The Candid Test On CCIE-r&s-bgp Quiz
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CCIE routing and switching is a certification that every expert engineer needs to undertake in order to plan, operate and troubleshoot converged network infrastructure. Take up the candid test on CCIE- r&s- bgp quiz below and get ready for the upcoming test next week. All the best and keep revising!
- 1.By default, what BGP uses to choose the best route?
- A.
Lowest Weight
- B.
Lowest Local Preference
- C.
Shortest AS Path
- D.
Highest Origin
- E.
Highest Multi-Exit Discriminator
- F.
Lowest Metric
- 2.
- A.
NEXT_HOP is reachable (the router has a route in its routing table.
- B.
The route is synchronized by IGP
- C.
The NLRI is an ATOMIC AGGREGATOR
- D.
The router has an interface connected to the ORIGIN Path Attribute
- E.
The AS_PATH contains the NEXT_HOP
- 3.An NLRI is simply an IP prefix and a prefix length?
- A.
True
- B.
False
- 4.How BGP communicates with its neighbors?
- A.
Using multicast address 224.0.0.2 (all routers)
- B.
Using unicast neighbor address to TCP port 179
- C.
Using unicast neighbor address to UDP port 520
- D.
Using reliable layer 3 protocol (IP/112)
- E.
Using multicast address 224.0.0.2 to UDP port 1985
- F.
Using multicast address 224.0.0.2 to UDP port 3222
- 5.By default, after how many times a neighbor is considered to have failed (ie.: What is the keepalive timer default value)?
- A.
5 seconds
- B.
15 seconds
- C.
30 seconds
- D.
60 seconds
- E.
120 seconds
- F.
180 seconds
- G.
240 seconds
- H.
300 seconds
- 6.By default, keepalive are sent at which interval?
- A.
5 seconds
- B.
15 seconds
- C.
30 seconds
- D.
60 seconds
- E.
120 seconds
- F.
180 seconds
- G.
240 seconds
- H.
300 seconds
- 7.What makes a neighbor internal BGP (iBGP)?
- A.
When the neighbor is in the same confederation
- B.
R1(config)# router bgp 3 internal
- C.
The command: neighbor 1.1.1.1 peer-internal
- D.
When the neighbor is in the same AS
- 8.What the command "neighbor update-source" do?
- A.
Modify the NEXT_HOP attribute advertised to a neighbor
- B.
Strip Private AS from the AS_PATH attribute advertised to a neighbor
- C.
Determine the NLRI used to reach a neighbor
- D.
Determine the source IP address used to reach a neighbor
- 9.How is the destination IP address used to discover and reach a neighbor determined?
- A.
By the NEXT_HOP attribute advertised by a neighbor
- B.
Manually configured using the neighbor command
- C.
Send in the HELLO messages by neighbor
- D.
Define within the peer-group of the confederation
- 10.With Cisco IOS 12.3 and later, BGP perform Auto-Summary by default?
- A.
True
- B.
False
- 11.What authentication method is supported by BGP?
- A.
Plain Text
- B.
MD5
- C.
None. BGP does not support authentication
- D.
RADIUS
- E.
EAP
- 12.
![Which config should be used in order to take advantage of the redundant links between R3 and R4 (assuming the matching config is done on the other side)?]( "Which config should be used in order to take advantage of the redundant links between R3 and R4 (assuming the matching config is done on the other side)?")
- A.
Configure two static route to the other loopback address (on for 10.1.34.0/24 and 10.1.134.0/24). Configure neighbor 3.3.3.3 update-source looback0 and neighbor 3.3.3.3 ebgp-multihop 2(on R4).
- B.
EBGP neighbor command should use aggregator option
- C.
Nothing, eBGP will load balance automatically
- D.
EBGP neighbor command should use peer-group option
- 13.
![What config should be used if R3 and R4 are using their loopback as source IP?]( "What config should be used if R3 and R4 are using their loopback as source IP?")
What config should be used if R3 and R4 are using their loopback as source IP?- A.
EBGP neighbor command should use update-source with loopback IP address
- B.
EBGP neighbor command should use ebgp-peer option
- C.
Nothing, eBGP will advertise connected loopback automatically
- D.
EBGP neighbor command should use ebgp-multihop option
- 14.Select all the properties that define a neighbor in the state "Active"
- A.
Listen on port TCP 179
- B.
The router initiate TCP connection with that neighbor
- C.
The router formed TCP connection with that neighbor
- D.
The router sent OPEN message to that neighbor
- E.
The router received OPEN message from that neighbor
- F.
The router has Established a BGP connection with that neighbor
- G.
None of the above
- 15.
- A.
Listen on port TCP 179
- B.
The router initiate TCP connection with that neighbor
- C.
The router formed TCP connection with that neighbor
- D.
The router sent OPEN message to that neighbor
- E.
The router received OPEN message from that neighbor
- F.
The router has Established a BGP connection with that neighbor
- G.
None of the above
- 16.
- A.
Listen on port TCP 179
- B.
The router initiate TCP connection with that neighbor
- C.
The router formed TCP connection with that neighbor
- D.
The router sent OPEN message to that neighbor
- E.
