InOSPF (Open Shortest Path First), areas are used to segment a network into smaller, more manageable pieces to improve scalability. By dividing a network into areas, OSPF can reduce the size of thelink-state database (LSDB), which helps routers process updates more efficiently. Step-by-Step Breakdown: * Purpose of OSPF Areas:OSPF areas allow for hierarchical routing within the OSPF domain. Routers in the same area have identical LSDBs, but routers in different areas do not exchange full link-state information. Instead, they exchange summarized routes, which reduces the LSDB size and CPU /memory usage. * Benefits:Reducing the LSDB size improves scalability and ensures faster convergence in larger networks. Area 0 is the backbone area, and all other areas must connect to it, forming a hierarchical structure. Juniper Reference: * OSPF Configuration: Areas in OSPF are configured to optimize network performance by limiting the scope of link-state advertisements (LSAs) to within an area.
Question 47
What is the main advantage of using MACsec?
Correct Answer: D
Question 48
How does a layer 2 switch populate its bridge table?
Correct Answer: C
Question 49
Which statement is correct about the OSPF link-state database?
Correct Answer: D
Question 50
Which BGP message type is used to establish peering sessions?
