TRE 4.0 Networking Quiz Practice Set 2 30th October 2026 Share On Que: (1). Communication between a computer and a keyboard involves _____ transmission. Asked in BPSC TRE 3.0 half-duplex B. full-duplex C. simplex A. More than one of the above D. None of the above E. Check Answer Open question page Que: (2). Which transmission mode allows data to flow in both directions, but not simultaneously? Simplex A. Half-duplex B. Full-duplex C. Multiplex D. None of the above E. Check Answer Open question page Que: (3). Which transmission mode allows simultaneous communication in both directions? Half-duplex B. Simplex A. Full-duplex C. Asynchronous D. None of the above E. Check Answer Open question page Que: (4). Which of the following is a common example of simplex communication? Walkie-talkie A. Traditional television broadcasting C. Telephone conversation B. Video conferencing D. None of the above E. Check Answer Open question page Que: (5). In which transmission mode can both sender and receiver transmit data at the same time? Full-duplex C. Half-duplex B. Simplex A. Serial D. None of the above E. Check Answer Open question page Que: (6). A walkie-talkie is an example of which type of data transmission? Half-duplex B. Simplex A. Full-duplex C. Parallel D. None of the above E. Check Answer Open question page Que: (7). Which of the following communication systems generally uses full-duplex transmission? Walkie-talkie A. Traditional radio broadcasting B. Telephone conversation C. One-way television broadcasting D. None of the above E. Check Answer Open question page Que: (8). What is the main characteristic of simplex transmission? Data flows in both directions alternately C. Data flows in both directions simultaneously A. Data flows in only one direction B. Data is transmitted only in parallel D. None of the above E. Check Answer Open question page Que: (9). Which of the following is NOT a transmission mode based on the direction of data flow? Simplex A. Full-duplex C. Half-duplex B. Multiplexing D. More than one of the above E. Check Answer Open question page Que: (10). Which transmission mode is generally suitable for applications requiring simultaneous two-way data exchange? Simplex A. Full-duplex C. Half-duplex B. Unidirectional D. None of the above E. Check Answer Open question page Que: (11). Wireless transmission of signals can be done via Asked in BPSC TRE 3.0 infrared C. radio waves A. microwaves B. More than one of the above D. None of the above E. Check Answer Open question page Que: (12). Which type of transmission medium uses air or vacuum to transmit electromagnetic signals? Twisted pair cable C. Unguided media B. Guided media A. Coaxial cable D. None of the above E. Check Answer Open question page Que: (13). Which wireless transmission medium is commonly used in AM and FM radio broadcasting? Radio waves A. Infrared waves B. Ultraviolet rays C. X-rays D. None of the above E. Check Answer Open question page Que: (14). Which wireless communication technology commonly uses infrared signals? GPS navigation B. Traditional TV remote control A. FM radio C. Satellite television D. None of the above E. Check Answer Open question page Que: (15). Which type of wireless communication generally requires a line-of-sight path between transmitting and receiving antennas? Microwave communication A. Wired communication C. Low-frequency radio communication B. Twisted pair communication D. None of the above E. Check Answer Open question page Que: (16). Which wireless technology is commonly used for short-range communication between devices such as smartphones and wireless headphones? Satellite communication B. AM broadcasting C. Bluetooth A. Optical fibre D. None of the above E. Check Answer Open question page Que: (17). Which electromagnetic waves are commonly used in satellite communication? Ultraviolet rays C. Microwaves A. Infrared only B. Visible light only D. None of the above E. Check Answer Open question page Que: (18). Which of the following is a major limitation of infrared communication? It cannot transmit electromagnetic signals A. It requires optical fibre cables C. It is easily obstructed by physical objects B. It works only through satellites D. None of the above E. Check Answer Open question page Que: (19). Which frequency band is used by conventional Wi-Fi networks operating at 2.4 GHz? Radio frequency ISM band A. Infrared band B. Ultraviolet band C. X-ray band D. None of the above E. Check Answer Open question page Que: (20). Which of the following wireless communication methods can transmit signals over very long distances using communication satellites? Satellite microwave communication B. Infrared communication A. Bluetooth communication C. Near-field communication D. None of the above E. Check Answer Open question page Que: (21). Sniffers can be prevented by using Asked in BPSC TRE 3.0 ethernet LAN B. wired environment A. switched network C. More than one of the above D. None of the above E. Check Answer Open question page Que: (22). What is the primary purpose of a packet sniffer? To monitor and capture network traffic A. To create database backups C. To increase processor speed B. To encrypt hard disks D. None of the above E. Check Answer Open question page Que: (23). Which device broadcasts incoming data packets to all connected ports in a traditional Ethernet LAN? Switch B. Router A. Hub C. Gateway D. None of the above E. Check Answer Open question