Model Paper 149 Junior Computer Operator 2024

API stands for:

A. Algorithmic Protocol Interface
B. Application Programming Interface
C. Adapter Protocol Interface
D. Accelerated Programming Interface
Correct answer is: B. Application Programming Interface
API allows communication between software applications.

Which function key is used to refresh the current window?

A. F4
B. F5
C. F8
D. F9
Correct answer is: B. F5
F5 is universally used to refresh webpages, windows, or content displays.

Which is NOT a valid MS Office version?

A. Office 2007
B. Office 2016
C. Office 365
D. Office Vista
Correct answer is: D. Office Vista
Vista is an operating system, not an Office suite version.

Ctrl + N shortcut is used to:

A. Create a new document
B. Save document
C. Open document
D. Close document
Correct answer is: A. Create a new document
Ctrl + N instantly creates a new blank document in Word and other Office apps.

What protects a network server from unauthorized access?

A. Antivirus
B. Firewall
C. Gateway
D. Flow control
Correct answer is: B. Firewall
Firewalls block unauthorized access and secure the network perimeter.

File extension of a PowerPoint file:

A. ppt
B. xls
C. docx
D. tts
Correct answer is: A. ppt
PowerPoint presentations commonly use the .ppt or .pptx extension.

Which ensures authentication of an email?

A. Password
B. Encryption
C. Digital Signature
D. Spam alert
Correct answer is: C. Digital Signature
A digital signature confirms the sender’s identity and ensures message integrity.

Which key is pressed while moving a column in MS Excel?

A. Ctrl
B. Shift
C. Alt
D. Tab
Correct answer is: B. Shift
Holding Shift while dragging moves a column to a new place instead of overwriting data.

A polygon with four sides is called:

A. Hexagon
B. Octagon
C. Heptagon
D. Quadrilateral
Correct answer is: D. Quadrilateral
A quadrilateral has exactly four sides and four angles.

To go to a specific location in a document we use:

A. Sub-documents
B. Bookmarks
C. Cross references
D. Outlines
Correct answer is: B. Bookmarks
Bookmarks mark a specific spot in the document so the user can jump to it easily.
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