1. Which among the following is an appropriate binary conversion for the number 421 (which is of base 10)?
 10101010
 11010100
 10011001
 110100101
 010101010

2. If A and B are two input ends of AND logic gate and AB is the only output. What will be the output if the input is A=1 and B=0?
 1
 0
 101
 01
 10

3. If ∆ represents ‘1’ and ○ represents ‘0’. What will be the one’s complement of - ○∆∆○○∆?
 011001
 100110
 101010
 000000
 111111

4. Following diagram depicts which logic gate?

 NOR gate
 NOT gate
 OR gate
 NAND gate
 None of the above

5. Which of the following is a correctset of hexadecimal digits?
 102n
 a19fk
 ZOLO12
 FACE
 0101xx

6. Which of the following is a Logical Conjunction?
 AND gate
 OR gate
 NOT gate
 both(a) and (b)
 All of the above

7. If Ӣ represents ‘1’ and Ṉ represents ‘0’. A and B are two input ends of OR logic gate and C is the only output. What will be the output if the input is A=Ӣ and B=Ӣ?
 ṈӢ
 Ṉ
 Ӣ
 ӢṈ
 ӢṈӢ

8. Which of the following is not a valid binary number?
 00000
 11111
 FFFFF
 101010
 010101

9. Which of the following symbol represents decisional or conditional statement in a flow chart?

 a
 b
 c
 d
 e

10. What are the permitted digits that can be used in Octal Number system?
 0-10
 1-9
 0-8
 0-7
 1-8

Answers:


  1. d
  2. b
  3. b
  4. b
  5. d
  6. a
  7. c
  8. c
  9. c
  10. d


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