You are implementing OSPF as the IGP using a single OSPF area design. The router memory usage for OSPF is too high. Which two methods can lower the Cisco 642-883 dumps OSPF memory usage? (Choose two.)
A. Enable OSPF synchronization
B. Implement multi-area OSPF
C. Enable OSPF sham links to reduce the number of LSAs
D. Implement route summarization on the ABRs
E. Enable route leaking between Level 1 and Level 2 areas
Correct Answer: BD
In which network environment is IS-IS adjacency check important?
A. in a multitopology environment where there are different instances of IS-IS running on the same router
B. in an IPv4/IPv6 environment and running single-topology IS-IS
C. when a level L1/L2 IS-IS router is neighboring with a Level 1 only or Level 2 only router
D. when IS-IS neighbors are in an NBMA environment like over Frame Relay
E. when IS-IS neighbors are in a broadcast environment like an Ethernet LAN
Correct Answer: B
Refer to the 642-883 pdf OSPF command exhibit.