Click on the exhibit.
AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing.
Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?
- A . Routers R6, R1, R4 and R5.
- B . Routers R1and R4.
- C . Routers R1, R2, R3 and R4.
- D . Routers R2 and R3.
Click the exhibit.
Routers RR1 and RR2 are route reflectors with the same Cluster-ID.
How does router RA treat the updates for prefix 192.168.1.0/27 received from routers RR1 and RR2?
- A . Router RA prefers the update received from router RR1.
- B . Router RA prefers the update received from router RR2.
- C . Router RA flags both updates as invalid.
- D . Router RA accepts both updates and flags them as used.
Which of the following statements about the BGP Advertise External feature is FALSE?
- A . It modifies the BGP advertisement logic.
- B . It improves convergence times and allows for better load sharing.
- C . It allows a router to advertise multiple external paths for a single prefix.
- D . It supports both IPv4 and IPv6.
An Alcatel-Lucent 7750 SR receives a route from an eBGP peer without a MED.
What MED value is sent to iBGP peers?
- A . 100
- B . 250
- C . The IGP cost
- D . None
Which of the following best describes the relationship between locally configured policies and the direction of traffic?
- A . Import policies affect the way the local AS receives traffic, while export policies affect the way it sends traffic.
- B . Import policies affect the way the local AS sends traffic, while export policies affect the way it receives traffic.
- C . Both import and export policies affect the way the local AS receives traffic, but not the way it sends traffic.
- D . Both import and export policies affect the way the local AS sends traffic, but not the way it receives traffic.
Click the exhibit.
Router R1 is advertising prefix 192.168.1.0/27 with community "no-export.
Which routers will receive an update for that prefix?
- A . Router R2 only.
- B . Routers R2 and R3 only.
- C . Routers R2, R3 and R4 only.
- D . Routers R2, R3, R4and R5.
Which of the following statements regarding BGP Add-Paths is FALSE?
- A . Add-Paths allows non-best paths to be advertised to a peer.
- B . Add-Paths capabilities are exchanged between peers after the BGP session is established.
- C . A BGP speaker must advertise the capability to receive multiple paths from its peer.
- D . A BGP speaker must advertise the capability to send multiple paths to its peer.
Click the exhibit.
Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200.
On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?
- A . On router R5 only.
- B . On either router R1or R2.
- C . On both routers R1and R2.
- D . On all routers R1, R2 and R5.
Which of the following is NOT considered an option of export policies?
- A . Advertising customer networks into BGP.
- B . Sending aggregates that summarize the AS s address space.
- C . Sending MEDs to influence ingress traffic from peers.
- D . Preventing unwanted NLRI from entering the AS.
What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?
- A . All BGP routes are accepted.
- B . All routes matching prefix lists "List-1" and "List-2" are rejected.
- C . BGP routes matching prefix lists "List-1" or "List-2" are rejected.
- D . BGP routes matching prefix lists "List-1" and "List-2" are rejected.
Click the exhibit.
Router R6 is a route reflector with clients R1, R2, R4 and R5. R4 receives three routes from router R6 and is configured with ECMP 3.
Given the following BGP configuration on router R4, how many primary and backup paths will be present in router R4’s BGP routing table?
- A . Two primary paths and one backup path.
- B . One primary path and two backup paths.
- C . Three primary path and one backup path,
- D . Three primary paths.
Which of the following is TRUE if the state of one BGP neighbor shows Active?
- A . The neighbor will send a Keepalive message.
- B . The router is trying to initiate a TCP connection to that neighbor.
- C . The router received an Open message with the correct parameters.
- D . The router is actively exchanging updates with that neighbor.
Which of the following is TRUE if a BGP session state is Connect?
- A . BGP is waiting for the TCP connection to be completed.
- B . BGP has established a TCP connection, and an Open message has been sent to that neighbor.
- C . The BGP session has been interrupted, and a TCP connection is being re-established.
- D . BGP has failed to establish a TCP connection to that neighbor, and ConnectRetry has been reset to zero.
A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 advertised into BGP using the following export policy. The "aggregate 192.168.0.0/16" command is executed.
What is the effect of this configuration?
- A . A single route for 192.168.0.0/16 is advertised.
- B . BGP routes 192.168.1.0/27, 192.168.2.0/27, and 192.168.0.0/16 are advertised.
- C . BGP routes 192.168.1.0/27 and 192.168.2.0/27 are advertised, and 192.168.0.0/16 appears as a "Blackhole" route in the route table only.
