1 How does routing work
2 What is a routing table
3 What is a default route
4 What is a loopback entry
5 What is static routing
6 What is dynamic routing
7 What is interior routing
8 What is exterior routing
9 What is IGP
10 What is EGP
11 What is r

Question

1. How does routing work?
2. What is a routing table?
3. What is a default route?
4. What is a loopback entry?
5. What is static routing?
6. What is dynamic routing?
7. What is interior routing?
8. What is exterior routing?
9. What is IGP?
10. What is EGP?
11. What is routing metrics?
12. What is hop count?
13. What is bandwidth?
14. What is throughput?
15. What is link utilization?
16. What is load?
17. What is MTU?
18. What is packet loss?
19. What is latency?
20. What is reliability?
21. What are the 3 routing protocols categories?
22. What is distance vector routing?
23. What is link state routing?
24. What is convergence?

Mary Morris · Answer

Certainly! Here are brief and clear explanations for each of your questions related to routing:

1. How does routing work?

Routing is the process by which data packets are forwarded from their source to their destination across a network. Routers examine the destination IP address of a packet, consult their routing table, and determine the best path to forward the packet toward its destination.

2. What is a routing table?

A routing table is a database in a router or a networked computer that lists the routes to particular network destinations. Each row in the table typically includes information such as the destination network, subnet mask, next hop, and route metric.

3. What is a default route?

A default route is a catch-all route that routers use when there is no specific route to a destination in the routing table. It typically directs all unspecified traffic to a single gateway, usually defined by 0.0.0.0/0 in IPv4 networks.

4. What is a loopback entry?

A loopback entry refers to a route that directs traffic destined for a loopback address (most commonly 127.0.0.1 in IPv4). The loopback interface is a virtual network interface used internally by the host system for testing and management.

5. What is static routing?

Static routing involves manually configuring fixed routes in a router's routing table. These routes do not change unless manually altered, providing simplicity but lacking adaptability to network changes.

6. What is dynamic routing?

Dynamic routing uses protocols to automatically adjust the routes in a routing table based on network changes. Examples include RIP, OSPF, and BGP, which dynamically select the best paths based on current network conditions.

7. What is interior routing?

Interior routing refers to the process of routing within a single autonomous system (AS). Protocols like OSPF, RIP, and EIGRP are commonly used for interior routing.

8. What is exterior routing?

Exterior routing involves routing between different autonomous systems. The predominant exterior routing protocol is BGP (Border Gateway Protocol).

9. What is IGP?

IGP (Interior Gateway Protocol) is used for exchanging routing information within a single autonomous system (AS). Examples include OSPF and EIGRP.

10. What is EGP?

EGP (Exterior Gateway Protocol) is used to exchange routing information between different autonomous systems. BGP is the primary EGP used today.

11. What are routing metrics?

Routing metrics are values used by routing protocols to determine the best path for data packets. Metrics can include parameters like hop count, bandwidth, delay, reliability, and load.

12. What is hop count?

Hop count is the number of intermediate devices (like routers) a packet passes through from source to destination. It is a common metric used by distance vector routing protocols.

13. What is bandwidth?

Bandwidth refers to the maximum rate at which data can be transmitted over a network connection, usually measured in bits per second (bps).

14. What is throughput?

Throughput is the actual rate at which data is successfully transmitted over a network connection. It can be influenced by factors like network congestion, errors, and latency.

15. What is link utilization?

Link utilization refers to the extent to which the total available capacity of a network link is used. High utilization indicates heavy traffic, while low utilization indicates light traffic.

16. What is load?

Load refers to the amount of data traffic or number of packets being handled by a network device or link at a given time.

17. What is MTU?

MTU (Maximum Transmission Unit) is the largest size of a data packet that can be transmitted over a network path without needing fragmentation.

18. What is packet loss?

Packet loss occurs when one or more data packets fail to reach their destination, typically due to network congestion, errors, or hardware malfunctions.

19. What is latency?

Latency is the time it takes for a data packet to travel from the source to the destination. It is typically measured in milliseconds (ms) and can be influenced by distance, network congestion, and routing path.

20. What is reliability?

Reliability refers to the ability of a network to consistently perform its intended functions, typically measured by factors like uptime, error rates, and packet delivery success rates.

21. What are the 3 routing protocol categories?

The three main categories of routing protocols are:

Distance Vector Protocols (e.g., RIP)
Link State Protocols (e.g., OSPF)
Path Vector Protocols (e.g., BGP)

22. What is distance vector routing?

Distance vector routing protocols calculate the best path to a destination based on distance metrics (like hop count). Routers periodically share routing information with their neighbors. Examples include RIP and IGRP.

23. What is link state routing?

Link state routing protocols maintain a complete map of the network's topology, allowing routers to compute shortest paths independently using algorithms like Dijkstra's. Examples include OSPF and IS-IS.

24. What is convergence?

Convergence is the process by which all routers within a network update their routing tables and reach a consistent view of the network topology after a change or failure. Rapid convergence is crucial for maintaining network stability and reliability.

These concise explanations should provide a solid foundation for understanding routing and related concepts. If you have more specific questions or need further details, feel free to ask!

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