Routing Protocols Characteristic, EIGRP and ISIS

Question 1

What two circuit types are supported by IS-IS?

Answer 1

Multiaccess (broadcasts) & Point to Point

Question 2

What is multi-access (broadcast) over a network?

Answer 2

Same physical link can be used to communicate with more than one destination.

Question 3

What is Point-to-point over a network?

Answer 3

Where each physical link is dedicated to a single destination

Question 4

What does IS-IS stand for?

Answer 4

Intermediate system to Intermediate system routing protocol

Question 5

What is IS-IS commonly used for?

Answer 5

internal routing in large ISP networks

Question 6

What are the two level of hierarchy that IS-IS creates?

Answer 6

Level 1 and Level 2

Question 7

What is Level 1 in IS-IS network used for?

Answer 7

intra-area routing

Question 8

What is Level 2 in IS-IS network used for?

Answer 8

inter-area routing

Question 9

What is intra-area routing?

Answer 9

“O” routes in the routing table routes in that area

Question 10

What is inter-area routing?

Answer 10

“O IA” routes that are learned in different areas

Question 11

What type of protocol is IS-IS?

Answer 11

OSI Protocol / Link State

Question 12

What does IS-IS use to identify each router?

Answer 12

Network Entity Title (NET) an address assigned to an instance of the IS-IS protocol

Question 13

Do L1/L2 Routers in IS-IS maintain separate link-state databases for L1 routes and for L2 routes? True/False

Answer 13

True

Question 14

What is a L1 in IS-IS similar to?

Answer 14

OSPF internal routers in total stubby area.

LSA 1 Network / LSA 2 Summary and a default route

Question 15

What is a L2 in IS-IS similar to?

Answer 15

OSPF backbone router

Question 16

What is a L1/L2 in IS-IS similar to?

Answer 16

OSPF area border router (ABR)

Question 17

Does IS-IS define a backbone area like OSPF area 0? Yes/No

Answer 17

No

Question 18

What are the three topologies you can have in IS-IS?

Answer 18

Hierarchical, Flat or Hybrid