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Computer Networks Practice Test: OSI Model - Network Layer
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Avg score: 10% • Most missed: “An OSPF router receives an LSA. The router checks its sequence number and finds …”
Network Layer topics include: OSPF and its configuration, datagram networks, firewalls, ethernet, network management and utilities. The network layer is a part of online communication that connects and transfers data packets between different networks or devices. It's the third layer of the OSI model.  The network layer's functions include: Source-to-destination delivery: The network layer is responsible for delivering packets across multiple networks. Managing logical paths: The network layer manages and selects the best logical path for data transfer between nodes. Containing the... Show more
Computer Networks Practice Test: OSI Model - Network Layer
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25 Questions

1. A proxy firewall filters at _________
2. Which of the following is false with respect to the features of OSPF?
3. Which OSPF show command describes a list of OSPF adjacencies?
4. Performance management is closely related to _________
5. MAC address is of ___________
6. If you want to find the number of routers between a source and destination, the utility to be used is ___________
7. In OSPF, which protocol is used to discover neighbour routers automatically?
8. Which two commands are required for basic OSPF configuration?
9. High speed ethernet works on _________
10. An OSPF router receives an LSA. The router checks its sequence number and finds that this number is lower than the sequence number it already has. What does the router do with the LSA?
11. Ping sweep is a part of _________
12. In Network Management System, maps track each piece of hardware and its connection to the _________
13. Which field is NOT a field within an OSPF packet header?
14. Which of the following is true with respect to the delay in datagram networks?
15. An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called _______
16. In OSPF database descriptor packet, if there are more database descriptor packets in the flow, ‘M’ field is set to ____________
17. The maximum size of payload field in ethernet frame is __________
18. A firewall is installed at the point where the secure internal network and untrusted external network meet which is also known as __________
19. At which interval does OSPF refresh LSAs?
20. Choose the wrong statement from the following.
21. A packet filter firewall filters at __________
22. Which of the following remains same in the header of the packet in a datagram network during the entire journey of the packet?
23. A point-to-point protocol over ethernet is a network protocol for __________
24. What tells a firewall how to reassemble a data stream that has been divided into packets?
25. A stateful firewall maintains a ___________ which is a list of active connections.

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