Bihar STET Computer Network PYQs – 2024

12 June 2024 – Shift II

Q1. A signal varies continuously with space and/or time. Such a signal is called:

A. Analog
B. Digital
C. Monologue
D. Multilogue

Answer: A. Analog

Explanation: An analog signal varies continuously with respect to time or space. Digital signals generally represent information using discrete levels.

This question is explicitly identified as Bihar STET C.S. 12.06.2024 (Shift-II).

Bihar STET Computer Network PYQs – 2023

12 September 2023 – Shift I

Q2. Contention-based MAC protocols are commonly used in:

A. Ethernet network
B. Token Ring networks
C. ATM networks
D. Point-to-Point networks

Answer: A. Ethernet network

Explanation: Ethernet uses contention-based access mechanisms, traditionally associated with CSMA/CD in shared Ethernet environments.

The source explicitly labels this question Bihar STET C.S. 12.09.2023 (Shift-I).

Q3. Data transmission using multiple pathways simultaneously is known as:

A. Parallel Transmission
B. Serial Transmission
C. Duplex Transmission
D. Half-duplex Transmission

Answer: A. Parallel Transmission

Explanation: In parallel transmission, multiple bits are transmitted simultaneously over multiple parallel paths/channels.

This question is identified as Bihar STET C.S. 12.09.2023 (Shift-I).

Bihar STET Computer Network PYQs – 2020

18 September 2020 – Shift I

Q4. Which of the following is a type of network topology?

A. Star Network
B. Ring Network
C. Hybrid Network
D. Singleton Network

Answer: D. Singleton Network

Explanation: Star, Ring and Hybrid are recognized network topologies. Singleton Network is not a standard network topology.

Q5. Identify the topology from the following description:

It is a hierarchical topology in which there are multiple branches and each branch can have one or more basic topologies and usually connects multiple LANs.

A. Bus topology
B. Tree topology
C. Star topology
D. Mesh topology

Answer: B. Tree topology

Explanation: Tree topology is hierarchical and can connect multiple star/bus-type segments and LANs.

The question is explicitly marked Bihar STET C.S. 2020 in the source.

Q6. Protocols are:

A. Agreements on how communication components and DTEs are to communicate
B. Logical communication channels for transferring data
C. Physical communication channels used for transferring data
D. None of these

Answer: A. Agreements on how communication components and DTEs are to communicate

Explanation: A protocol is a set of rules that determines how devices communicate and exchange data.

The question is explicitly identified as Bihar STET C.S. 2020.

Q7. Computer Network is:

A. Collection of hardware components and computers
B. Interconnected by communication channels
C. Sharing of resources and information
D. All of these

Answer: D. All of these

Explanation: A computer network involves interconnected devices communicating through channels and sharing information/resources.

This is explicitly labelled Bihar STET C.S. 2020.

Q8. Network of networks is called:

A. INTERANET
B. INTERNET
C. NETWORKING
D. COMMUNICATION

Answer: B. INTERNET

The question is identified as Bihar STET C.S. 18.09.2020 (Shift-I).

Q9. Which of the following is NOT a possible way of data exchange?

A. Simplex
B. Multiplex
C. Half-duplex
D. Full-duplex

Answer: B. Multiplex

Explanation: Simplex, half-duplex and full-duplex describe communication direction/mode. Multiplexing is a technique for combining multiple signals/data streams over a shared medium rather than a transmission-direction mode.

The question is explicitly labelled Bihar STET C.S. 2020.

Q10. Which of the following is a valid transmission mode?

A. Simplex
B. Half-duplex
C. Full-duplex
D. All of these

Answer: D. All of these

Note: Simplex, half-duplex and full-duplex are standard transmission modes.

Bihar STET Computer Network PYQs – 2019

2019 – Shift II

Q11. A ______ is a combination of hardware and software that facilitates the sharing of information between computing devices.

