Introduction To Computer Science And Python Programming

40 Questions | By Zainab123456 | Updated: Mar 21, 2022 | Attempts: 431

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Introduction to Computer Science and Python Programming

Questions and Answers

1.

What is the decimal value of the hexadecimal number 777?
2.

__________ is a way by which we can prevent data interception
- A.
  
  Data decryption
- B.
  
  Data Transmission
- C.
  
  Data Encryption
- D.
  
  Data Automation
3.

Which of the following statements is/are true?
- A.
  
  A megabyte is roughly 1 million characters
- B.
  
  A terabyte can store roughly 1 trillion characters
- C.
  
  A terabyte can store more than just a few books
- D.
  
  All of the above
4.
- Convert 765(octal) to hexadecimal
5.

Convert AD1(hexadecimal) to decimal
6.

Data encryption is __________
- A.
  
  A way by which we can decrypt data
- B.
  
  The process of transforming data into an unintelligible form
- C.
  
  Undoing the transformation of data at the point of reception
- D.
  
  B & C
7.

________ was prominent in 5th generation computers
- A.
  
  Large Scale Integration
- B.
  
  Very Large Scale Integration
- C.
  
  Extremely Large Scale Integration
- D.
  
  A & B
8.

Which of the following statements is/are true?
- A.
  
  A megabyte is roughly 1 million characters
- B.
  
  A terabyte can store roughly 1 trillion characters
- C.
  
  A&B
- D.
  
  None of the above
9.

What is the approximate value of 453 kilobyte in megabyte?
- A.
  
  453
- B.
  
  0.453
- C.
  
  4530
- D.
  
  0.0453
10.

What is the result of the following hexadecimal arithmetic :10240 - 82A3
- A.
  
  1F9D
- B.
  
  843D
- C.
  
  7F9D
- D.
  
  743D
11.

What does an RGB value of (0, 0, 0) represent?
- A.
  
  Black
- B.
  
  White
- C.
  
  Violet
- D.
  
  Yellow
12.

Who is the first female professor of Computer Science in Africa?
- A.
  
  Prof. Adenike Osofisan
- B.
  
  Prof Adebola Osofisan
- C.
  
  Prof. Femi Osofisan
- D.
  
  Prof Adefemi Osofisan
13.

The decision as to what data structures to use in implementing a system is best handled during ______
- A.
  
  Program design
- B.
  
  Maintenance
- C.
  
  System design
- D.
  
  Delivery
14.

One byte has ________ bits.
- A.
  
  8
- B.
  
  4
- C.
  
  5
- D.
  
  8
15.

A ___________ error does not cause the program to abort, but produces incorrect results.
- A.
  
  Syntax
- B.
  
  Runtime
- C.
  
  Logic
- D.
  
  Ende-time
16.

Which of these is not true of abstract data structures
- A.
  
  A queue and a stack have two external pointers
- B.
  
  Python supports dictionaries data structures
- C.
  
  Python supports dictionaries data structures
- D.
  
  A queue is a FIFO data structure
17.

What is the result of the statement:print ("1 + 3 * 2-5")
- A.
  
  "1 + 3 * 2+5"
- B.
  
  7
- C.
  
  8
- D.
  
  1 + 3 * 2-5
18.

Which of the followings is not an example of a linear data structure
- A.
  
  List
- B.
  
  Queue
- C.
  
  Graph
- D.
  
  Arrays
19.

Which of the following lines of code comes from a first generation computer language?
- A.
  
  ADD255(3,10),02B
- B.
  
  00010 1010 1101 0001 1010
- C.
  
  This Total=TotalA + TotalC
- D.
  
  Print("x > 0 and y > 0")
20.

The _____ operation says if and only if all inputs are 1, the output will be 1. The output will be 0 if any of the inputs are 0.
- A.
  
  OR
- B.
  
  NAND
- C.
  
  NOR
- D.
  
  AND
21.

What was the first truly mass auxiliary storage device?
- A.
  
  Hard disk drive
- B.
  
  Magnetic disk drive
- C.
  
  Main memory drive
- D.
  
  Magnetic tape drive
22.

Which of the options A to E gives the correct sequence for the software development methods listed below(i)Specification of needs (ii)Algorithm design (iii)Problem analysis (iv)Documentation (v)Testing and verification (vi)Implementation
- A.
  
  I,ii,iii,iv,v,vi
- B.
  
  I,iii,ii,v,vi,iv
- C.
  
  I,iii,ii,vi,v,iv
- D.
  
  I,ii,iii,v,vi,iv
23.

Suppose x = 1, y = -1, and z = 1. What will be displayed by the following statement?x = 1y = -1z = 1.if x > 0: if y > 0: print("x > 0 and y > 0")elif z > 0: print("x < 0 and z > 0")
- A.
  
  X > 0 and y > 0
- B.
  
  X < 0 and z < 0
- C.
  
  Nothing is displayed
- D.
  
  The program has syntax error and won't run
24.

Analyze the following code.even = Trueif even = True:print("It is even!")
- A.
  
  The program has syntax error in lines 1 and 2
- B.
  
  The program has a syntax error in line 2
- C.
  
  The program runs and displays True
- D.
  
  The program runs and displays It is even!.
25.

Eliminating errors in a program is also called ______ the program
- A.
  
  Debugging
- B.
  
  Modularizing
- C.
  
  Clarifying
- D.
  
  All of the above