单项选择题
You have a Level 1-only router (Router A) in IS-IS area 49.0001.
How does Router A learn how to reach prefixes in other areas?（）
A. Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
B. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.
C. The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.
D. The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
相关考题
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单项选择题
There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router As DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）
A. Router A remains the DIS and generates a new pseudonode LSP for that LAN
B. Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
C. Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
D. Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A -
单项选择题
What does the LSP Holdtime field in an IS-IS database indicate?（）
A. the LSP age
B. the LSP refresh interval
C. the LSP elapsed lifetime
D. the LSP remaining lifetime -
单项选择题
An Intermediate System experiencing memory problems indicates that it may have incomplete data by setting which bit in its LSP?（）
A. more bit
B. partition bit
C. attached bit
D. overload bit
