Which layer of the OSI model is responsible for specifying the electrical, mechanical, and functional requirements for activating, maintaining, and deactivating physical connections?
A) Physical layer
B) Data Link layer
C) Network layer
D) Transport layer
Answer: A
Which layer of the OSI model provides error-free delivery of data between nodes over a network?
A) Physical layer
B) Data Link layer
C) Transport layer
D) Network layer
Answer: C
In the OSI model, which layer ensures end-to-end delivery of packets?
A) Transport layer
B) Network layer
C) Data Link layer
D) Session layer
Answer: B
Which layer of the OSI model is responsible for routing, addressing, and logical network topology?
A) Transport layer
B) Network layer
C) Data Link layer
D) Physical layer
Answer: B
At which layer of the OSI model do switches operate to forward data based on MAC addresses?
A) Data Link layer
B) Network layer
C) Transport layer
D) Physical layer
Answer: A
Which layer of the OSI model provides reliable, connection-oriented data communication services?
A) Transport layer
B) Data Link layer
C) Network layer
D) Physical layer
Answer: A
In the OSI model, which layer is responsible for data compression and encryption?
A) Physical layer
B) Presentation layer
C) Transport layer
D) Session layer
Answer: B
Which layer of the OSI model manages sessions between applications on different hosts?
A) Transport layer
B) Presentation layer
C) Session layer
D) Application layer
Answer: C
Which OSI model layer provides services such as file transfer and email?
A) Presentation layer
B) Application layer
C) Session layer
D) Transport layer
Answer: B
Which layer of the OSI model handles error detection and correction of data?
A) Presentation layer
B) Data Link layer
C) Transport layer
D) Network layer
Answer: B
At which OSI layer do gateways operate to connect networks with different protocols?
A) Application layer
B) Transport layer
C) Network layer
D) Presentation layer
Answer: C
Which OSI layer translates data formats between network devices?
A) Transport layer
B) Presentation layer
C) Application layer
D) Data Link layer
Answer: B
Which OSI layer handles network access and controls how devices access the media?
A) Data Link layer
B) Transport layer
C) Physical layer
D) Application layer
Answer: A
Which layer of the OSI model is responsible for ensuring reliable point-to-point communication between devices?
A) Transport layer
B) Network layer
C) Data Link layer
D) Physical layer
Answer: A
Which OSI layer defines the protocols for data exchange between applications over a network?
A) Transport layer
B) Presentation layer
C) Application layer
D) Data Link layer
Answer: C
Which OSI layer establishes, manages, and terminates communication sessions between applications?
A) Session layer
B) Transport layer
C) Data Link layer
D) Presentation layer
Answer: A
At which OSI layer do routers operate to make decisions based on IP addresses?
A) Network layer
B) Transport layer
C) Data Link layer
D) Session layer
Answer: A
Which layer of the OSI model converts data into a format suitable for transmission over the network?
A) Presentation layer
B) Application layer
C) Data Link layer
D) Transport layer
Answer: A
Which OSI layer provides network services directly to end-user applications?
A) Application layer
B) Transport layer
C) Network layer
D) Data Link layer
Answer: A
Which OSI layer checks for errors and controls flow of data between devices on the same network segment?
A) Data Link layer
B) Transport layer
C) Physical layer
D) Network layer
Answer: A
Which OSI layer defines the electrical, mechanical, procedural, and functional specifications for data transmission?
A) Physical layer
B) Data Link layer
C) Network layer
D) Transport layer
Answer: A
Which OSI layer manages data encryption and decryption for secure transmission?
A) Presentation layer
B) Session layer
C) Transport layer
D) Application layer
Answer: A
Which layer of the OSI model formats and translates data for the application layer?
A) Transport layer
B) Presentation layer
C) Session layer
D) Application layer
Answer: B
Which OSI layer sets up, coordinates, and terminates data transfer sessions?