- D . The given export policy is invalid.
An Alcatel-Lucent 7750 SR has the BGP configuration shown below.
Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?
- A . Both neighbors R1and R2 should be part of AS 65540.
- B . Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.
- C . Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.
- D . Both neighbors R1and R2 should be part of AS 65560.
What kind of BGP attribute is the Local Preference?
- A . Optional transitive attribute.
- B . Optional non-transitive attribute.
- C . Well-known mandatory attribute.
- D . Well-known discretionary attribute.
What are the well-known mandatory BGP attributes?
- A . Origin, Next Hop and Local Preference.
- B . Local preference, AS Path and Next Hop.
- C . Aggregator, Next Hop and AS Path.
- D . AS Path, Next Hop and Origin.
Click the exhibit.
Which of the following statements best describes the BGP sessions within the given network?
- A . The session between AS 65202 and AS 65206 is an iBGP session.
- B . The session between AS 65204 and AS 65206 is an intra-confederation eBGP session.
- C . A BGP session is required between AS 65202 and AS 65204.
- D . The BGP sessions within the member ASs are known as inter-confederation BGP sessions.
A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100.
Which route will appear in the RIB-out?
- A . Only the first route will appear in the RIB-Out.
- B . Only the second route will appear in the RIB-Out.
- C . Only the third route will appear in the RIB-Out.
- D . All routes will appear in the RIB-Out.
Click the exhibit.
Assuming router A is configured with "next-hop-self", what does the BGP update for prefix 192.168.0.1/27 contain when it arrives at router B?
- A . AS Path of 65200 65100, Next Hop of router A.
- B . AS Path of 65200 65100, Next Hop of router E.
- C . AS Path of 65100, Next Hop of router A.
- D . AS Path of 65100, Next Hop of router E.
Click the exhibit.
If router A originates a BGP route for prefix 192.168.0.1/27, what will the update contain when it reaches router B?
- A . AS Path of 65200, Next Hop of router A, Origin of IGP.
- B . AS Path of 65200, Next Hop of router A, Origin of incomplete.
- C . Null AS Path, Next Hop of router A, Origin of IGP.
- D . Null AS Path, Next Hop of router A, Origin of incomplete.
Which of the following behaviors regarding the modification of BGP attributes within a confederation is TRUE?
- A . Next Hop is modified when crossing member AS boundaries within a confederation.
- B . Origin Code is modified when crossing member AS boundaries within a confederation.
- C . AS Path is modified when crossing member AS boundaries within a confederation.
- D . None of the well known mandatory attributes is modified within a confederation.
An Alcatel-Lucent 7750 SR receives two updates for the same route with local preferences 200 and 300, respectively.
What local preference is sent to eBGP peers?
- A . 100
- B . 200
- C . 300
- D . None
Which of the following statements regarding BGP control plane convergence is FALSE?
- A . Core and edge node failure recovery depends on IGP convergence.
- B . Edge neighbor failure is detected by the eBGP session timeout.
- C . BGP control plane convergence is independent of number of affected prefixes.
- D . Upon BGP control plane convergence, an optimal path is installed in the FIB.
Click the exhibit.
Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes on router R1?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
BGP is configured on two peers, routers A and
B. Router A is configured with a Hold Time timer of 60 seconds and a Keepalive timer of 25 seconds. Router B is configured with a Hold Time timer of 90 seconds and a Keepalive timer of 70 seconds.
What will the active Keepalive timer be on router B?
- A . 70 seconds
- B . 25 seconds
- C . 20 seconds
- D . 30 seconds
Which of the following AS Paths will match the regular expression "65100."?
- A . "65100"
- B . "65100 65200”
- C . "65200 65100"
- D . "65100 65250 65200"
Click the exhibit.
Routers RR1 and RR2are route reflectors with clients R1x and R2x, respectively. Routers RR1 and RR2 are non-clients of each other, and router R1 is a non-client of both.
Which of the following regarding BGP sessions in AS 65540 is TRUE?
- A . Router R1must have at least one BGP session to each of routers R1x and R2x.
- B . Routers R1, RR1 and RR2 must be fully meshed.
- C . Routers R1x and R2x must have at least one BGP session between them.
- D . Routers R1x as well as routers R2x must be fully meshed.
Click the exhibit.
AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "summary-only" enabled.
Which of the following routes are received by router R7?
- A . Client1, Client2 and the aggregate.
- B . Only the aggregate.
- C . Only Client1 and the aggregate.