The router received OPEN message from that neighbor
- F.
The router has Established a BGP connection with that neighbor
- G.
None of the above
- 17.What happen when the keepalive timer within the OPEN message of each BGP neighbor mismatch?
- A.
They stay in "Open Sent" state
- B.
They use the lower keepalive timer value
- C.
They use the higher keepalive timer value
- D.
They stay in "Connect" state
- 18.What BGP message type are used to establish a neighbor relationship and exchange basic parameters?
- A.
Hello
- B.
Advertisement
- C.
Update
- D.
Notification
- E.
Reset
- F.
Open
- G.
KeepAlive
- 19.What BGP message type are used to maintain a neighbor relationship?
- A.
Hello
- B.
Advertisement
- C.
Update
- D.
Notification
- E.
Reset
- F.
Open
- G.
KeepAlive
- 20.What BGP message type are used to exchange NLRI?
- A.
Hello
- B.
Advertisement
- C.
Update
- D.
Notification
- E.
Reset
- F.
Open
- G.
KeepAlive
- 21.What BGP message type are used when BGP errors occur; causing a reset to the neighbor relationship when sent?
- A.
Hello
- B.
Advertisement
- C.
Update
- D.
Notification
- E.
Reset
- F.
Open
- G.
KeepAlive
- 22.What command(s) allow to reset BGP neighbor connections?
- A.
R1 (router-config)# reset neighbor 172.16.8.8
- B.
R1# reset bgp all
- C.
R1# clear ip bgp *
- D.
R1 (router-config)# neighbor 172.16.8.8 shutdown
- E.
R1 (router-config)# clear connections
- F.
R1 (router-config)# reset connections
- G.
R1 (router-config)# clear neighbor *
- H.
R1 (router-config)# reset neighbor *
- 23.Which command enables logging of BGP neighbor status changes (up or down) and resets for troubleshooting network connectivity problems and measuring network stability?
- A.
Debug bgp neighbor
- B.
Neighbor 10.1.1.1 log
- C.
Bgp log-neighbor-changes
- D.
Ip bgp logging
- 24.What is the BGP Routing Information Base (RIB)?
- A.
BGP routing policies for all the Network Layer Reachability Information (NLRI) learn by BGP
- B.
BGP topology table, that holds the Network Layer Reachability Information (NLRI) learn by BGP
- C.
BGP neighbors table
- D.
BGP forwarding logic base on Path Attributes learned
- 25.Which command allows a Soft Reconfiguration of BGP? That is, allows a BGP peer to reapply its routing policies without closing its neighbor connections?
- A.
R1 (router-config)# neighbor 172.16.8.8 soft-reset
- B.
R1# reset bgp soft
- C.
R1# clear ip bgp * soft
- D.
R1 (router-config)# neighbor 172.16.8.8 shutdown soft
- E.
R1 (router-config)# clear connections
- F.
R1 (router-config)# reset connections
- G.
R1 (router-config)# clear neighbor * soft
- H.
R1 (router-config)# reset neighbor *
- 26.Assuming that the no auto-summary command has been configured. What the BGP network 10.1.1.0 mask 255.255.255.0 command instruct to the BGP process to do?
- A.
Activate BGP process on the corresponding interface (on subnet 10.1.1.0/24)
- B.
If 10.1.1.0/24 exactly match an entry in the current IP routing table, then put the equivalent NLRI in the local BGP topology table.
- C.
BGP will start advertising udpate message to its neighbors for any networks 10.0.0.0 in the current local IP routing table.
- D.
Send Open messages on network 10.1.1.0/24 to establish a connection with a neighbor
- 27.
- A.
Activate BGP process on the corresponding interface (on subnet 10.1.1.0/24)
- B.
If 10.1.1.0/24 exactly match an entry in the current IP routing table, then put the equivalent NLRI in the local BGP topology table.
- C.
BGP will start advertising udpate message to its neighbors for network 10.0.0.0/8 if an entry is found in the current local IP routing table.
- D.
Send Open messages on network 10.1.1.0/24 to establish a connection with a neighbor
- E.
If 10.0.0.0 match an entry in the current IP routing table, then put the equivalent NLRI in the local BGP topology table.
- 28.
- A.
Activate BGP process on the corresponding interface (on subnet 10.1.1.0/24)
- B.
If 10.1.1.0/24 exactly match an entry in the current IP routing table, then put the equivalent NLRI in the local BGP topology table.
- C.
BGP will start advertising udpate message to its neighbors for any networks 10.0.0.0 in the current local IP routing table.
- D.
Send Open messages on network 10.1.1.0/24 to establish a connection with a neighbor
- 29.Which statement best describe the following configuration: RTC# router bgp 256 neighbor 1.1.1.1 remote-as 100 neighbor 128.213.11.2 remote-as 256 bgp default local-preference 150
- A.
RTC sets the local preference to 150 of all updates going out to neighbor 128.213.11.2
- B.
RTC sets the local preference to 150 of all updates going out to neighbor 1.1.1.1
- C.
RTC sets the local preference to 150 of all updates advertized by neighbor 128.213.11.2
- D.
RTC sets the local preference to 150 of all updates advertized by neighbor 1.1.1.1
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