does a browser typically interpret to display information from the World Wide Web ?  
  1. A
    Machine Code
  2. B
    Assembly Language
  3. C
    HTML
  4. D
    C++  
Question 43Single Answer
______ is the process of finding errors in software code.
  1. A
    Compiling
  2. B
    Testing
  3. C
    Running
  4. D
    Debugging
Question 44Single Answer
The code for a Web page is written using _________.
  1. A
    A fifth generation language
  2. B
    WinZip
  3. C
    Peripherals
  4. D
    Hypertext Markup Language
Question 45Single Answer
A program is a sequence of ___________ written in a programming language.
  1. A
    Lines
  2. B
    Function
  3. C
    Instructions
  4. D
    Code words    
Question 46Single Answer
Which of the following languages is more suited to a structured program ?
  1. A
    PL/1
  2. B
    FORTRAN
  3. C
    BASIC
  4. D
    PASCAL
Question 47Single Answer
A computer program that converts assembly language to machine language to machine language is
  1. A
    compiler
  2. B
    Interpreter
  3. C
    Assembler
  4. D
    None of the above
Question 48Single Answer
The symbols used in an assembly language are
  1. A
    Codes
  2. B
    Mnemonics
  3. C
    Assembler
  4. D
    All of the above      
Question 49Single Answer
Which is a non-standard version of a computing language ?
  1. A
    PROLOG
  2. B
    APL
  3. C
    Army
  4. D
    PL/1
Question 50Single Answer
A language which is close to that used with in the computer is
  1. A
    High – level language
  2. B
    Assembly language
  3. C
    Low- level language
  4. D
    All of the above      
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