Routing and Switching MCQs with Answers
Practice important Routing and Switching MCQs with answers and explanations.
Chapter: 104
Q1201:
What is the main purpose of a Type 5 LSA?
A. To propagate routes inside the OSPF area
B. To describe external routes outside the OSPF AS
C. To flood LSAs in a single area
D. To perform SPF calculation
Correct Answer:
B
Chapter: 104
Q1202:
Which OSPF router type generates Type 5 LSAs?
A. ABR
B. DR
C. ASBR
D. Internal router
Correct Answer:
C
Chapter: 104
Q1203:
What is the purpose of a Type 4 LSA in OSPF?
A. Identifies DR
B. Identifies ABR
C. Identifies ASBR
D. Describes internal routes
Correct Answer:
C
Chapter: 104
Q1204:
Type 4 LSAs are generated when ________ exists within an area.
A. An ABR
B. An ASBR
C. A DR
D. A Type 1 LSA
Correct Answer:
B
Chapter: 104
Q1205:
What is the recommended maximum number of routers per OSPF area?
A. 50
B. 60
C. 40
D. 70
Correct Answer:
A
Chapter: 104
Q1206:
OSPF LSA Type 1 is also known as _________.
A. Network link entries
B. Router link entries
C. Summary link entries
D. External link entries
Correct Answer:
B
Chapter: 104
Q1207:
What bit in a Type 1 LSA indicates a router is an ASBR?
A. External bit
B. Internal bit
C. Router bit
D. Area bit
Correct Answer:
A
Chapter: 104
Q1208:
What is the maximum number of neighbors a router should have in OSPF?
A. 30
B. 40
C. 60
D. 50
Correct Answer:
C
Chapter: 104
Q1209:
What happens when a Type 1 LSA is received by an ABR?
A. It builds a Type 2 LSA
B. It builds a Type 3 LSA
C. It builds a Type 4 LSA
D. It builds a Type 5 LSA
Correct Answer:
C
Chapter: 104
Q1210:
OSPF Type 5 LSAs are flooded to _________.
A. The entire OSPF area
B. The entire autonomous system
C. The entire external network
D. The entire internal network
Correct Answer:
B
Chapter: 104
Q1211:
Which LSA type is used to advertise a network outside the OSPF autonomous system?
A. Type 4
B. Type 3
C. Type 1
D. Type 5
Correct Answer:
D
Chapter: 104
Q1212:
OSPF Type 3 LSAs are generated by which router type?
A. ASBR
B. ABR
C. DR
D. Internal router
Correct Answer:
B
Chapter: 104
Q1213:
What is the default maximum number of areas a router should connect to?
A. 1
B. 2
C. 3
D. 4
Correct Answer:
C
Chapter: 104
Q1214:
A Type 2 LSA is generated for _________ in OSPF.
A. Multiaccess networks
B. Backbone routers
C. External networks
D. ABR connections
Correct Answer:
A
Chapter: 104
Q1215:
How does a router recognize a Type 1 LSA as an ASBR?
A. By the router ID
B. By the external bit
C. By the link ID
D. By the link-state ID
Correct Answer:
B
Chapter: 105
Q1216:
Which OSPF route is noted with a routing designator of 'O' in the routing table?
A. External route
B. Intra-area route
C. Interarea route
D. Stub area route
Correct Answer:
B
Chapter: 105
Q1217:
What does IA represent in an OSPF routing table?
A. Intra-area route
B. Interarea route
C. External route
D. Stub area route
Correct Answer:
B
Chapter: 105
Q1218:
What does 'E1' or 'E2' designate in an OSPF routing table?
A. Internal route
B. Interarea route
C. External route
D. Backbone route
Correct Answer:
C
Chapter: 105
Q1219:
Which LSAs describe the details within an OSPF area?
A. Type 3 and Type 4
B. Type 1 and Type 2
C. Type 5 and Type 6
D. Type 7 and Type 8
Correct Answer:
B
Chapter: 105
Q1220:
What does the SPF algorithm build to determine the best paths in OSPF?
A. LSDB
B. Routing table
C. SPF tree
D. Adjacency table
Correct Answer:
C