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Presentation Layer (OSI Layer 6) – MCQs

1.
Which OSI layer ensures data is in a readable format for the application?
Presentation Layer
Session Layer
Transport Layer
Application Layer
Presentation Layer (Layer 6) formats data for the application.
2.
Which function of the Presentation Layer converts data between different formats such as ASCII and EBCDIC?
Data translation
Routing
Segmentation
Flow control
Data translation converts data between different encoding formats for compatibility.
3.
Which Presentation Layer function secures data for transmission over networks?
Encryption / Decryption
MAC addressing
Error detection
Port numbering
Presentation Layer encrypts and decrypts data to ensure security.
4.
Which function of the Presentation Layer reduces the size of data for efficient transmission?
Compression / Decompression
Routing
Segmentation
Flow control
Compression reduces the data size and decompression restores it at the receiver.
5.
What is the Protocol Data Unit (PDU) of the Presentation Layer?
Data
Segment
Frame
Packet
Presentation Layer, like Session and Application layers, uses Data as its PDU.
6.
Which device can operate at the Presentation Layer?
Gateway
Switch
Hub
Router
Gateways can operate at higher layers, including the Presentation Layer.
7.
Which example represents Presentation Layer functionality?
HTTPS encryption
IP routing
MAC address lookup
Port forwarding
HTTPS encryption ensures secure and formatted data at the Presentation Layer.
8.
Which task demonstrates the Presentation Layer converting file formats?
JPEG/MP3 conversion
DNS lookup
Segment reassembly
Flow control
Presentation Layer converts file formats like images and audio for applications.
9.
At which OSI layer does encryption, compression, and data translation occur?
Layer 6
Layer 5
Layer 4
Layer 7
Layer 6 (Presentation Layer) is responsible for formatting and transforming data.
10.
What is the main purpose of the Presentation Layer?
Readable format for application
Reliable packet delivery
Session management
Routing
Presentation Layer ensures that data is readable and usable by the application.
1.
Which OSI layer ensures data is readable by the application?
Presentation Layer
Session Layer
Transport Layer
Application Layer
Presentation Layer formats data for the application.
2.
Which function of Presentation Layer converts data formats like ASCII to EBCDIC?
Data translation
Segmentation
Error control
Flow control
Data translation ensures compatibility between different encoding formats.
3.
Which Presentation Layer function compresses data to reduce size for transmission?
Compression / Decompression
Encryption
Sequencing
Routing
Compression decreases data size; decompression restores it at the receiver.
4.
Which Presentation Layer function ensures secure communication?
Encryption / Decryption
Flow control
Error detection
Routing
Presentation Layer encrypts/decrypts data for security.
5.
Which device operates at the Presentation Layer?
Gateway
Switch
Hub
Router
Gateways can operate at higher OSI layers including the Presentation Layer.

Interview Questions (5 MCQs)

6.
Which PDU (Protocol Data Unit) is used by the Presentation Layer?
Data
Segment
Frame
Packet
Presentation Layer uses data as its PDU.
7.
What type of data transformation is done at the Presentation Layer?
Encryption, Compression, and Translation
Segmentation, Routing, and Flow control
Error detection and correction
Address resolution
The Presentation Layer handles encryption, compression, and data format translation.
8.
Which OSI layer handles HTTPS encryption?
Presentation Layer
Transport Layer
Session Layer
Application Layer
HTTPS encryption/decryption is performed at the Presentation Layer.
9.
Which Presentation Layer function is responsible for converting multimedia formats?
Data translation
Flow control
Error handling
Port addressing
Presentation Layer translates formats like JPEG, MP3 for applications.
10.
Which OSI layer sometimes uses a gateway to perform its functions?
Presentation Layer
Data Link Layer
Network Layer
Physical Layer
Gateways operate at higher layers including the Presentation Layer.

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