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Question 181

UP police computer operator 2018• Computer Science

Simplify

\(\rm Z=\overline{(A+\overline{B+C)}D}\)

  1. AOption (a)

    Z = A̅ + BC + D̅ 

  2. BOption (b)

    Z = A̅B + CD̅

  3. COption (c)

    Z = A(B + C̅) + D

  4. DOption (d)

    Z = A̅(B + C) + D̅

View answer & explanation

Correct answer

Answer: (a)A.

Z = A̅ + BC + D̅ 

Explanation not yet available.

Question 182

UP police computer operator 2018• Computer Science

Which of the following infix expressions is obtained on converting the postfix expression A B - C + D E F - + $$?

  1. AOption (a)

    A - B + C + D $ E – F$

  2. BOption (b)

    A - B + C $ D + E – F$

  3. COption (c)

    A - B $ C + D + E – F$

  4. DOption (d)

    A + B - C $ D + E – F$

View answer & explanation

Correct answer

Answer: (a)A.

A - B + C + D $ E – F$

Explanation not yet available.

Question 183

UP police computer operator 2018• Computer Science

Simplify Z = A̅BC + A̅ 

  1. AOption (a)

    Z = BC

  2. BOption (b)

    Z = BC + 1

  3. COption (c)

    Z = A̅BC

  4. DOption (d)

    Z = A̅

View answer & explanation

Correct answer

Answer: (a)A.

Z = BC

Explanation not yet available.

Question 184

UP police computer operator 2018• Computer Science

The formula =C3+C4+C5 has been copied from cell C7 to cell E7. What will the formula bar display when the cell selector is in cell E7?

  1. AOption (a)

    =E3+E4+E5

  2. BOption (b)

    =E4+E5+E6

  3. COption (c)

    =C7+D7+E7

  4. DOption (d)

    =C3+C4+C5

View answer & explanation

Correct answer

Answer: (a)A.

=E3+E4+E5

Explanation not yet available.

Question 185

UP police computer operator 2018• Computer Science

You need to save an existing word document in another name. Which of the following options will you use?

  1. AOption (a)

    Insert

  2. BOption (b)

    Save As

  3. COption (c)

    Save

  4. DOption (d)

    Edit

View answer & explanation

Correct answer

Answer: (a)A.

Insert

Explanation not yet available.

Question 186

UP police computer operator 2018• Computer Science

A queue in which addition as well as deletion of elements can take place at both the ends is called

  1. AOption (a)

    Simple queue

  2. BOption (b)

    Circular queue

  3. COption (c)

    Double-ended queue

  4. DOption (d)

    Priority queue

View answer & explanation

Correct answer

Answer: (a)A.

Simple queue

Explanation not yet available.

Question 187

UP police computer operator 2018• Computer Science

 What is a Signature in the email? 

  1. AOption (a)

    It is an in-built digital signature sent alongwith your email ID as a QR code

  2. BOption (b)

    It is an electronic and digital signature sent alongwith your email

  3. COption (c)

    It is actually the email ID of the sender attached at the end of the email body

  4. DOption (d)

    It is a block of text appended to the end of an email message generally having contact information of user

View answer & explanation

Correct answer

Answer: (a)A.

It is an in-built digital signature sent alongwith your email ID as a QR code

Explanation not yet available.

Question 188

UP police computer operator 2018• Computer Science

Which one of the following is a secondary storage device?

  1. AOption (a)

    Monitor

  2. BOption (b)

    RAM

  3. COption (c)

    Hard Disk

  4. DOption (d)

    Processor 

View answer & explanation

Correct answer

Answer: (a)A.

Monitor

Explanation not yet available.

Question 189

UP police computer operator 2018• Computer Science

What should be looked at first to find simplified Boolean expression from a Karnaugh map?

  1. AOption (a)

    Quads

  2. BOption (b)

    Singles

  3. COption (c)

    Pairs 

  4. DOption (d)

    Octets

View answer & explanation

Correct answer

Answer: (a)A.

Quads

Explanation not yet available.

Question 190

UP police computer operator 2018• Computer Science

Ethernet is also known as:

  1. AOption (a)

    803.2

  2. BOption (b)

    802.3 

  3. COption (c)

    802.5

  4. DOption (d)

    802.11b

View answer & explanation

Correct answer

Answer: (a)A.

803.2

Explanation not yet available.