A. Network
B. Peripheral
C. Expansion board
D. Digital device

Answer: A. Network

The source explicitly identifies this question as Bihar STET C.S. 2019 (Shift-II).

Q12. Which of the following is the best description of a computer network?

A. Collection of independent computers
B. Interconnected computing devices
C. A collection of software programs
D. A group of peripheral devices only

Answer: B. Interconnected computing devices

Additional Bihar STET Network Questions Traceable in the 2019–2024 Paper Material

The following questions also appear in the Bihar STET Computer Science material and are important for preparation.

Q13. Which of the following is a type of network that shares the communication channel among all machines?

A. Broadcast network
B. Multicast network
C. Unicast network
D. None of these

Answer: A. Broadcast network

A broadcast network uses a common communication channel accessible to connected machines. The question is included in the networking question compilation alongside Bihar STET material.

Q14. Which device is used to connect multiple devices within the same LAN?

A. Router
B. Switch
C. Bridge
D. Modem

Answer: B. Switch

Explanation: A switch is commonly used to connect multiple devices within a LAN and forwards frames using MAC addresses.

Q15. A physical connection between the microprocessor, memory and other parts of a microcomputer is known as:

A. Path
B. Address bus
C. Route
D. All of these

Answer: A. Path

This question is explicitly labelled Bihar STET C.S. 2020 in the source.

Q16. Which mode allows transmission in both directions simultaneously?

A. Duplex
B. Half-duplex
C. Simplex
D. Half-simplex

Answer: A. Duplex / Full-duplex

Explanation: Full-duplex communication allows simultaneous transmission in both directions.

Q17. Which mode allows transmission in either direction but not simultaneously?

A. Duplex
B. Half-duplex
C. Simplex
D. Half-simplex

Answer: B. Half-duplex

Q18. Which transmission medium works on the principle of total internal reflection?

A. Optical fiber cable
B. Shielded twisted pair cable
C. Unshielded twisted pair cable
D. Coaxial cable

Answer: A. Optical fiber cable

Explanation: Optical fiber transmits light through the core using total internal reflection.

Q19. Fibre optics is an example of:

A. Guided Media
B. Unguided Media
C. Wireless Media
D. None of these

Answer: A. Guided Media

Q20. Which switching technique establishes a dedicated physical path between source and destination nodes?

A. Packet Switching
B. Message Switching
C. Physical Switching
D. Circuit Switching

Answer: D. Circuit Switching

Explanation: Circuit switching establishes a dedicated path before communication begins.

Q21. Which switching technique was used in ARPANET?

A. Message Switching
B. Circuit Switching
C. Packet Switching
D. Data Switching

Answer: A. Message Switching

The networking compilation identifies this as a historical networking question and distinguishes it from later packet-switching approaches.

Q22. Which device understands the format and contents of data and translates messages from one format to another?

A. Gateway
B. Hub
C. Switch
D. Router

Answer: A. Gateway

A gateway can perform protocol/format conversion between dissimilar systems.

Q23. Which device forwards data based on a MAC address?

A. Hub
B. Modem
C. Switch
D. Gateway

Answer: C. Switch

Explanation: A Layer-2 switch uses MAC addresses to make forwarding decisions.

Q24. What is the meaning of bandwidth in a network?

A. Transmission capacity of a communication channel
B. Connected computers in a network
C. Class of IP used in a network
D. Interconnected computers

Answer: A. Transmission capacity of a communication channel

Q25. Which of the following is NOT an example of unguided transmission media?

A. Radio transmission
B. Microwave transmission
C. Coaxial cable
D. Light transmission

Answer: C. Coaxial cable

Explanation: Coaxial cable is a guided/wired transmission medium.

Q26. Which device is needed to connect two computer systems if the systems use different protocols?

A. Repeater
B. Gateway
C. Bridge
D. Hub

Answer: B. Gateway

A gateway can connect networks/systems using different protocols.

