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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 1 link-state PDU (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 2 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.

s interface detail command and notice that for some interfaces you have a circuit type of 3. Which IS-IS level(s) is enabled on these interfaces？（）

A. Level 1 only

B. Level 2 only

C. Level 1 and Level 2

D. Level 3 only

r C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is:Router A: 10.1.1.1/24Router B: 10.1.1.2/24Router C: 10.2.2.1/26Which statement is true about all the adjacencies that exist on that LAN？（）

A. No routers are adjacent with each other.

B. Only Router A and Router B are adjacent at Level 1.

C. Only Router A and Router B are adjacent at Level 2.

D. All three routers are adjacent with each other at Level 1.

r A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A‘s 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

A. You can reach other Level 2 routers.

B. It can reach at least one other defined area.

C. The router is reachable by at least two ES-IS nodes.

D. It has at least one enabled reachable prefix with a valid metric defined.

A. the router with the lowest priority

B. the router with the highest priority

C. the router with the highest System ID

D. the router with the highest IP address

the initial configuration commands. Which router mode does this describe？

A．ROM Monitor mode

B．SETUP mode

C．Autoflash mode

D．RXBOOT mode

E．None of the above

A.The router is in area 49.0001.0002

B.The router acts as a Level 1 - 2 router

C.CLNS routing is enable d for the router

D.The router has a system ID of 0003.0004

E.The interfaces have a functional IS - IS configuration

F.The network service access point selector (NSEL) byte has a value of 0

A. router isis network 192.168.1.0 0.0.0.255

B. router isis network 192.168.1.0 255.255.255.0

C. interface atm 6/0.33 ip address 192.168.1.1 255.255.255.0 router isis

D. interface atm 6/0.33 ip address 192.168.1.1 255.255.255.0 ip router isis