50 multiple-choice questions (MCQs) covering the topic of Network Devices for TNPSC Group II Non-Interview Technical Posts. Each question includes the correct answer and a brief explanation, reflecting the level and style suitable for technical competitive exams:
MCQs: Network Devices
Which device connects two different networks and directs data packets between them?
A) Switch
B) Router
C) Hub
D) Bridge
Answer: B
Explanation: A router connects and directs traffic between multiple networks.Which network device broadcasts incoming data to all its ports?
A) Switch
B) Router
C) Hub
D) Bridge
Answer: C
Explanation: A hub sends data to all ports, not just the destination.A device that operates at the Data Link layer (OSI Layer 2) is a:
A) Router
B) Switch
C) Modem
D) Firewall
Answer: B
Explanation: Switches function at OSI Layer 2.Which of the following provides wireless connectivity to a LAN?
A) Switch
B) Hub
C) Access Point
D) Bridge
Answer: C
Explanation: Access Points offer Wi-Fi access to LANs.Which network device converts digital data to analog for transmission over telephone lines?
A) Firewall
B) Switch
C) Modem
D) Router
Answer: C
Explanation: Modems modulate and demodulate signals.Which device extends the coverage of a network by re-amplifying signals?
A) Modem
B) Repeater
C) Switch
D) Access Point
Answer: B
Explanation: Repeaters regenerate weak signals.A device that connects two LAN segments and filters traffic is called:
A) Router
B) Bridge
C) Hub
D) Firewall
Answer: B
Explanation: Bridges connect segments and filter traffic.Which device primarily filters network traffic for security purposes?
A) Access Point
B) Hub
C) Firewall
D) Modem
Answer: C
Explanation: Firewalls manage/filter traffic based on security rules.A device that translates data between networks using different protocols is called a:
A) Bridge
B) Gateway
C) Switch
D) Repeater
Answer: B
Explanation: Gateways convert between different protocols.Which of these reduces network collisions in a LAN?
A) Hub
B) Switch
C) Firewall
D) Modem
Answer: B
Explanation: Switches send data only to target devices, reducing collisions.A point of access for wireless clients in a wired network is:
A) Repeater
B) Access Point
C) Hub
D) Router
Answer: BWhich network device uses MAC addresses to forward data?
A) Switch
B) Hub
C) Router
D) Modem
Answer: AThe main purpose of a network hub is to:
A) Route data
B) Boost signals
C) Broadcast data to all ports
D) Firewall protection
Answer: CWhich device separates broadcast domains in a network?
A) Switch
B) Router
C) Repeater
D) Hub
Answer: BWhich device connects computers in a star topology?
A) Switch
B) Bridge
C) Hub
D) Both A and C
Answer: D
Explanation: Both hubs and switches are used in star topologies.The OSI layer at which routers operate is:
A) Physical
B) Data Link
C) Network
D) Application
Answer: CWhich of these is NOT a function of a modern router?
A) NAT translation
B) Packet switching
C) Data encryption
D) Hard disk storage
Answer: DA device placed at branch offices to connect to the main network is called:
A) Access Point
B) Hub
C) Router
D) Bridge
Answer: CSwitches can work at which OSI layers?
A) Layer 1
B) Layer 2
C) Layer 3 (Multilayer)
D) Both B and C
Answer: DWhich device increases the number of available ports in a network?
A) Modem
B) Switch
C) Router
D) Firewall
Answer: BWhat does a modem do?
A) Converts digital signals to analog and vice versa
B) Routes traffic
C) Broadcasts data
D) Filters viruses
Answer: AWhich device maintains a table of MAC addresses for packet delivery?
A) Hub
B) Switch
C) Modem
D) Repeater
Answer: BThe primary device to connect a computer to an ISP is:
A) Router
B) Hub
C) Switch
D) Modem
Answer: DA VLAN (Virtual LAN) can be created using:
A) Hub
B) Repeater
C) Switch
D) Modem
Answer: CWhich device is essential for network security?
A) Access Point
B) Firewall
C) Hub
D) Repeater
Answer: BA repeater functions at OSI Layer:
A) 1
B) 2
C) 3
D) 4
Answer: AMost home Wi-Fi routers combine the functions of:
A) Only router
B) Router and switch
C) Router, switch, and access point
D) Only access point
Answer: CWhich device is used to connect different physical media types?
A) Switch
B) Hub
C) Media Converter
D) Repeater
Answer: CA device that keeps the network secure from unauthorized access:
A) Firewall
B) Switch
C) VLAN
D) Modem
Answer: AWhich allows only specific devices to communicate by checking MAC addresses?
A) Switch
B) Bridge
C) Hub
D) Router
Answer: ABackbone networks in organizations are primarily built using:
A) Hub
B) Router
C) Switch
D) Repeater
Answer: CA router typically has which of the following addresses?
A) IP address
B) MAC address
C) Both A and B
D) DNS address
Answer: CThe term ‘collision domain’ is associated with:
A) Hub
B) Bridge
C) Switch
D) All of the above
Answer: D
Explanation: All devices manage collision domains, but in different ways.Which device’s ports create separate collision domains but a shared broadcast domain?
A) Switch
B) Router
C) Access Point
D) Hub
Answer: AA device used to connect a LAN to a WAN:
A) Switch
B) Router
C) Bridge
D) Repeater
Answer: BWhat is the main limitation of a hub compared to a switch?
A) Slower speed
B) More traffic collisions
C) Sends data to all ports
D) All of the above
Answer: DNetwork segmentation for performance is mostly done using:
A) Hub
B) Bridge
C) Switch
D) Modem
Answer: CWhich device regenerates and amplifies signals to prevent data loss?
A) Repeater
B) Switch
C) Router
D) Hub
Answer: AWhich network device is used for connecting network segments at the physical layer?
A) Hub
B) Repeater
C) Switch
D) Bridge
Answer: BTo isolate network traffic for security and performance, you would use:
A) VLAN-capable switch
B) Hub
C) Repeater
D) Dumb switch
Answer: AThe first network device to receive data from an external network is usually the:
A) Switch
B) Router
C) Firewall
D) Client PC
Answer: BA hardware firewall is often positioned between:
A) PC and switch
B) Router and ISP
C) Local network and the internet
D) Printer and network
Answer: CA wireless repeater is used to:
A) Encrypt signals
B) Extend Wi-Fi coverage
C) Create new IP addresses
D) Connect hubs
Answer: BNetwork Address Translation (NAT) is performed by:
A) Switch
B) Router
C) Modem
D) Hub
Answer: BWhich device is essential for creating a secure VPN connection in a workplace?
A) Hub
B) Switch
C) Router
D) Gateway or Firewall
Answer: DWhat is the main function of an access point?
A) Manage wired connections
B) Encrypt data
C) Connect wireless devices to a network
D) Work as firewall
Answer: CWhich device reduces the number of broadcast domains?
A) Router
B) Switch
C) Access Point
D) Repeater
Answer: AData packets are forwarded based on IP addresses by:
A) Switch
B) Bridge
C) Router
D) Hub
Answer: CA network device that enables computers to communicate across different protocols:
A) Bridge
B) Router
C) Gateway
D) Switch
Answer: CTo interconnect two LANs with different architectures, use a:
A) Bridge
B) Switch
C) Repeater
D) Gateway
Answer: D
These MCQs comprehensively cover the definitions, functions, and differences among network devices, aligning with the TNPSC technical syllabus and question style.