page Que: (24). Which protocol is commonly used to encrypt web communication between a browser and a web server? FTP B. HTTP A. HTTPS C. Telnet D. None of the above E. Check Answer Open question page Que: (25). Which technique involves secretly intercepting communication between two parties? Man-in-the-Middle attack B. Phishing A. Brute-force attack C. Denial of Service attack D. None of the above E. Check Answer Open question page Que: (26). Which security technique helps protect network data from being understood if intercepted? Encryption A. Defragmentation B. Compression C. Formatting D. None of the above E. Check Answer Open question page Que: (27). Which network security system monitors incoming and outgoing network traffic and applies predefined security rules? Assembler C. Firewall B. Compiler A. Load balancer D. None of the above E. Check Answer Open question page Que: (28). Which protocol is commonly used to map an IPv4 address to a MAC address in a local area network? FTP B. DNS A. ARP C. SMTP D. None of the above E. Check Answer Open question page Que: (29). Which type of attack attempts to overwhelm a network service with excessive traffic? Sniffing attack C. Phishing attack A. Denial of Service attack B. Spoofing attack D. None of the above E. Check Answer Open question page Que: (30). Which tool is widely used for capturing and analyzing network packets? Wireshark A. MySQL C. MS Word B. PowerPoint D. None of the above E. Check Answer Open question page Que: (31). In TDM, slots are further divided into Asked in BPSC TRE 3.0 packets B. frames A. bits C. More than one of the above D. None of the above E. Check Answer Open question page Que: (32). What is the main purpose of multiplexing in data communication? To convert analog signals into digital signals only C. To combine multiple signals for transmission over a single communication channel A. To increase the size of a computer memory B. To eliminate network protocols D. None of the above E. Check Answer Open question page Que: (33). Which multiplexing technique divides the available bandwidth into different frequency bands? FDM B. WDM C. TDM A. CDM D. None of the above E. Check Answer Open question page Que: (34). In Time Division Multiplexing, each input device is assigned a separate Wavelength C. Time slot B. Frequency band A. IP address D. None of the above E. Check Answer Open question page Que: (35). Which type of TDM assigns fixed time slots to each input device, even when it has no data to transmit? Synchronous TDM B. Statistical TDM A. Frequency Division Multiplexing C. Wavelength Division Multiplexing D. None of the above E. Check Answer Open question page Que: (36). Which multiplexing technique allocates time slots dynamically according to the availability of data? Statistical TDM B. FDM C. Synchronous TDM A. WDM D. None of the above E. Check Answer Open question page Que: (37). Which device combines multiple input signals into a single output signal? Demultiplexer A. Multiplexer B. Repeater C. Router D. None of the above E. Check Answer Open question page Que: (38). What is the function of a demultiplexer at the receiving end of a multiplexing system? To combine multiple signals A. To amplify signals B. To separate the combined signal into its original component signals C. To encrypt all transmitted data D. None of the above E. Check Answer Open question page Que: (39). Which multiplexing technique is commonly used in optical fibre communication by combining different wavelengths of light? WDM C. FDM B. TDM A. CDM D. None of the above E. Check Answer Open question page Que: (40). What is the major advantage of Statistical TDM over Synchronous TDM? It improves bandwidth utilization by allocating slots only to active devices B. It uses separate physical cables for every device C. It requires no synchronization A. It eliminates the need for a receiver D. None of the above E. Check Answer Open question page Que: (41). Transmission control protocol (A) is a connection-oriented protocol (B) uses a three-way handshake to establish a connection (C) receives data from application as a single stream (D) More than one of the above (E) None of the above Asked in BPSC TRE 3.0 is a connection-oriented protocol A. uses a three-way handshake to establish a connection B. receives data from application as a single stream C. More than one of the above D. None of the above E. Check Answer Open question page Que: (42). Which of the following is the correct sequence of TCP three-way handshake? SYN, ACK, FIN A. SYN, SYN-ACK, ACK B. ACK, SYN, FIN C. FIN, ACK, SYN D. None of the above E. Check Answer Open question page Que: (43). Which transport layer protocol provides connectionless communication? TCP A. UDP B. HTTP C. FTP D. None of the above E. Check Answer Open question page Que: (44). Which field in a TCP header is used to identify the application process at the destination? Window size C. Destination port number B. Sequence number A. Checksum D. None of the above E. Check Answer Open question page Que: (45). Which TCP mechanism is used to control the amount of data that a sender can transmit before receiving acknowledgements? Routing C. Encryption B. Flow control A. Multiplexing D. None of the above E. Check Answer Open question page Que: (46). Which TCP header field is primarily used to ensure reliable and ordered delivery of data? Urgent pointer A. Window size C. Sequence number B. Source port D. None of the above E. Check Answer Open question page Que: (47). Which TCP flag is used to terminate an established connection? FIN C. SYN A. ACK B. PSH D. None of the above E. Check Answer Open question page Que: (48). Which protocol is generally preferred for real-time applications where low latency is more important than guaranteed delivery? UDP B. FTP C. TCP A. SMTP D. None of the above E. Check Answer Open question page Que: (49). What is the size of the minimum TCP header without options? 