OSI Model MCQs – [Which of the following OSI Layer?]

Which layer is responsible for Allowing users to send data, access data, and use networks?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

Which is the 7th layer of OSI model?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

Which is end-user layer in OSI model?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

which of the following OSI layer is
which of the following OSI layer is

Which OSI layer uses File Transfer Protocol (FTP)?

(A). Session Layer

(B). Network Layer

(C). Application Layer and presentation layer

(D). Transport Layer

Correct Answer: Application Layer and presentation layer

Which OSI layer is responsible for Domain Name System (DNS)?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

Which OSI layer is using simple Mail Transfer Protocol (SMTP?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

Which OSI layer is using simple Mail Transfer Protocol (SMTP?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Application Layer

On which layer SSL is used in OSI model?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Presentation Layer

On which layer SSH is used in OSI model?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Presentation Layer

On which layer IMAP is used in OSI model?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Presentation Layer

Which layer is responsible for Encryption and decryption in the OSI model?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Presentation Layer

On which layer Sockets works in OSI model?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

Remote procedure call protocol (RPC) works on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

Point-to-Point Tunneling Protocol (PPTP) works on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

Session Control Protocol (SCP) works on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

Session Description Protocol (SDP) works on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

TCP, and UDP work on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

IPv4 and IPv6 work on which OSI layer?

(A). Session Layer

(B). Presentation Layer

(C). Network Layer

(D). Transport Layer

Correct Answer: Network Layer

IGMP works on which OSI layer?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Network Layer

IGMP works on which OSI layer?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Network Layer

ICMP works on which OSI layer?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Network Layer

IPSec works on which OSI layer?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Network Layer

Encapsulation and fragmentation work on which OSI layer?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Network Layer

Which OSI layer is responsible for Frames?

(A). Presentation Layer

(B). Network Layer

(C). Application Layer

(D). Datalink Layer

Correct Answer: Datalink Layer

Switch works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Datalink Layer

Bridge works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Datalink Layer

Ethernet works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Datalink Layer

Media Access Control (MAC) Layer is a sublayer of which layer of the OSI model?

(A). Presentation Layer

(B). Network Layer

(C). Application Layer

(D). Datalink Layer

Correct Answer: Datalink Layer

Which layer is responsible for Presenting the data to the application layer?

(A). Presentation Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Presentation Layer

Which is the 6th layer of OSI model?

(A). Presentation Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Presentation Layer

Which layer is Responsible for opening sessions, ensuring they remain open and functional while data is being transferred, and closing them when communication ends/

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Session Layer

Which is the 5th layer of the OSI model?

(A). Presentation Layer

(B). Network Layer

(C). Session Layer

(D). Transport Layer

Correct Answer: Session Layer

Which layer Controls the reliability of a given link through flow control, segmentation and desegmentation, and error control?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Transport Layer

Which is the 4th layer of the OSI model?

(A). Presentation Layer

(B). Network Layer

(C). Session Layer

(D). Transport Layer

Correct Answer: Transport Layer

Which layer is responsible for routing the data via the best physical path?

(A). Session Layer

(B). Network Layer

(C). Application Layer

(D). Transport Layer

Correct Answer: Network Layer

Which is the 3rd layer of the OSI model?

(A). Presentation Layer

(B). Network Layer

(C). Session Layer

(D). Transport Layer

Correct Answer: Network Layer

Which layer is responsible for multiplexing data streams, data frame detection, medium access, and error control?

(A). Session Layer

(B). Network Layer

(C). Data Link Layer

(D). Transport Layer

Correct Answer: Data Link Layer

Which is the 2nd layer of the OSI model?

(A). Presentation Layer

(B). Data Link Layer

(C). Session Layer

(D). Transport Layer

Correct Answer: Data Link Layer

Which layer is Responsible for the communication of the unstructured raw data streams over a physical medium?

(A). Session Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Which is the 1st layer of OSI model?

(A). Presentation Layer

(B). Data Link Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Coaxial cable and Fiber optic cable work on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Repeaters works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Wireless works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Hubs works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Bus, Ring, Star, and Mesh topology works on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Communication modes like Simplex, Half Duplex, and Full Duplex work on which OSI layer?

(A). Datalink Layer

(B). Network Layer

(C). Physical Layer

(D). Transport Layer

Correct Answer: Physical Layer

Layers of the OSI Model

Layer Responsibility
7. Application Layer
  • Allows users to send data, access data and use networks.
  • End User layer
  • Protocols:
    • File Transfer Protocol (FTP)
    • Simple Mail Transfer Protocol (SMTP)
    • Domain Name System (DNS)
    • IRC, HTTP
    • SSH, DNS
6. Presentation Layer
  • Presenting the data to the application layer Syntax layer
  • MPEG, IMAP, SSL, SSH, FTP, JPEG,
  • Data conversion
  • Character code translation
  • Data compression
  • Encryption and decryption

 

5. Session Layer
  • Responsible for opening sessions, ensuring they remain open and functional while data is being transferred, and closing them when communication ends.
  • Synch & send to port
  • WinSock, API’s, Sockets
  • Protocols:
    • Remote procedure call protocol (RPC)
    • Point-to-Point Tunneling Protocol (PPTP)
    • Session Control Protocol (SCP)
    • Session Description Protocol (SDP)

 

 

 

 

 

 

4. Transport Layer
  • Controls the reliability of a given link through flow control, segmentation and desegmentation, and error control.
  • End-to-end connections
  • Protocols: TCP, UDP
  • error control
  • flow control
  • congestion control
3. Network Layer
  • routing the data via the best physical path
  • Packets
  • Protocols: IPSec, ICMP, IGMP, IP, IPv4, IPv6.
  • Best available path
  • traffic controls
  •  congestion of data packets
  •  encapsulation and fragmentation
2. Data Link Layer
  • Responsible for multiplexing data streams, data frame detection, medium access, and error control.
  • Frames
  • Switch, PPP, Bridge, Ethernet
  • Media Access Control (MAC) Layer

 

1. Physical Layer
  • Responsible for the communication of the unstructured raw data streams over a physical medium
  • Hardware: Coaxial cable, Fiber optic cable, Repeaters, Wireless, Hubs
  • Topologies : Bus, Ring, Star, and Mesh topology
  • Communication modes: Simplex, Half Duplex, and Full Duplex etc
  • Data transmission performance: Bit Rate and Bit Synchronization

 

 

Prof.Fazal Rehman Shamil (Available for Professional Discussions)
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