Umar Draz, Author at DocMCQs

Cyber security protects computer networks against:

A. Unauthorized Access

B. Exploitation

C. Modification

D. All of these

Correct answer is: D. All of these

Cybersecurity ensures protection from unauthorized access, misuse, and data modification.

Which key is used to view Slide Show in PowerPoint?

A. F1

B. F5

C. F7

D. Esc

Correct answer is: B. F5

In PowerPoint, pressing F5 starts the slide show from the beginning.

Which shortcut key is used to insert a hyperlink?

A. Ctrl+H

B. Ctrl+L

C. Ctrl+K

D. Ctrl+Y

Correct answer is: C. Ctrl+K

The shortcut Ctrl + K is used to insert a hyperlink in Word, Excel, and PowerPoint.

The innermost directory in the path C > Documents and files > Desktop > City > Market is:

A. Computer

B. Document and files

C. Desktop

D. Market

Correct answer is: D. Market

The last folder in the path (Market) is the innermost directory.

Find the volume of a cylinder whose base radius is 4 cm and height is 10 cm.

A. 402 cm³

B. 462 cm³

C. 502 cm³

D. 902 cm³

Correct answer is: C. 502 cm³

Volume of cylinder = πr²h = 3.14 × (4²) × 10 = 502.4 cm³ ≈ 502 cm³.

A and B finish a job in 12 days, while A, B, and C finish in 8 days. How many days will C alone take?

A. 20 days

B. 24 days

C. 28 days

D. 30 days

Correct answer is: B. 24 days

Work of A+B in 1 day = 1/12, A+B+C in 1 day = 1/8 → C’s work = 1/24 → C alone = 24 days.

If the distance between A(p,0) and B(0,p) is 8, find p.

A. ”√32″

B. ”4√6″

C. ”4″

D. ”√4″

Correct answer is: A. ”√32″

”Distance

= √(2p²) = 8 → p² = 32 → p = ±√32.”]

A sphere has radius 3 cm. What is its volume?

A. 36π cm³

B. 9π cm³

C. 12 cm³

D. None

Correct answer is: A. 36π cm³

Volume of sphere = (4/3)πr³ = (4/3)π(27) = 36π cm³.

What is the result of: 5 + 51 + (−3) + 7 + (−5.1)7 ?

A. 52.9

B. 53.9

C. 54.9

D. 58.9

Correct answer is: C. 54.9

Step by step: 5 + 51 = 56 → 56 − 3 = 53 → 53 + 7 = 60 → 60 − 5.1 = 54.9.

The point (0, -7) lies in:

A. First quadrant

B. Second quadrant

C. On the x-axis

D. On the y-axis

Correct answer is: D. On the y-axis

In coordinate geometry, if x = 0 the point lies on the y-axis; if y = 0, it lies on the x-axis. Since here x = 0, (0, -7) lies exactly on the y-axis.

Author name: Umar Draz