1. Which layer of the OSI model provides process-to-process communication?
(A) Transport Layer
(B) Network Layer
(C) Data Link Layer
(D) Session Layer
2. The Transport Layer is which layer of the OSI model?
(A) Third Layer
(B) Sixth Layer
(C) Fifth Layer
(D) Fourth Layer
3. The Transport Layer breaks data into smaller units called:
(A) Bits
(B) Frames
(C) Segments
(D) Packets
4. Which protocol at the Transport Layer provides reliable communication?
(A) TCP
(B) UDP
(C) IP
(D) ICMP
5. Which Transport Layer protocol is connectionless?
(A) TCP
(B) SMTP
(C) HTTP
(D) UDP
6. Which feature ensures data is delivered in the correct order?
(A) Sequencing
(B) Error Detection
(C) Flow Control
(D) Fragmentation
7. Which feature prevents a fast sender from overwhelming a slow receiver?
(A) Multiplexing
(B) Error Detection
(C) Flow Control
(D) Routing
8. Which feature ensures lost segments are retransmitted?
(A) Sequencing
(B) Error Control
(C) Flow Control
(D) Addressing
9. What is the port number used by HTTP in TCP?
(A) 20
(B) 21
(C) 443
(D) 80
10. Which Transport Layer protocol is faster but unreliable?
(A) TCP
(B) ICMP
(C) FTP
(D) UDP
11. The Transport Layer uses which type of addressing?
(A) IP Address
(B) Port Number
(C) MAC Address
(D) Logical Address
12. Which protocol ensures reliable delivery of emails?
(A) IP
(B) UDP
(C) ICMP
(D) TCP
13. Multiplexing in the Transport Layer allows:
(A) Error detection
(B) Data encryption
(C) Multiple applications to share the network
(D) Routing of packets
14. Which protocol is used for streaming where speed is important?
(A) TCP
(B) UDP
(C) SMTP
(D) FTP
15. What type of service does TCP provide?
(A) Connection-oriented
(B) Connectionless
(C) Simplex
(D) Half Duplex
16. The combination of IP address and port number is called:
(A) Socket
(B) Segment
(C) Frame
(D) Packet
17. Which Transport Layer protocol is used for DNS queries?
(A) TCP
(B) ICMP
(C) UDP
(D) HTTP
18. The Transport Layer ensures:
(A) Reliable end-to-end delivery
(B) Node-to-node delivery
(C) Path selection
(D) Logical addressing
19. Which Transport Layer protocol is used by FTP?
(A) TCP
(B) UDP
(C) ICMP
(D) SMTP
20. The main purpose of the Transport Layer is:
(A) Physical transmission of bits
(B) Routing packets
(C) Reliable process-to-process communication
(D) Framing data