A) Transport layer
B) Session layer
C) Presentation layer
D) Application layer
Answer: B
Which OSI layer provides network-independent services to the user’s applications?
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
Answer: A
Which OSI layer handles issues related to user interfaces and data representation?
A) Session layer
B) Transport layer
C) Presentation layer
D) Application layer
Answer: C
At which OSI layer does encryption and decryption of data occur for secure transmission?
A) Presentation layer
B) Application layer
C) Transport layer
D) Session layer
Answer: A
Which OSI layer ensures data integrity and manages error correction during transmission?
A) Transport layer
B) Network layer
C) Data Link layer
D) Physical layer
Answer: A
Which OSI layer provides network services to end-user applications through APIs and protocols?
A) Transport layer
B) Application layer
C) Presentation layer
D) Session layer
Answer: B
Which layer of the OSI model converts data into a format suitable for the application layer?
A) Presentation layer
B) Session layer
C) Application layer
D) Data Link layer
Answer: A
Which OSI layer ensures that messages are delivered in the correct sequence between applications?
A) Transport layer
B) Presentation layer
C) Session layer
D) Application layer
Answer: A
Which layer of the OSI model provides services to the software through operating system APIs?
A) Transport layer
B) Application layer
C) Presentation layer
D) Session layer
Answer: B
Which OSI layer manages the dialogue control between devices?
A) Session layer
B) Transport layer
C) Presentation layer
D) Application layer
Answer: A
Which OSI layer defines protocols for data exchange between different applications?
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
Answer: A
Which OSI layer ensures that data is formatted correctly for transmission?
A) Presentation layer
B) Session layer
C) Transport layer
D) Application layer
Answer: A
Which layer of the OSI model manages data flow and error control between nodes?
A) Transport layer
B) Session layer
C) Presentation layer
D) Application layer
Answer: A
Which OSI layer establishes, maintains, and terminates sessions between applications?
A) Session layer
B) Presentation layer
C) Application layer
D) Transport layer
Answer: A
Which OSI layer ensures that data units are transmitted and received successfully between nodes?
A) Data Link layer
B) Physical layer
C) Network layer
D) Transport layer
Answer: A
At which OSI layer do NICs (Network Interface Cards) operate to send and receive data packets?
A) Physical layer
B) Data Link layer
C) Transport layer
D) Network layer
Answer: B
Which OSI layer handles multiplexing, flow control, and error detection in data transmission?
A) Data Link layer
B) Network layer
C) Transport layer
D) Physical layer
Answer: A
Which OSI layer ensures that data packets are delivered to the correct network address?
A) Physical layer
B) Transport layer
C) Network layer
D) Data Link layer
Answer: C
Which OSI layer translates data into a format understood by applications?
A) Presentation layer
B) Session layer
C) Application layer
D) Data Link layer
Answer: A
At which OSI layer do gateways operate to connect networks with different protocols?
A) Network layer
B) Transport layer
C) Application layer
D) Presentation layer
Answer: A
Which OSI layer is responsible for logical addressing and routing?
A) Physical layer
B) Network layer
C) Data Link layer
D) Transport layer
Answer: B
Which OSI layer ensures that data is formatted correctly for transmission?
A) Presentation layer
B) Application layer
C) Session layer
D) Transport layer
Answer: A
Which OSI layer manages connections between applications on different hosts?
A) Transport layer
B) Presentation layer
C) Session layer
D) Application layer
Answer: C
Which OSI layer is responsible for routing and addressing between networks?
A) Transport layer
B) Presentation layer
C) Network layer
D) Application layer
Answer: C
Which OSI layer provides network services directly to end-user applications?
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
Answer: A
Which OSI layer is responsible for data translation, encryption, and compression?
A) Presentation layer
B) Application layer
C) Session layer
D) Transport layer
Answer: A
Which OSI layer provides the user interface and access to network services for applications?
A) Application layer
B) Presentation layer
C) Session layer
D) Transport layer
Answer: A