- D . Only Client2 and the aggregate.
Click the exhibit.
AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled.
Which of the following is TRUE regarding the aggregate route received by router R7?
- A . The AS Path is set to 65540, and the Atomic Aggregate flag is set.
- B . The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.
- C . The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.
- D . The AS Path is set to 65550, and the Atomic Aggregate flag is not set.
Click the exhibit.
Routers RR1 and RR2 are route reflectors with the same Cluster-ID.
When the update for prefix 192.168.1.0/27 is received at router RA2, what are the Originator_ID and Cluster_List attributes?
- A . Originator_ID of RR1; and Cluster_List of 10.16.10.1.
- B . Originator_ID of RX; and Cluster_List of 10.16.10.1.
- C . Originator_ID of RR1; and the Cluster_List is not set.
- D . Neither the Originator_ID nor the Cluster_List is set.
Which of the following is TRUE?
- A . There can only be one community associated with a route.
- B . Community is an optional non-transitive attribute.
- C . Community is an optional transitive attribute.
- D . Community is a well-known discretionary attribute.
What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?
- A . All BGP routes are rejected.
- B . All BGP routes are accepted.
- C . All routes matching prefix list "List-1" are rejected.
- D . All BGP routes matching prefix list "List-1" are rejected.
Click the exhibit.
Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh.
What path does traffic destined to 192.168.1.0/27 take from router R1?
- A . R1-R3-R8
- B . R1-R2-R4-R8
- C . R1-R3-R4-R8
- D . R1-R2-R4-R3-R8
Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made and committed, what action is required by the user for the change to take effect?
- A . Execute a command to re-evaluate all routes in the Local-RIB against the configured export policies.
- B . Execute a command to re-evaluate all routes in the RIB-In against the configured import policies.
- C . Execute a command to reset the BGP session with the affected peer or peers.
- D . No further action is required.
Which of the following is NOT a goal of BGP routing policies?
- A . To protect external networks from instability.
- B . To communicate the architecture of an AS to external ASs.
- C . To protect the local AS and other external ASs from bad NLRI.
- D . To optimize ingress and egress traffic patterns to best serve the users of the AS.
Which of the following regarding the atomic aggregate attribute is TRUE?
- A . It is an optional transitive attribute.
- B . It is an optional non-transitive attribute.
- C . The atomic aggregate flag is always set if the aggregator attribute is set.
- D . The atomic aggregate flag is always set if the AS Path information is lost due to aggregation.
What will happen if an update is received with an unrecognized optional non-transitive attribute?
- A . The router will accept the update and send a notification.
- B . The router will not accept the update and send a notification.
- C . The router will accept the update and ignore the attribute.
- D . The router will accept the update and propagate the attribute.
Which of the following about a single-homed AS is FALSE?
- A . A single-homed AS is also known as a stub AS.
- B . A single-homed AS is also known as a leaf AS.
- C . A single-homed AS uses either the ISP AS number or a private AS number.
- D . A single-homed AS can be either transit or non-transit
Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550.
What is the AS Path of the aggregate route received by router R2?
- A . 65540
- B . 65540 1
- C . 65540 65540
- D . 65550 65540
Which of the following statements regarding Internet Exchange Points is FALSE?
- A . They provide both peering and transit services.
- B . They provide services only to Tier 1 service providers.
- C . They can be either public or private.
- D . They provide services at the local, regional and continental levels.
A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each.
Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?
- A . 12
- B . 13
- C . 14
- D . 15
Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router R2 has system address 10.10.10.2.
Which of the following configurations on router R2 can establish a BGP session with router R1?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit.
An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths.
What AS Path is seen by AS 200?
- A . 140000 137000
- B . 137000 140000
- C . 23456 23456
- D . 200 140000 137000
Which of the following regarding BGP confederations is FALSE?
- A . The entire confederation is viewed as a single AS by an eBGP peer.
- B . Within a confederation, each member AS is considered as a stand-alone AS.
- C . Member ASs within a confederation can use route reflection.
- D . Member ASs must be fully meshed within a confederation.
What class of attribute is Originator_ID?
- A . Well-known mandatory.
- B . Well-known discretionary.
- C . Optional transitive.
- D . Optional non-transitive.
Click the exhibit.
Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?
- A . Router C sends the update to routers E and F only.
- B . Router C sends the update to routers D, E and F.
- C . Router C sends the update to routers A, B, E and F.
- D . Router C sends the update to routers A, B, D, E and F.
Click the exhibit.
