Data link layer

Which of the following is not a function of the Data Link Layer?

Framing

Error Detection and Correction

Routing

Flow Control

Which protocol is used for error detection in the Data Link Layer?

TCP

UDP

ICMP

CRC

What is the main purpose of the Data Link Layer?

Transferring data between end devices

Providing end-to-end connectivity

Establishing connections between networks

Ensuring reliable point-to-point and point-to-multipoint connections

Which sublayer of the Data Link Layer is responsible for MAC addresses?

Logical Link Control (LLC)

Media Access Control (MAC)

Network Interface Layer (NIL)

Frame Check Sequence (FCS)

What is the size of an Ethernet MAC address?

32 bits

64 bits

48 bits

128 bits

Which technique is used by the Data Link Layer to allow multiple devices to share the same communication channel?

Error Detection

Error Correction

Flow Control

Media Access Control

Which protocol is used for point-to-point communication in the Data Link Layer?

Ethernet

Token Ring

PPP (Point-to-Point Protocol)

ATM (Asynchronous Transfer Mode)

What is the purpose of the Frame Check Sequence (FCS) in the Data Link Layer?

Identifying the source and destination devices

Detecting transmission errors

Controlling the flow of data

Fragmenting and reassembling data packets

Which Data Link Layer protocol uses CSMA/CD (Carrier Sense Multiple Access with Collision Detection)?

Ethernet

PPP

Token Ring

HDLC (High-Level Data Link Control)

Which layer of the OSI model does the Data Link Layer correspond to?

Layer 1 (Physical Layer)

Layer 2 (Data Link Layer)

Layer 3 (Network Layer)

Layer 4 (Transport Layer)

Which of the following is a responsibility of the Logical Link Control (LLC) sublayer of the Data Link Layer?

Error Detection

Error Correction

Flow Control

Framing

In Ethernet, what type of addressing is used at the Data Link Layer?

IP Addresses

MAC Addresses

Port Numbers

Hostnames

Which mechanism is used in the Data Link Layer to handle data frames that are too long to fit into a single network packet?

Fragmentation

Segmentation

Error Detection

Flow Control

Which of the following is a characteristic of HDLC (High-Level Data Link Control)?

It is a connection-oriented protocol.

It is used primarily in Ethernet networks.

It does not support error detection.

It operates only in full-duplex mode.

What is the purpose of the Address Resolution Protocol (ARP) at the Data Link Layer?

To map IP addresses to MAC addresses

To fragment large data frames

To establish virtual circuits

To route packets between networks

Which Data Link Layer protocol uses a token-passing access method?

Ethernet

Token Ring

PPP

HDLC

What is the role of the Beacon frame in Wi-Fi networks at the Data Link Layer?

To detect collisions

To advertise network services

To synchronize devices

To manage flow control

Which error detection method is commonly used in the Data Link Layer of Ethernet networks?

Checksum

CRC (Cyclic Redundancy Check)

Parity Bit

Hamming Code

In the context of Data Link Layer protocols, what does the term "duplex mode" refer to?

The maximum data rate supported by the protocol

The way in which data frames are framed

The capability of devices to detect and correct errors

The direction of data flow between communicating devices

Which of the following is an advantage of using PPP (Point-to-Point Protocol) over HDLC?

PPP supports error detection and correction.

PPP is a faster protocol.

HDLC is more widely supported by networking equipment.

HDLC offers better security features.

Data link layer

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