Q27. Data transmission using multiple pathways simultaneously is called:

A. Parallel transmission
B. Serial transmission
C. Duplex transmission
D. Half-duplex transmission

Answer: A. Parallel transmission

This is one of the questions explicitly attributed to Bihar STET C.S. 12.09.2023 (Shift-I).

Q28. Which of the following internet access methods uses Wi-Fi technology to connect electronic devices through radio waves?

A. ISDN
B. Wi-Fi hotspots
C. Cable
D. Dial-up

Answer: B. Wi-Fi hotspots

Important Network Devices – PYQ Focus

Bihar STET questions repeatedly test the difference between network devices.

Q29. Which device operates primarily using MAC addresses?

A. Router
B. Switch
C. Gateway
D. Modem

Answer: B. Switch

Q30. Which device is primarily used for routing packets between different networks?

A. Hub
B. Switch
C. Router
D. Repeater

Answer: C. Router

Q31. Which device regenerates a signal to extend the communication distance?

A. Router
B. Repeater
C. Gateway
D. Switch

Answer: B. Repeater

Q32. Which device can connect networks using different protocols?

A. Hub
B. Gateway
C. Repeater
D. NIC

Answer: B. Gateway

Data Communication – Important PYQ Concepts

Q33. Which transmission mode allows communication in only one direction?

A. Simplex
B. Half-duplex
C. Full-duplex
D. Multiplex

Answer: A. Simplex

Examples include traditional keyboard-to-computer communication and some broadcast systems.

Q34. Which transmission mode allows communication in both directions, but not at the same time?

A. Simplex
B. Half-duplex
C. Full-duplex
D. Parallel

Answer: B. Half-duplex

Example: Walkie-talkie.

Q35. Which transmission mode allows simultaneous two-way communication?

A. Simplex
B. Half-duplex
C. Full-duplex
D. Serial

Answer: C. Full-duplex

Example: Telephone conversation.

Transmission Media – Important Questions

Q36. Which of the following is a guided transmission medium?

A. Radio
B. Microwave
C. Optical fiber
D. Infrared

Answer: C. Optical fiber

Q37. Which of the following is an unguided transmission medium?

A. Twisted pair
B. Coaxial cable
C. Optical fiber
D. Radio waves

Answer: D. Radio waves

Q38. Which cable is least affected by electromagnetic interference?

A. Twisted pair
B. Coaxial cable
C. Optical fiber
D. Copper cable

Answer: C. Optical fiber

Q39. Which transmission medium uses light for data transmission?

A. Coaxial cable
B. Twisted pair
C. Optical fiber
D. Radio

Answer: C. Optical fiber

Switching – Important Questions

Q40. Which switching technique uses a dedicated communication path?

A. Packet switching
B. Circuit switching
C. Message switching
D. Datagram switching

Answer: B. Circuit switching

Q41. In packet switching, data is:

A. Sent through a dedicated physical circuit
B. Divided into packets
C. Always sent as one complete message
D. Converted only into analog signals

Answer: B. Divided into packets

Q42. Datagram networks are:

A. Connection-oriented
B. Connectionless
C. Circuit-oriented
D. Analog networks

Answer: B. Connectionless

Q43. In virtual-circuit packet switching:

A. Every packet necessarily chooses an independent route
B. A logical path is established before packet transfer
C. No addressing is required
D. Data cannot be divided into packets

Answer: B. A logical path is established before packet transfer

Network Topology – Important Questions

Q44. In which topology are all computers connected to a central device?

A. Bus
B. Ring
C. Star
D. Mesh

Answer: C. Star

Q45. Which topology uses a single main communication cable?

A. Star
B. Bus
C. Ring
D. Mesh

Answer: B. Bus

Q46. Which topology provides a connection between every pair of nodes?

A. Bus
B. Ring
C. Star
D. Mesh

Answer: D. Mesh

Q47. Which topology has a hierarchical structure?

A. Ring
B. Bus
C. Tree
D. Mesh

Answer: C. Tree

Q48. What is the maximum number of links in a full mesh network containing n computers?