32 bytes C. 20 bytes B. 8 bytes A. 40 bytes D. None of the above E. Check Answer Open question page Que: (50). Which TCP mechanism is used to detect transmission errors in a segment? Port number B. Sequence number C. Checksum A. Window size D. None of the above E. Check Answer Open question page Que: (51). An endpoint of an inter-process communication flow across a computer network is called Asked in BPSC TRE 3.0 pipe B. port C. socket A. More than one of the above D. None of the above E. Check Answer Open question page Que: (52). Which combination uniquely identifies a TCP connection between two endpoints? Source IP address only A. Destination port only B. Source IP, source port, destination IP and destination port C. MAC address only D. None of the above E. Check Answer Open question page Que: (53). Which system call is commonly used by a server to wait for incoming connection requests on a TCP socket? close() C. listen() A. send() B. recv() D. None of the above E. Check Answer Open question page Que: (54). Which socket function is used by a TCP server to accept an incoming client connection? connect() C. bind() A. accept() B. socket() D. None of the above E. Check Answer Open question page Que: (55). Which socket system call is used by a client to initiate a connection with a TCP server? bind() B. connect() C. listen() A. accept() D. None of the above E. Check Answer Open question page Que: (56). Which socket function associates a socket with a specific local IP address and port number? bind() A. accept() C. listen() B. recv() D. None of the above E. Check Answer Open question page Que: (57). Which socket type is generally used for connection-oriented TCP communication? SOCK_STREAM B. SOCK_RAW C. SOCK_DGRAM A. SOCK_PACKET D. None of the above E. Check Answer Open question page Que: (58). Which socket type is commonly associated with UDP communication? SOCK_DGRAM B. SOCK_SEQPACKET C. SOCK_STREAM A. SOCK_RDM D. None of the above E. Check Answer Open question page Que: (59). Which protocol is responsible for assigning logical port numbers to application processes in TCP/IP communication? IP A. TCP and UDP B. ARP C. ICMP D. None of the above E. Check Answer Open question page Que: (60). Which of the following is the correct order of basic TCP server socket operations? socket(), bind(), listen(), accept() A. bind(), socket(), accept(), listen() B. listen(), socket(), bind(), accept() C. accept(), listen(), bind(), socket() D. None of the above E. Check Answer Open question page Que: (61). Which transmission media provides the highest transmission speed in a network? Asked in BPSC TRE 3.0 Twisted-pair cable B. Coaxial cable A. Optical fiber C. More than one of the above D. None of the above E. Check Answer Open question page Que: (62). Which type of optical fibre allows light to travel through multiple propagation paths? Plastic-coated fibre only C. Multimode fibre B. Single-mode fibre A. Coaxial fibre D. None of the above E. Check Answer Open question page Que: (63). Which component of an optical fibre is responsible for confining light within the core? Cladding A. Jacket B. Buffer coating C. Outer sheath D. None of the above E. Check Answer Open question page Que: (64). Which phenomenon is responsible for the transmission of light through an optical fibre? Refraction only B. Total internal reflection C. Reflection only A. Diffraction D. None of the above E. Check Answer Open question page Que: (65). Which type of twisted-pair cable provides better protection against electromagnetic interference? Coaxial cable C. Shielded Twisted Pair (STP) B. Unshielded Twisted Pair (UTP) A. Flat cable D. None of the above E. Check Answer Open question page Que: (66). Which transmission medium consists of a central conductor surrounded by an insulating layer and metallic shield? Twisted-pair cable A. Optical fibre B. Coaxial cable C. Infrared medium D. None of the above E. Check Answer Open question page Que: (67). Which transmission medium is least affected by electromagnetic interference? Coaxial cable B. Optical fibre C. Twisted-pair cable A. Unshielded copper cable D. None of the above E. Check Answer Open question page Que: (68). Which device converts electrical signals into optical signals in a fibre-optic communication system? Photodetector A. Repeater only C. Optical transmitter B. Router D. None of the above E. Check Answer Open question page Que: (69). Which type of optical fibre is most suitable for long-distance, high-bandwidth communication? Multimode graded-index fibre B. Multimode step-index fibre A. Single-mode fibre C. Plastic optical fibre D. None of the above E. Check Answer Open question page Que: (70). What is the main function of the cladding in an optical fibre? To generate electrical signals A. To increase electrical resistance C. To protect and confine light within the core B. To convert light into sound D. None of the above E. Check Answer Open question page