Which of the following about the relationship between ISP 1 and ISP 3 is TRUE?
- A . ISP 1 is downstream from ISP 3 and is expected to push more traffic toward ISP 3 than it pulls from it.
- B . ISP 3 is downstream from ISP 1 and is expected to push more traffic toward ISP 1 than it pulls from it.
- C . ISP 1 is downstream from ISP 3 and is expected to pull more traffic from ISP 3 than it pushes toward it.
- D . ISP 3 is downstream from ISP1 and is expected to pull more traffic from ISP 1 than it pushes toward it.
Which of the following is FALSE regarding the 16-bit public autonomous system numbers?
- A . They are allocated to the RIRs by ICANN/IANA.
- B . They are used when connecting ASs on the Internet.
- C . They range from 1 to 56319.
- D . They are assigned by the ISPs for enterprise networks.
Which of the following is NOT considered an option of import policies?
- A . Preventing unwanted NLRI from entering the AS.
- B . Filtering NLRI based on AS Path or prefix-lists,
- C . Modifying the local preference of route advertisements.
- D . Setting MED values of route advertisements.
Which of the following statements regarding BGP route selection is TRUE?
- A . Lower local preference is preferred over higher local preference.
- B . Higher MED is preferred over lower MED.
- C . Higher origin code is preferred over lower origin code.
- D . Lower BGP router ID is preferred over higher BGP router ID.
An Alcatel-Lucent 7750 SR is configured with a policy to export directly-connected networks to BGP.
Which of the following commands verifies that the export was successful?
- A . show router route-table
- B . show router bgp routes
- C . show router bgp routes <prefix> hunt
- D . show router bgp neighbor <ip-address> received-routes
Click the exhibit.
Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on router R2?
- A . 10.0.2.1
- B . 10.0.2.2
- C . 10.16.10.1
- D . 10.16.10.3
Click the exhibit.
An update travels from AS 135000 to AS 137000, traversing both 32-bit and 16-bit AS paths.
What will the AS Path be when the update reaches AS 137000?
- A . 140000 200 135000
- B . 137000 140000 200 135000
- C . 140000 23456 135000
- D . 135000 200 140000
Which regular expression will match the AS Path of a route originating in remote AS 65100?
- A . ".+ 65100"
- B . "65100.+"
- C . ".* 65100.*"
- D . "65100"
Click the exhibit.
AS 65100 is advertising 192.168.1.0/27 into BGP.
Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R7?
- A . 65206 65202 65100
- B . (65206 65202)65100
- C . (65204 65206 65202) 65100
- D . (65200) 65100
Click the exhibit.
Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes" on router R2?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit.
Which of the following is a valid BGP configuration for router R2?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit.
Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?
- A . AS Path of 65200 65100, Next Hop of router A.
- B . AS Path of 65200 65100, Next Hop of router E.
- C . AS Path of 65100, Next Hop of router E.
- D . AS Path of 65100, Next Hop of router A.
Click the exhibit.
Assume all router-IDs are properly configured.
Which of the following configurations is required on the Alcatel-Lucent 7750 SR router A to establish an IPv6 BGP session to router D?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Which of the following best describes the purpose of advertise-external?
- A . It enables a BGP speaker to advertise multiple external routes to iBGP peers.
- B . It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.
- C . It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.
- D . It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.
Click the exhibit.
After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?
- A . All routers with which it has a BGP session.
- B . All routers with which it has a BGP session, except the router it received the update from, which is router B.
- C . All routers with which it has a BGP session, except the router it received the update from, which is router C.
- D . All routers with which it has a BGP session, except the router it received the update from, which is router D.
- E . Only eBGP neighbors.
Click the exhibit.
Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit.
Over which BGP session will router B learn the 10.1.1.0/24 prefix?
- A . The session between router A and router B.
- B . The session between router C and router B.
- C . The session between router D and router B.
- D . Router B will learn the prefix over all of the sessions, then it will choose the best route.
Click the exhibit.
Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions.
Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router B?
- A . The IPv6 link-local address of the router D interface towards router A.
- B . The IPv6 link-local address of the router A interface towards router D.
- C . The IPv6 global address of router A.
- D . The IPv6 global address of router D.
A BGP session is in OpenConfirm state.
Which of the following messages must be received to transition to Established state?
- A . Update
- B . Open
- C . Notification
- D . Keepalive
Which of the following routes is NOT considered an internal route?
- A . A route received from a BGP peer within the same AS.
- B . A route originated by a router in a different cluster of the same AS.