A. n
B. n − 1
C. n(n − 1)
D. n(n − 1)/2

Answer: D. n(n − 1)/2

MAC and Ethernet

Q49. Contention-based MAC protocols are commonly used in:

A. Ethernet networks
B. Token Ring networks
C. ATM networks
D. Point-to-point networks

Answer: A. Ethernet networks

This is an actual Bihar STET 12 September 2023 Shift-I-labelled question in the accessible source.

Q50. MAC stands for:

A. Media Access Control
B. Machine Access Code
C. Memory Access Control
D. Media Address Code

Answer: A. Media Access Control

Network Models

Q51. How many layers are present in the OSI reference model?

A. 4
B. 5
C. 7
D. 8

Answer: C. 7

Q52. Which OSI layer is responsible for routing?

A. Physical
B. Data Link
C. Network
D. Transport

Answer: C. Network

Q53. Which OSI layer uses MAC addresses?

A. Physical
B. Data Link
C. Network
D. Transport

Answer: B. Data Link

Q54. Which OSI layer provides end-to-end communication?

A. Physical
B. Network
C. Transport
D. Session

Answer: C. Transport

Q55. Which protocol suite is the foundation of Internet communication?

A. FTP
B. TCP/IP
C. HTTP
D. SMTP

Answer: B. TCP/IP

IP Addressing

Q56. The length of an IPv4 address is:

A. 16 bits
B. 32 bits
C. 64 bits
D. 128 bits

Answer: B. 32 bits

Q57. The length of an IPv6 address is:

A. 32 bits
B. 64 bits
C. 128 bits
D. 256 bits

Answer: C. 128 bits

Q58. Which protocol is used to map an IP address to a MAC address?

A. FTP
B. ARP
C. SMTP
D. HTTP

Answer: B. ARP

TCP and UDP

Q59. TCP is:

A. Connectionless
B. Connection-oriented
C. Hardware protocol
D. Routing protocol

Answer: B. Connection-oriented

Q60. UDP is:

A. Connection-oriented
B. Connectionless
C. Circuit-switched
D. Error-free by definition

Answer: B. Connectionless

Q61. Which protocol provides reliable, ordered delivery?

A. UDP
B. IP
C. TCP
D. ARP

Answer: C. TCP

Application Layer Protocols

Q62. Which protocol is primarily used for transferring files?

A. FTP
B. SMTP
C. ARP
D. ICMP

Answer: A. FTP

Q63. Which protocol is used for sending email?

A. FTP
B. SMTP
C. HTTP
D. ARP

Answer: B. SMTP

Q64. Which protocol is primarily associated with web communication?

A. HTTP
B. FTP
C. SMTP
D. ARP

Answer: A. HTTP

Q65. Which protocol is used for secure web communication?

A. HTTP
B. HTTPS
C. FTP
D. Telnet

Answer: B. HTTPS

Network Types

Q66. A network covering a small geographical area such as a building is:

A. LAN
B. MAN
C. WAN
D. PAN

Answer: A. LAN

Q67. A network covering a city or metropolitan area is:

A. LAN
B. MAN
C. WAN
D. PAN

Answer: B. MAN

Q68. A network covering a large geographical area is:

A. LAN
B. PAN
C. MAN
D. WAN

Answer: D. WAN

Wireless Networking

Q69. Which technology is commonly used for wireless LAN?

A. Wi-Fi
B. Ethernet cable
C. Coaxial cable
D. Optical fiber

Answer: A. Wi-Fi

Q70. Bluetooth is mainly designed for:

A. Long-distance WAN communication
B. Short-range wireless communication
C. Satellite communication
D. Fiber-optic communication

Answer: B. Short-range wireless communication

Bihar STET Computer Network – Year-wise Coverage

The chapterwise source confirms the separate 2024, 2023, 2020 and 2019 Bihar STET Computer Science papers and their shift structure.