A network router is a vital networking device that directs data packets between computer networks, acting as a gateway to connect devices like computers, smartphones, and smart home systems to the internet. It operates by analyzing incoming data, determining the most efficient path, and forwarding it to the appropriate destination, ensuring smooth and secure communication. Routers often include features such as wireless connectivity (Wi-Fi), firewalls for protection against cyber threats, network address translation (NAT) to manage IP addresses, and Quality of Service (QoS) settings to prioritize traffic. In homes, offices, or large enterprises, routers facilitate reliable internet access, support multiple device connections, and help maintain network stability, making them essential for everyday digital activities.
Table of contents
- Part 1: OnlineExamMaker AI quiz generator – Save time and efforts
- Part 2: 20 network router quiz questions & answers
- Part 3: Save time and energy: generate quiz questions with AI technology
Part 1: OnlineExamMaker AI quiz generator – Save time and efforts
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Part 2: 20 network router quiz questions & answers
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1. Question: What is the primary function of a router in a network?
Options:
A. To connect devices within the same local network
B. To forward data packets between different networks
C. To provide power to network devices
D. To store and manage user data
Answer: B
Explanation: A router operates at the network layer (Layer 3) of the OSI model, directing packets based on IP addresses to enable communication between distinct networks.
2. Question: Which component of a router is responsible for storing the routing table?
Options:
A. RAM
B. ROM
C. Flash memory
D. CPU
Answer: A
Explanation: RAM holds the active routing table, which is dynamically updated based on network changes, allowing the router to make forwarding decisions.
3. Question: What does the term “default gateway” refer to in a router configuration?
Options:
A. The primary IP address of the router
B. The path used when no specific route is found
C. A backup routing protocol
D. The router’s administrative interface
Answer: B
Explanation: The default gateway is the IP address that packets are sent to when the destination is not in the local network, typically pointing to the router.
4. Question: Which routing protocol uses hop count as its metric?
Options:
A. OSPF
B. EIGRP
C. RIP
D. BGP
Answer: C
Explanation: RIP (Routing Information Protocol) measures the best path based on the number of hops, with a maximum limit of 15 hops.
5. Question: What is NAT primarily used for in routers?
Options:
A. To encrypt data packets
B. To translate private IP addresses to public ones
C. To compress network traffic
D. To filter incoming packets
Answer: B
Explanation: NAT allows multiple devices on a local network to share a single public IP address, conserving IPv4 addresses and enhancing security.
6. Question: In a router, what does the ARP table store?
Options:
A. IP addresses and their corresponding MAC addresses
B. Routing paths to different networks
C. User authentication details
D. Firewall rules
Answer: A
Explanation: The ARP (Address Resolution Protocol) table maps IP addresses to MAC addresses, enabling routers to deliver packets to the correct device on the local network.
7. Question: Which type of router is commonly used in home networks?
Options:
A. Core router
B. Edge router
C. Distribution router
D. SOHO router
Answer: D
Explanation: SOHO (Small Office/Home Office) routers are designed for consumer use, providing features like Wi-Fi, firewall, and basic routing for small-scale networks.
8. Question: What happens during a routing loop in a network?
Options:
A. Packets are delivered faster
B. Packets circulate indefinitely between routers
C. The network bandwidth increases
D. All connections are terminated
Answer: B
Explanation: A routing loop occurs when packets are misdirected in a cycle due to incorrect routing information, leading to network inefficiency.
9. Question: Which command is used to display the routing table on a Cisco router?
Options:
A. show ip interface
B. show running-config
C. show ip route
D. show version
Answer: C
Explanation: The “show ip route” command displays the current routing table, including learned routes and their metrics.
10. Question: What is the purpose of a router’s firmware?
Options:
A. To provide physical connectivity
B. To manage the router’s operating system and updates
C. To store user files
D. To handle wireless signals
Answer: B
Explanation: Firmware is the embedded software that controls the router’s functions, including routing, security, and interface management.
11. Question: In OSPF, what does the term “area” refer to?
Options:
A. A physical location of the router
B. A logical grouping of routers for hierarchical routing
C. A type of network cable
D. A backup path for packets
Answer: B
Explanation: OSPF divides networks into areas to improve scalability and reduce routing overhead by summarizing routes within each area.
12. Question: What is the maximum number of hosts in a /24 subnet?
Options:
A. 254
B. 512
C. 1024
D. 65,536
Answer: A
Explanation: A /24 subnet (with 24 bits for the network) provides 256 total addresses, minus the network and broadcast addresses, leaving 254 usable hosts.
13. Question: Which feature on a router helps prevent unauthorized access?
Options:
A. DHCP
B. Firewall
C. DNS
D. VLAN
Answer: B
Explanation: A firewall on a router filters incoming and outgoing traffic based on predefined rules, protecting the network from potential threats.
14. Question: What is BGP primarily used for?
Options:
A. Routing within a local network
B. Exchanging routing information between different autonomous systems
C. Managing internal device connections
D. Optimizing wireless signals
Answer: B
Explanation: BGP (Border Gateway Protocol) is an exterior gateway protocol that facilitates routing between independent networks, such as those of different ISPs.
15. Question: How does a router handle broadcast traffic?
Options:
A. It forwards broadcasts to all connected networks
B. It blocks broadcasts to prevent network floods
C. It converts broadcasts to unicasts
D. It only processes broadcasts on the local interface
Answer: D
Explanation: Routers do not forward broadcast traffic beyond the local network segment, as broadcasts are meant for devices within the same broadcast domain.
16. Question: What is the role of a router’s interface in IP configuration?
Options:
A. To assign dynamic IP addresses
B. To connect to other networks and assign IP addresses to that interface
C. To encrypt all data passing through
D. To monitor network speed
Answer: B
Explanation: Each router interface has its own IP address, allowing it to connect to networks and facilitate communication between them.
17. Question: Which protocol is used for dynamic routing updates?
Options:
A. HTTP
B. FTP
C. RIP or OSPF
D. TCP
Answer: C
Explanation: Protocols like RIP and OSPF enable routers to exchange routing information dynamically, adapting to network changes without manual intervention.
18. Question: What does a router do when it receives a packet with an unknown destination?
Options:
A. Drops the packet immediately
B. Forwards it to the default gateway
C. Broadcasts it to all interfaces
D. Stores it for later delivery
Answer: A
Explanation: If a router cannot find a matching route in its table, it discards the packet and may send an ICMP error message back to the source.
19. Question: In a wireless router, what is the function of SSID?
Options:
A. To encrypt wireless traffic
B. To identify the network name for devices to connect
C. To set the transmission speed
D. To manage connected devices
Answer: B
Explanation: SSID (Service Set Identifier) is the name of the wireless network, allowing users to distinguish and select the correct network for connection.
20. Question: How can you troubleshoot a router that is not routing traffic?
Options:
A. Check the physical connections and verify the routing table
B. Restart the network devices
C. Update the router’s firmware
D. All of the above
Answer: D
Explanation: Troubleshooting involves multiple steps, including checking connections, examining the routing table, and ensuring the router is updated to resolve issues.
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