- C . A route received from a BGP peer from a different member AS of a confederation.
- D . A route received from a BGP peer from the same member AS of a confederation.
What happens to a route that is rejected by an import policy on an Alcatel-Lucent 7750 SR?
- A . The route is discarded.
- B . The route is kept in the RIB-In, but marked as an invalid route.
- C . The route is moved to the LOC-RIB, but not marked as a used route.
- D . The route is moved to the route table, but not to the FIB.
The configuration of an Alcatel-Lucent 7750 SR is given below.
Router R1 has established BGP sessions with routers R2 and R3.
Which of the following is TRUE?
- A . Router R1 forms an iBGP session with router R2, and an eBGP session with router R3.
- B . Router R1 forms iBGP sessions with routers R2 and R3.
- C . Router R1 forms eBGP sessions with routers R2 and R3.
- D . The types of BGP sessions with routers R2 and R3 cannot be determined.
Which of the following regarding "well-known discretionary” BGP attributes is TRUE?
- A . They must be recognized by all peers and included in all BGP updates.
- B . They are discarded if not recognized by the recipient.
- C . They must be recognized by all peers and optionally included in BGP updates.
- D . The receiving router sends a notification if a well-known discretionary attribute is not present in an update.
Which of the following statements regarding BGP FRR is FALSE?
- A . The router must receive several BGP routes to compute a backup path.
- B . BGP FRR can be triggered by BFD.
- C . The backup path can use the same next hop as the primary path.
- D . BGP peer-tracking can be used to improve BGP FRR failure detection times.
Click the exhibit.
Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4.
Which of the following is a valid configuration on router RR1?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Which of the following regarding route reflectors is TRUE?
- A . Only the route reflector is configured with a cluster id.
- B . There can only be one route reflector in a cluster.
- C . Clients should have iBGP sessions with each other to maintain the mesh.
- D . There can only be one level of route reflectors in the topology.
Click the exhibit.
Assume all router-IDs are properly configured, and link-local IPv6 addresses are used to establish the eBGP sessions.
Which of the following is the MINIMAL configuration required on router A so that router B can exchange traffic with router D?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Which of the following parameters does NOT have to match for an iBGP session to be successfully established?
- A . BGP version number.
- B . The local AS number.
- C . The Hold Time.
- D . Authentication.
Click the exhibit.
AS 65100 is advertising 192.168.1.0/27 into BGP.
Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?
- A . 65200 (65206 65202) 65100
- B . (65206 65202)65100
- C . 65250 (65206 65202) 65100
- D . 65200 65100
Click the exhibit.
Router R1 is a route reflector with clients R2, R5 and R6. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.
Assuming that routers R1, R2 and R4 are configured with "add-paths ipv4 send 2 receive", what is the expected output of "show router bgp routes" when executed on router R2?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP policy?
- A . "client2" routes will be tagged with communities "West" and "North".
- B . "client2" routes will be tagged with communities "West", "North" and "South".
- C . "client2" routes will be tagged with community "West".
- D . "client2" routes will be tagged with community "South".
Two Alcatel-Lucent 7750 SRs are established BGP peers with the following add-paths configuration:
R1: configure router bgp add-paths ipv4 send 4 receive
R2: configure router bgp add-paths ipv4 send 2
If router R1 advertises three routes for a given prefix X, how many routes is router R2 expected to have for prefix X?
- A . None
- B . 2
- C . 3
- D . 4
Which of the following is TRUE if the local state of BGP is OpenConfirm?
- A . The local system has received a Keepalive message and is ready to exchange updates.
- B . The local system is exchanging Update messages with its neighbor.
- C . The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.
- D . The local system has sent an Open message to its neighbor and is waiting to receive one back.
Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?
- A . "client1" routes will be tagged with communities "North" and "West".
- B . "client1" routes will be tagged with community "West".
- C . "client1" routes will be tagged with community "North".
- D . "client1" routes will be rejected.
An Alcatel-Lucent 7750 SR is configured with a local preference of 250.
If it receives a BGP update with a local preference of 500, what local preference is sent to its eBGP peers?
- A . 100
- B . 250
- C . 500
- D . None
Which of the following is NOT a BGP message type?
- A . Route-Refresh
- B . OpenSent
- C . Notification
- D . Update
- E . Keepalive
Click the exhibit.
Which of the following is a valid confederation configuration for Router R2?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit.
When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C.
What action is taken by router B when it receives the update?
- A . Router B propagates the BGP update to routers D and C.
