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Which of the following is false with respect to the features of OSPF
- a)Support for fixed-length sunbathing by including the subnet mask in the routing message
- b)More flexible link cost than can range from 1 to 65535
- c)Use of designated router
- d)Distribution of traffic over multiple paths that have equal cost to the destination
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following is false with respect to the features of OSPFa)...
Answer: a
Explanation: Support for variable-length sunbathing by including the subnet mask in the routing message.
Explanation: Support for variable-length sunbathing by including the subnet mask in the routing message.
Most Upvoted Answer
Which of the following is false with respect to the features of OSPFa)...
False Statement: Option A - Support for fixed-length subnetting by including the subnet mask in the routing message.
Explanation:
OSPF (Open Shortest Path First) is a link-state routing protocol that is widely used in computer networks. It has several features that make it a robust and efficient routing protocol. However, one of the features mentioned in option A is false.
Support for fixed-length subnetting by including the subnet mask in the routing message:
- The subnet mask is a crucial component in IP networking that helps determine the network and host portions of an IP address.
- OSPF does not include the subnet mask in the routing message.
- Instead, OSPF relies on the concept of network address aggregation to determine the network boundaries and advertise them to other routers.
- OSPF routers exchange Link State Advertisements (LSAs) that contain information about the network topology.
- Each LSA includes the IP address of the interface, but it does not include the subnet mask.
- The routers use the IP address and their own configured subnet mask to determine the network boundaries.
Other features of OSPF:
1. More flexible link cost:
- OSPF uses a metric called "cost" to determine the best path to a destination.
- The link cost is based on the bandwidth of the link and can range from 1 to 65535.
- Lower link costs represent faster and more desirable links.
2. Use of designated router:
- OSPF uses a designated router (DR) and backup designated router (BDR) to reduce the amount of OSPF traffic on a network.
- The DR is responsible for exchanging routing information with other routers within the same OSPF area.
- The DR and BDR are elected based on their interface priority, and the router with the highest priority becomes the DR.
3. Distribution of traffic over multiple paths:
- OSPF supports equal-cost multipath (ECMP) routing, which allows traffic to be distributed over multiple paths that have equal cost to the destination.
- This feature improves network performance and provides redundancy.
In conclusion, the false statement regarding the features of OSPF is option A - Support for fixed-length subnetting by including the subnet mask in the routing message. OSPF does not include the subnet mask in the routing message but relies on network address aggregation to determine the network boundaries.
Explanation:
OSPF (Open Shortest Path First) is a link-state routing protocol that is widely used in computer networks. It has several features that make it a robust and efficient routing protocol. However, one of the features mentioned in option A is false.
Support for fixed-length subnetting by including the subnet mask in the routing message:
- The subnet mask is a crucial component in IP networking that helps determine the network and host portions of an IP address.
- OSPF does not include the subnet mask in the routing message.
- Instead, OSPF relies on the concept of network address aggregation to determine the network boundaries and advertise them to other routers.
- OSPF routers exchange Link State Advertisements (LSAs) that contain information about the network topology.
- Each LSA includes the IP address of the interface, but it does not include the subnet mask.
- The routers use the IP address and their own configured subnet mask to determine the network boundaries.
Other features of OSPF:
1. More flexible link cost:
- OSPF uses a metric called "cost" to determine the best path to a destination.
- The link cost is based on the bandwidth of the link and can range from 1 to 65535.
- Lower link costs represent faster and more desirable links.
2. Use of designated router:
- OSPF uses a designated router (DR) and backup designated router (BDR) to reduce the amount of OSPF traffic on a network.
- The DR is responsible for exchanging routing information with other routers within the same OSPF area.
- The DR and BDR are elected based on their interface priority, and the router with the highest priority becomes the DR.
3. Distribution of traffic over multiple paths:
- OSPF supports equal-cost multipath (ECMP) routing, which allows traffic to be distributed over multiple paths that have equal cost to the destination.
- This feature improves network performance and provides redundancy.
In conclusion, the false statement regarding the features of OSPF is option A - Support for fixed-length subnetting by including the subnet mask in the routing message. OSPF does not include the subnet mask in the routing message but relies on network address aggregation to determine the network boundaries.
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