NSCT -Data Link Layer MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. Which layer of the OSI model is responsible for node-to-node delivery of data? (A) Data Link Layer (B) Physical Layer (C) Network Layer (D) Transport LayerShow All Answers 2. The Data Link Layer is which layer in the OSI model? (A) First Layer (B) Fourth Layer (C) Third Layer (D) Second Layer 3. The data unit used in the Data Link Layer is called: (A) Frame (B) Packet (C) Segment (D) Bit 4. Which type of addressing is used in the Data Link Layer? (A) Logical Address (B) Port Address (C) Network Address (D) Physical Address (MAC) 5. Which device mainly works at the Data Link Layer? (A) Router (B) Modem (C) Gateway (D) Switch 6. The process of dividing data into frames is called: (A) Routing (B) Framing (C) Encoding (D) Multiplexing 7. Which technique is commonly used for error detection in the Data Link Layer? (A) CRC (B) DNS (C) HTTP (D) FTP 8. The Data Link Layer ensures: (A) Node-to-node delivery (B) End-to-end delivery (C) Process-to-process delivery (D) Application delivery 9. Which sublayer of the Data Link Layer controls access to the transmission medium? (A) LLC (B) IP (C) TCP (D) MAC 10. What does MAC stand for? (A) Media Access Control (B) Machine Access Control (C) Multiple Access Channel (D) Media Address Channel 11. What does LLC stand for? (A) Local Link Control (B) Logical Link Control (C) Logical Layer Communication (D) Link Logical Channel 12. Flow control in the Data Link Layer is used to: (A) Control transmission speed (B) Match sender and receiver speed (C) Prevent data loss (D) Encrypt data 13. Which topology was originally used in Ethernet networks? (A) Ring (B) Bus (C) Mesh (D) Tree 14. Which device forwards frames using MAC addresses? (A) Router (B) Modem (C) Gateway (D) Switch 15. Error control in the Data Link Layer is achieved through: (A) File transfer (B) Acknowledgment and retransmission (C) Compression (D) Encryption 16. The Data Link Layer is responsible for: (A) Framing (B) All of these (C) Flow control (D) Error detection 17. Which protocol works at the Data Link Layer? (A) HTTP (B) Ethernet (C) FTP (D) SMTP 18. Which error detection method uses a polynomial division technique? (A) Parity Check (B) Checksum (C) CRC (D) Bit stuffing 19. Which layer sits between the Physical Layer and the Network Layer? (A) Transport Layer (B) Presentation Layer (C) Session Layer (D) Data Link Layer 20. The main purpose of the Data Link Layer is: (A) Routing packets (B) End-user communication (C) Application services (D) Reliable node-to-node data transfer