- B . Router B propagates the BGP update to router D.
- C . Router B detects duplicates in its BGP database and discards the update.
- D . Router B propagates the update to routers A, C and D.
Which of the following regarding the TTL of a BGP message is TRUE?
- A . TTL is a well-known mandatory BGP attribute.
- B . The default TTL value of an eBGP message is 1, and 64 for an iBGP message.
- C . The default TTL value of an iBGP message can be modified using the multihop command.
- D . The default TTL value of an eBGP message can be modified using the "ttl-security" command.
Why is a full mesh of iBGP peers required?
- A . To ensure proper route propagation inside a transit AS.
- B . To ensure that all routers are directly connected.
- C . To ensure that all routers run iBGP inside a transit AS.
- D . To maximize control plane scalability.
An Alcatel-Lucent 7750 SR receives a route from an iBGP peer with a MED value of 500.
What MED value is sent to eBGP peers?
- A . 100
- B . The IGP cost
- C . 500
- D . None
What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?
- A . Policy changes are delayed until the peer router with the affected routes reboots.
- B . Policy changes are delayed until route updates for affected BGP routes are received from peers.
- C . Policy changes are delayed until BGP sessions are cleared or BGP is reset.
- D . Policy changes are delayed until the router reboots.
The following policies are configured and exported using "export "Policy-1" "Policy-2"".
Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?
- A . Client-1 routes only.
- B . Client-2 routes only.
- C . Client-1 and Client-2 routes.
- D . Neither Client-1 nor Client-2 routes.
Click the exhibit.
Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540".
Which of the following regarding updates originating in AS 65540 is TRUE?
- A . Router R3 rejects all updates originating in AS 65540.
- B . Router R3 accepts updates received from router R1 and rejects updates transited through router R2.
- C . Router R3 accepts updates transited through router R2 and rejects updates received from router R1.
- D . Router R3 accepts updates from both routers R1 and R2.
Which of the following statements regarding route reflectors is TRUE?
- A . Route reflectors propagate BGP learned routes to their clients.
- B . Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the AS.
- C . Route reflectors disable iBGP split horizon for all iBGP peers in the AS.
- D . Route reflectors do not work in conjunction with confederations.
Click the exhibit.
Given the following configuration of router R1, what can be said about the function of each of AS 65540s routers?
- A . Routers R1 and R2 are redundant route reflectors with clients R3 and R4.
- B . Routers R3 and R4 are route reflectors with clients R1 and R2.
- C . Router R1 is a route reflector with clients R2, R3 and R4.
- D . Router R1 is a route reflector with clients R3 and R4.
The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately.
What is the best command to force re-evaluation of the import policy with minimal impact?
- A . Configure router bgp shutdown
- B . Clear router bgp neighbor <ip-address> soft
- C . Clear router bgp neighbor <ip-address> soft-inbound
- D . Clear router bgp protocol
Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?
- A . "client2" routes will be only tagged with communities ‘East” and "South".
- B . "client2" routes will be tagged with community "East".
- C . "client2" routes will only be tagged with community "South".
- D . "client2" routes will be rejected.
Click the exhibit.
Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?
- A . The update is sent to router R2 in ISP 1.
- B . The update is sent to routers R2 and R3 in ISP 1.
- C . The update is sent to all routers in ISP 1.
- D . The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.
Click the exhibit.
Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?
- A . ISP 1 has a peering relationship with ISP 2 and ISP 4.
- B . ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.
- C . ISP 1 has a peering relationship with ISP 2 and ISP 3.
- D . ISP 1 has a transit relationship with ISP 2 and ISP 4.
- E . ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.
Which of the following prefix-lists is the most specific match for prefixes 192.168.64.1/20 and 192.168.32.5/19?
- A . Prefix 192.168.0.0/17 longer.
- B . Prefix 192.168.0.0/19 longer.
- C . Prefix 192.168.96.0/19 longer.
- D . Prefix 192.168.0.0/18 longer.
Which of the following regarding BGP Path Identifier is FALSE?
- A . Path-ID is a four-octet identifier pre-pended to the NLRI field of a BGP update.
- B . Path-ID is an optional transitive attribute used to advertise multiple paths.
- C . Path-ID uniquely identifies each path advertised to a neighbor.
- D . A BGP speaker that re-advertises a route must generate its own Path-ID.
Click the exhibit.
Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4.
Which of the following is a valid configuration on router R3?
- A . Option A
- B . Option B
- C . Option C
- D . Option D