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Which of the following are true regarding OSPF areas?
- You must have separate loopback interfaces configured in each area.
- The numbers you can assign an area go up to 65,535.
- The backbone area is also called area 0.
- If your design is hierarchical, then you don't need multiple areas.
- All areas must connect to area 0.
- a)1 only
- b)1 and 2 only
- c)3 and 4 only
- d)3, 4 and 5
Correct answer is option 'D'. Can you explain this answer?
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Which of the following are true regarding OSPF areas? You must have s...
Loopback interfaces are created on a router, and the highest IP address on a loopback (logical) interface becomes the RID of the router but has nothing to do with areas and is optional, so (1) is wrong. The numbers you can create an area with are from 0 to 4,294,967,295 option (2) is wrong. The backbone area is called area 0, so option (3) is correct. All areas must connect to area 0, so option (5) is correct. If you have only one area, it must be called area 0. This leaves option (4), which must be correct; it doesn't make much sense, but it is the best answer.
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Which of the following are true regarding OSPF areas? You must have s...
Key Points:
- OSPF (Open Shortest Path First) is a link-state routing protocol used in IP networks.
- OSPF divides the network into areas for better scalability and efficiency.
- Each area has a unique identifier, called an area number.
- The backbone area, also known as area 0, is the central area that connects all other areas.
- Loopback interfaces are not required in each area.
- Hierarchical design can still benefit from using multiple areas.
- All areas must connect to the backbone area.
Explanation:
- OSPF uses areas to divide a large network into smaller units, improving scalability and reducing the amount of routing information that each router needs to process.
- Each area in OSPF is identified by a unique area number, which can range from 0 to 65,535.
- The backbone area, also known as area 0, is a special area that connects all other areas in OSPF. It is essential for the routing within the OSPF network.
- Loopback interfaces are not required in each area. Loopback interfaces are virtual interfaces used for management and fault tolerance purposes, but they are not mandatory in OSPF areas.
- Hierarchical network design, which involves dividing the network into multiple layers or levels, can still benefit from using multiple OSPF areas. It helps to separate different parts of the network and control the routing within each area.
- All OSPF areas must connect to the backbone area (area 0). This ensures connectivity between all areas and allows for inter-area routing.
Based on the above explanations, the correct statement is:
- All areas must connect to the backbone area (area 0).
Therefore, the correct answer is option 'D' - 3, 4, and 5.
- OSPF (Open Shortest Path First) is a link-state routing protocol used in IP networks.
- OSPF divides the network into areas for better scalability and efficiency.
- Each area has a unique identifier, called an area number.
- The backbone area, also known as area 0, is the central area that connects all other areas.
- Loopback interfaces are not required in each area.
- Hierarchical design can still benefit from using multiple areas.
- All areas must connect to the backbone area.
Explanation:
- OSPF uses areas to divide a large network into smaller units, improving scalability and reducing the amount of routing information that each router needs to process.
- Each area in OSPF is identified by a unique area number, which can range from 0 to 65,535.
- The backbone area, also known as area 0, is a special area that connects all other areas in OSPF. It is essential for the routing within the OSPF network.
- Loopback interfaces are not required in each area. Loopback interfaces are virtual interfaces used for management and fault tolerance purposes, but they are not mandatory in OSPF areas.
- Hierarchical network design, which involves dividing the network into multiple layers or levels, can still benefit from using multiple OSPF areas. It helps to separate different parts of the network and control the routing within each area.
- All OSPF areas must connect to the backbone area (area 0). This ensures connectivity between all areas and allows for inter-area routing.
Based on the above explanations, the correct statement is:
- All areas must connect to the backbone area (area 0).
Therefore, the correct answer is option 'D' - 3, 4, and 5.
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Which of the following are true regarding OSPF areas? You must have separate loopback interfaces configured in each area. The numbers you can assign an area go up to 65,535. The backbone area is also called area 0. If your design is hierarchical, then you don't need multiple areas. All areas must connect to area 0.a)1 onlyb)1 and 2 onlyc)3 and 4 onlyd)3, 4 and 5Correct answer is option 'D'. Can you explain this answer?
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