29 Questions
What is IP Routing?
The process of forwarding a packet from its source to its destination through a routed network
What is the purpose of a Routing Protocol?
To transfer information learned by each router to other routers to build the routing table
What is OSPF?
A Routing Protocol that selects the best path to transfer information between routers
What is an Autonomous System (AS)?
A collection of devices under the same administrative authority
What is the purpose of Dynamic Routing?
To find the best path to the destination when multiple paths are available
What are the OSPF Neighbor States?
Down, Init, Two-way, Exstart, Exchange, Loading, and Full
What is a Router ID?
A unique ID in the routing domain expressed as an IP address that is essential in selecting the best path to the destination network
What is the purpose of a Routing Protocol?
To build the routing table by transferring information between routers
Which Routing Protocol uses a link header protocol ID number 89?
OSPF
What is the purpose of the Router ID in OSPF?
To select the best path to the destination network using a single protocol metric
What is the function of a Loopback Interface?
To provide stability to the Router ID using a virtual interface
What are the OSPF Neighbor States?
Down, Init, Two-way, Exstart, Exchange, Loading, and Full
What is the difference between Static and Dynamic Routing?
Static Routing is configured manually, while Dynamic Routing is configured automatically.
What is an Autonomous System?
A collection of devices under the same administrative authority
What is the default priority value for OSPF routers?
1
What happens if no Hello packet is received from an adjacent router after the Dead interval?
The router removes the adjacent router from its database
What is the formula to calculate the OSPF cost for a 10 Mbps Ethernet?
100 Mbps / 10 Mbps = 10
What is the purpose of the Designated Router (DR) in multi-access networks such as Ethernet?
To prevent many neighbor relationships on the same physical segment
What type of LSA is generated by the ABR and flooded to other areas?
Summary LSA
Question 1
What is the purpose of electing a Designated Router (DR) in OSPF multi-access networks?
Answer 1
To prevent the possibility of many neighbor relationships on the same physical segment.
Question 2
How is the Designated Router (DR) elected in OSPF?
Answer 2
The router with the highest priority or highest Router-ID (if priorities are equal).
Question 3
What happens if the Designated Router (DR) fails in OSPF?
Answer 3
The Backup Designated Router (BDR) becomes the new DR, a new BDR is elected, and the previous DR returns as a DRother.
Question 4
What are the three parameters that must be equal in both OSPF routers to establish a neighboring adjacency?
Answer 4
Hello interval (10 sec), Dead interval (40 sec), and Network type.
Question 5
What are the advantages of using OSPF areas?
Answer 5
Smaller database about the link state and the ability to isolate the unstable area.
Study Notes
IP Routing and OSPF Protocol
- IP Routing is the process of forwarding a packet from its source to its destination through a routed network.
- Routing Protocol, such as RIP and OSPF, is used to transfer information learned by each router to other routers to build the routing table.
- OSPF is a Routing Protocol that selects the best path to transfer information between routers.
- Routed Protocol refers to IP packets that are routed between the routers, such as IPv4 and IPv6.
- Autonomous System is a collection of devices under the same administrative authority.
- There are three types of Routing Protocol: Static Routing, Dynamic Routing, and Hybrid Routing.
- Dynamic Routing is used if multiple paths to the destination are available, and there are four Dynamic Routing Protocols: Distance Vector Protocols, Link-State Protocols, RIPv1, and OSPF.
- OSPF is a link-state routing protocol that uses a link header protocol ID number 89 and has five packet types: Hello, Database Description, Link State Request, Link State Update, and Link State Acknowledgement.
- OSPF Neighbor States are Down, Init, Two-way, Exstart, Exchange, Loading, and Full.
- Every router has a unique ID in the routing domain expressed as an IP address, called the Router ID, and can be manually configured or chosen based on the highest IP of loopback or physical interfaces.
- Loopback Interface is a virtual interface that provides stability to the Router ID where it is virtual and cannot fail.
- The Router ID is essential in selecting the best path to the destination network using a single protocol metric, such as the number of hops in the RIP protocol.
Test your knowledge on IP Routing and OSPF Protocol with this informative quiz! Learn about the process of forwarding packets through a routed network, the different types of routing protocols, and the features of OSPF, a popular link-state routing protocol. This quiz covers topics such as autonomous systems, routing tables, dynamic routing, OSPF packet types, neighbor states, and the importance of the router ID. Whether you're a networking professional or just interested in learning more about IP routing, this quiz is perfect for
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
