25 MCQ Questions With Answers PDF

\#\#\# \*\*25 MCQ Questions with Answers\*\* \-\-- \*\*1. Which of the following is a key characteristic of distributed processing?\*\* a\. Centralized data storage b\. Single point of failure c\. Resource sharing d\. Lack of scalability \*\*Answer\*\*: c. Resource sharing \-\-- \*\*2. Whic...

\#\#\# \*\*25 MCQ Questions with Answers\*\* \-\-- \*\*1. Which of the following is a key characteristic of distributed processing?\*\* a\. Centralized data storage b\. Single point of failure c\. Resource sharing d\. Lack of scalability \*\*Answer\*\*: c. Resource sharing \-\-- \*\*2. Which network criterion focuses on the speed of data delivery?\*\* a\. Security b\. Reliability c\. Performance d\. Scalability \*\*Answer\*\*: c. Performance \-\-- \*\*3. What is the role of the physical layer in the OSI model?\*\* a\. Provides encryption and decryption b\. Manages logical addressing c\. Defines the transmission of raw bits over a medium d\. Establishes sessions between applications \*\*Answer\*\*: c. Defines the transmission of raw bits over a medium \-\-- \*\*4. Which of the following is NOT a standard organization?\*\* a\. IEEE b\. IETF c\. ITU d\. DNS \*\*Answer\*\*: d. DNS \-\-- \*\*5. In the OSI model, which layer is responsible for routing?\*\* a\. Data Link b\. Network c\. Transport d\. Session \*\*Answer\*\*: b. Network \-\-- \*\*6. Which protocol suite is commonly used for communication over the Internet?\*\* a\. OSI b\. TCP/IP c\. HDLC d\. X.25 \*\*Answer\*\*: b. TCP/IP \-\-- \*\*7. Which type of addressing is used in the data link layer?\*\* a\. IP Address b\. MAC Address c\. Port Number d\. URL \*\*Answer\*\*: b. MAC Address \-\-- \*\*8. What is the main purpose of the transport layer in the TCP/IP model?\*\* a\. Packet forwarding b\. End-to-end communication and error recovery c\. Physical transmission of bits d\. Data encryption \*\*Answer\*\*: b. End-to-end communication and error recovery \-\-- \*\*9. Which of the following LAN technologies uses a logical ring topology?\*\* a\. Ethernet b\. Token Ring c\. Token Bus d\. FDDI \*\*Answer\*\*: b. Token Ring \-\-- \*\*10. What type of switching involves establishing a dedicated path between sender and receiver?\*\* a\. Circuit Switching b\. Packet Switching c\. Message Switching d\. Datagram Switching \*\*Answer\*\*: a. Circuit Switching \-\-- \*\*11. Which protocol is used for point-to-point communication?\*\* a\. HDLC b\. PPP c\. FTP d\. UDP \*\*Answer\*\*: b. PPP \-\-- \*\*12. In Stop-and-Wait ARQ, what does the sender do after sending a frame?\*\* a\. Sends another frame immediately b\. Waits for an acknowledgment c\. Terminates the connection d\. Resends the same frame \*\*Answer\*\*: b. Waits for an acknowledgment \-\-- \*\*13. In Go-Back-N ARQ, how many frames can the sender transmit without waiting for an acknowledgment?\*\* a\. One b\. All frames c\. Up to the window size d\. Only erroneous frames \*\*Answer\*\*: c. Up to the window size \-\-- \*\*14. What does HDLC stand for?\*\* a\. High Data Link Control b\. High-level Data Link Control c\. Hybrid Data Link Control d\. Hierarchical Data Link Control \*\*Answer\*\*: b. High-level Data Link Control \-\-- \*\*15. Which of the following is a channelization protocol?\*\* a\. FDMA b\. CSMA/CD c\. Polling d\. Token Passing \*\*Answer\*\*: a. FDMA \-\-- \*\*16. What is the purpose of Selective Repeat ARQ?\*\* a\. Retransmits all frames after an error b\. Retransmits only the erroneous frames c\. Provides error detection but no correction d\. Ensures secure data transmission \*\*Answer\*\*: b. Retransmits only the erroneous frames \-\-- \*\*17. In packet switching, which method uses a connection-oriented approach?\*\* a\. Datagram approach b\. Virtual circuit c\. Time-division multiplexing d\. Circuit switching \*\*Answer\*\*: b. Virtual circuit \-\-- \*\*18. What is the main function of the MAC sublayer?\*\* a\. Error detection and correction b\. Managing access to the shared medium c\. Routing packets d\. Establishing sessions between applications \*\*Answer\*\*: b. Managing access to the shared medium \-\-- \*\*19. In the OSI model, which layer provides end-to-end delivery of messages?\*\* a\. Network b\. Transport c\. Data Link d\. Physical \*\*Answer\*\*: b. Transport \-\-- \*\*20. What is the purpose of flow control in the data link layer?\*\* a\. To detect errors in frames b\. To prevent congestion by controlling the rate of data transmission c\. To establish logical connections d\. To route data across networks \*\*Answer\*\*: b. To prevent congestion by controlling the rate of data transmission \-\-- \*\*21. Which of the following is a high-speed LAN technology?\*\* a\. Ethernet b\. Token Ring c\. FDDI d\. Wi-Fi \*\*Answer\*\*: c. FDDI \-\-- \*\*22. Which organization developed the OSI model?\*\* a\. IEEE b\. ISO c\. IETF d\. ITU \*\*Answer\*\*: b. ISO \-\-- \*\*23. Which layer of the OSI model manages dialog control and synchronization?\*\* a\. Session b\. Transport c\. Application d\. Presentation \*\*Answer\*\*: a. Session \-\-- \*\*24. What does CSMA/CD stand for?\*\* a\. Carrier Sense Multiple Access with Collision Detection b\. Channel Sharing Multiple Access with Collision Detection c\. Carrier Sensing Medium Access Control Design d\. Collision Sense Media Access with Control Detection \*\*Answer\*\*: a. Carrier Sense Multiple Access with Collision Detection \-\-- \*\*25. Which protocol provides connectionless data transfer in the transport layer?\*\* a\. TCP b\. UDP c\. IP d\. ICMP \*\*Answer\*\*: b. UDP \-\-- This set of questions covers a wide range of foundational networking topics for better conceptual understanding.