Border Gateway Protocol | BGP MCQs
Border Gateway Protocol MCQs contains set of 30 Routing Protocol – BGP MCQ Questions With Answers which will help you to clear beginner level quiz.
Topics covered related to BGP, border gateway protocol, bgp router, bgp routes, bgp protocol, network bgp, bgp network, ebgp peering, peering bgp, bgp peer, bgp session, bgp states, bgp state, bgp sessions and so on.
1. Does BGP send incremental or complete updates on a regular basis after the initial route exchange,
A. BGP sends incremental updates only when needed.
B. BGP sends complete updates to ensure that the routing information is accurate.
C. BGP sends both complete and incremental updates to ensure the accuracy of routing.
D. BGP does not send any updates after the initial data exchange.
Ans – A
2. Why EBGP peers must be directly connected ?
A. An IGP does not operate between AS networks.
B. The Next Hop attribute gets changed when routes are exchanged between the peers.
C. The IP TTL of BGP messages is set to 1.
D. They do not have to be directly connected.
Ans – C
3. What is one use of the AS Path attribute from bellow?
A. To determine if a route is active in the routing table
B. To prevent routing loops
C. To establish a BGP peer session
D. To prevent a denial-of-service attack
Ans – B
4. Which BGP state denotes a fully operational session?
A. OpenSent
B. OpenConfirm
C. Established
D. Active
Ans – C
5. How the advertisement rules differ for IBGP and EBGP peers?
A. EBGP peers advertise only active routes, while IBGP peers advertise all routes.
B. EBGP peers advertise routes learned from both EBGP and IBGP peers, while IBGP peers do not advertise IBGP-learned routes.
C. IBGP and EBGP routers advertise all routes to all peers.
D. IBGP peers advertise routes learned from both IBGP and EBGP peers, while EBGP peers
do not advertise EBGP-learned routes.
Ans – B
6. What is the purpose of the Notification message?
A. To notify a peer that it has completed sending all the routing updates
B. To notify peers that a route’s attributes are changing
C. To open a BGP connection
D. To notify a peer that an error has been detected
Ans – D
7. By default, what BGP attribute is evaluated only when two path advertisements are received from the same neighboring AS?
A. Local Preference
B. Multiple Exit Discriminator
C. Next Hop
D. AS Path
Ans – B
8. What is the purpose of the Keepalive message?
A. To begin the peer relationship
B. To request an Update message
C. To acknowledge a Notificaton message
D. To maintain the BGP peer session
Ans – D
9. After sending a Notification message to a remote peer, What action does the local router take ?
A. Sends a Keepalive message to the peer.
B. Sends an Update message to the peer.
C. Terminates the peer session.
D. No action is taken.
Ans – C
10. Why is a full-mesh peer session required for IBGP peers?
A. Because an IGP is needed to establish the peering sessions.
B. IBGP peers do not send each other IBGP-learned routing updates to prevent routing loops.
C. EBGP peers won’t advertise their routes until a full mesh is established.
D. To preserve the Next Hop attribute.
Ans – A
