Q. In the OSI model, which layer is responsible for data formatting and encryption?
-
A.
Session Layer
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B.
Presentation Layer
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C.
Application Layer
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D.
Transport Layer
Solution
The Presentation Layer is responsible for data formatting, encryption, and decryption.
Correct Answer:
B
— Presentation Layer
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Q. What is the main function of the Network Layer in the OSI model?
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A.
Data formatting
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B.
Path determination and logical addressing
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C.
Session management
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D.
Error control
Solution
The main function of the Network Layer is path determination and logical addressing for data packets.
Correct Answer:
B
— Path determination and logical addressing
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Q. What is the primary purpose of the Session Layer in the OSI model?
-
A.
Establishing, managing, and terminating sessions
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B.
Data encryption and decryption
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C.
Routing data packets
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D.
Error detection and correction
Solution
The primary purpose of the Session Layer is to establish, manage, and terminate sessions between applications.
Correct Answer:
A
— Establishing, managing, and terminating sessions
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Q. What layer of the TCP/IP model corresponds to the Transport Layer of the OSI model?
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A.
Application Layer
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B.
Internet Layer
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C.
Transport Layer
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D.
Network Access Layer
Solution
The Transport Layer in the TCP/IP model corresponds directly to the Transport Layer of the OSI model.
Correct Answer:
C
— Transport Layer
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Q. Which layer of the OSI model provides services to the user applications?
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A.
Transport Layer
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B.
Network Layer
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C.
Application Layer
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D.
Data Link Layer
Solution
The Application Layer provides services directly to user applications.
Correct Answer:
C
— Application Layer
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Q. Which of the following is NOT a function of the Application Layer?
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A.
File transfer
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B.
Email services
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C.
Data routing
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D.
Web services
Solution
Data routing is not a function of the Application Layer; it is handled by the Network Layer.
Correct Answer:
C
— Data routing
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Q. Which of the following protocols is used for email transmission?
-
A.
HTTP
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B.
FTP
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C.
SMTP
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D.
SNMP
Solution
SMTP (Simple Mail Transfer Protocol) is used for sending emails.
Correct Answer:
C
— SMTP
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Q. Which of the following protocols operates at the Application Layer of the TCP/IP model?
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A.
IP
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B.
TCP
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C.
UDP
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D.
DNS
Solution
DNS (Domain Name System) operates at the Application Layer of the TCP/IP model.
Correct Answer:
D
— DNS
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Q. Which protocol is used at the Application Layer of the TCP/IP model for web browsing?
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A.
FTP
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B.
HTTP
-
C.
SMTP
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D.
DNS
Solution
HTTP (Hypertext Transfer Protocol) is the protocol used for web browsing at the Application Layer.
Correct Answer:
B
— HTTP
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Q. Which protocol is used for sending email at the Application Layer?
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A.
HTTP
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B.
FTP
-
C.
SMTP
-
D.
SNMP
Solution
SMTP (Simple Mail Transfer Protocol) is used for sending emails at the Application Layer.
Correct Answer:
C
— SMTP
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