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Networking Fundamentals Review | Router Address Change, OSI Layers, IP Packet Fields

Explore key concepts of routing and addressing in computer networks, including protocols, subnetting, routing metrics, and packet traversal. Learn about routers, switches, routing protocols, and subnet creation. Test your knowledge on IP addressing and routing tables.

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Networking Fundamentals Review | Router Address Change, OSI Layers, IP Packet Fields

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  1. CCNA 1 v3.1 Module 10 Review

  2. What is the address that is changed when a frame is received at a router interface? • MAC address

  3. What OSI layer offers reliable, connection-oriented data communication services? • transport

  4. What IP packet field will prevent endless loops? • time-to-live

  5. Which processes occur each time a packet is switched from one router interface to another? • encapsulation • de-encapsulation

  6. Which of the following are routed protocols? (Choose three.) • IP • BGP • XNS • RIP • OSPF • DECnet • IP • BGP • XNS • RIP • OSPF • DECnet

  7. How would you describe path determination at the network layer? • router compares available routing table information to select the best path

  8. What do routers use to exchange topological information? • routing protocols

  9. What are 3 metrics used with routing protocols? • delay • cost • reliability

  10. What are 2 link-state routing protocols? • OSPF • IS-IS

  11. What are 3 benefits of subnetting? • smaller broadcast domains • low-level security provided • increased address flexibility

  12. Given a host with the IP address 176.42.75.23 and a default subnet mask, to which network does the host belong? • 176.42.0.0

  13. A small company has a class C network license and needs to create eight usable subnets, each subnet capable of accommodating at least 14 hosts. What is the appropriate subnet mask? • 255.255.255.240

  14. How many bits are available for Class B host IP addresses using the default subnet mask? • 16

  15. What is true concerning the host bits of the network address and the broadcast address? • Host bits of the network address are all equal to 0. • Host bits of the broadcast address are all equal to 1.

  16. How many usable subnets are created by applying the subnet mask 255.255.255.0 to a Class B network? • 254

  17. What do you call the process that routers use to determine the subnet network address based upon a given IP address and subnet mask? • binary ANDing

  18. Which statements describe the effects broadcast storms have on networking equipment? (Choose two.) • Switches forward broadcast storms. • Switches block broadcasts. • Switches handle broadcasts in similar fashion to routers. • Routers can be segmented to increase bandwidth. • Routers block broadcasts. • Routers and switches provide security and bandwidth control to overcome broadcast storms. • Switches forward broadcast storms. • Switches block broadcasts. • Switches handle broadcasts in similar fashion to routers. • Routers can be segmented to increase bandwidth. • Routers block broadcasts. • Routers and switches provide security and bandwidth control to overcome broadcast storms.

  19. What information is listed in routing tables? (Choose three.) • Protocol types • Encapsulations • Metrics • MAC addresses • Inbound interfaces • Outbound interfaces • Protocol types • Encapsulations • Metrics • MAC addresses • Inbound interfaces • Outbound interfaces

  20. What is the routing metric for RIPv1? • hop

  21. Which statements describe Layer 2 and Layer 3 packet address changes as the packet traverses from router to router? (Choose two.) • Layer 3 header is removed and replaced at every Layer 3 device. • Layer 2 and Layer 3 addresses do not change when the packet traverse. • Layer 3 source and destination addresses do not change when the packet traverse. • Layer 2 frame header and trailer are removed and replaced at every Layer 3 device. • Layer 2 source and destination addresses do not change when the packet travels. • Layer 3 header is removed and replaced at every Layer 3 device. • Layer 2 and Layer 3 addresses do not change when the packet traverse. • Layer 3 source and destination addresses do not change when the packet traverse. • Layer 2 frame header and trailer are removed and replaced at every Layer 3 device. • Layer 2 source and destination addresses do not change when the packet travels.

  22. What are two differences between routers and switches? • Routers make forwarding decisions using IP addresses, but switches use MAC addresses. • Switches forward broadcasts and routers do not.

  23. What are two functions of a routing protocol? • provides processes for sharing route information • allows a router to communicate with other routers

  24. How many usable class C subnetworks are created with a subnet mask of 255.255.255.240? • 14

  25. Company XYZ uses a network address of 192.168.4.0. It uses the mask of 255.255.255.192 to create subnets. What is the maximum number of usable hosts in each subnet? • 62

  26. Which are the network and broadcast addresses when given an IP host address of 198.101.6.55/27? • Network = 198.101.6.32 • Broadcast = 198.101.6.63

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