Two Nokia 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
Click the exhibit.
The CEs use BGP and export policies to advertise their local prefixes with the VPRN on their PEs.
If the VPRN is functioning properly, which of the following commands will succeed when performed on router R1?
- A . "ping 192.168.20.1"
- B . "oam vprn-ping 100 source 192.168.10.1 destination 192.168.20.1"
- C . "oam vprn-ping 100 source 192.168.20.1 destination 192.168.10.1"
- D . "ping 10.10.10.6" (router R6’s system IP)
On an Nokia 7750 SR, what is the recommended approach for making sure that MTUs between a VPLS and its spoke IES termination match?
- A . Set the service MTU of the VPLS to match the IES MTU.
- B . Set the ip-mtu of the IES to match the service MTU of the VPLS.
- C . Set the SDP MTU of the IES to match the SDP MTU of the VPLS.
- D . Set the MTU of the IES’s network port to match the service MTU of the VPLS.
Click on the exhibit.
Which of the following is FALSE?
- A . The router can reach prefix 192.10.1.2/32 through a RSVP-TE tunnel.
- B . The router can reach prefix 192.10.1.2/32 through an LDP tunnel.
- C . The router 10.10.10.2 is the egress router of the prefix 192.10.1.2/32.
- D . The Isp-ping tool is used to perform a unidirectional LSP test.
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.
A static route is created using the command "static-route 2.3.4.0/24 next-hop 1.2.3.4" .
What is the correct traceroute command to test this static route on an Nokia 7750 SR?
- A . traceroute 2.3.4.1
- B . traceroute 2.3.4.0/24 next-hop 1.2.3.4
- C . traceroute next-hop 1.2.3.4
- D . traceroute does not work on the Nokia 7750 SR
Click the exhibit.
Based on this output from PE router R1, how many other PEs are participating in the VPRN?
- A . 0
- B . 1
- C . 2
- D . 3
An Nokia 7750 SR is configured with an export policy to redistribute its directly-connected networks into BGP .
Which of the following databases contains the routes for these networks?
- A . The routes are in the RIB-In.
- B . The routes are in the Loc-RIB.
- C . The routes are in the RIB-Out.
- D . The routes are not in any of the BGP databases.
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 button.
What is the command to configure a static route on the Nokia 7750 SR router R1 to reach the network behind router R2?
- A . configure router static-route 139.120.121.0/24 next-hop 138.120.199.2
- B . configure router static-route 139.120.121.0/24 next-hop 138.120.199.1
- C . configure router static-route 138.120.199.2/24 next-hop 138.120.199.1
- D . configure router static-route 139.120.121.0/24 next-hop 139.120.121.2
Which of the following about the components of a distributed service on the Nokia 7750 SR is TRUE?
- A . A SAP can only be used by one service on a router.
- B . A dedicated SDP needs to be created for each service.
- C . A service is created on each site before the customer is created.
- D . SAPs must be created before a service is created.
What is the metric and maximum routable value for RIP?
- A . Hop count and 16
- B . Hop count and 15
- C . Link cost and 15
- D . Link cost and 16
An Nokia 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.
From the list below select the statements that describe the behavior of link state information aging. (Choose 2)
- A . The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS
- B . The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS
- C . The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.
- D . The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.
Which of the following statements regarding the election of the designated router (DR) by OSPF routers are true? (Choose two)
- A . The router with the lowest priority is the DR.
- B . The router with the highest priority is the DR.
- C . If priorities are the same, the DR is chosen based on the lowest RID.
- D . If priorities are the same, the DR is chosen based on the highest RID.
Which of the following conditions will prevent an OSPF adjacency from reaching the full state? Choose three answers.
- A . MTU mismatch
- B . Incorrect subnet mask
- C . System interface not included in OSPF
- D . Area ID not the same
- E . Different metric set on each end of the link
- F . Router ID not defined
Click the exhibit.
This PE is connected to an IPv4 core and is being configured to support 6VPE for a VPRN .
Which of the following completes this section of the configuration?
- A . Family ipv4
- B . Family ipv6
- C . Family ipv4 ipv6
- D . Family vpn-ipv4
- E . Family vpn-ipv4 vpn-ipv6
Which of the following about MPLS shortcuts for IGP on an Nokia 7750 SR is FALSE?
- A . An IGP route takes priority over a transport tunnel.
- B . Both LDP and RSVP-TE based tunnels can be used.
- C . MPLS tunnels can be used to resolve the prefixes learned via IGP.
- D . Multiple MPLS tunnels can be installed in the FIB.
Click on the exhibit.
An LSP traverses the path R1-R2-R3. With one-to-one fast reroute enabled, which router becomes a DMP for the detour tunnels?
- A . Router R1
- B . Router R2
- C . Router R3
- D . Router R4
- E . Router R5
Which of the following about VPRN VRF tables is FALSE?
- A . A PE uses the same VRF table for all the VPRN services on it.
- B . A PE uses a VRF to maintain forwarding information.
- C . Information for VRFs can be advertised between PEs by MP-BGP.
- D . A PE uses a VRF to route traffic to CEs.
Click the exhibit.
Router R2 is advertising prefix 192.168.1.0/27 with community "no-advertise" towards AS 65002.
Which routers receive an update for that prefix?
- A . Router R3 only.
- B . Routers R3 and R4 only.
- C . Routers R3, R4 and R5 only.
- D . Router R2 does not advertise an update for the prefix.
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.
Click the exhibit button.
If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 preference of these two routes? Choose two answers.
- A . The OSPF internal preference
- B . The IS-IS Level 1 internal preference
- C . The IS-IS Level 2 internal preference
- D . The OSPF external preference
- E . The IS-IS Level 2 external preference
- F . The IS-IS Level 1 external preference
Which of the following about VPRNs is TRUE?
- A . Customers must use the same routing protocol as the service provider.
- B . Customers belonging to the same VPRN service must use the same subnet.
- C . Service providers only need to perform configurations on the PEs to add additional VPRNs.
- D . For each VPRN, only one customer can be connected at each PE.
Which of the following about LSP path configuration on an Nokia 7750 SR is TRUE?
- A . The path must include at least one hop.
- B . The path may be used for multiple LSPs.
- C . The path may be used multiple times in a single LSP.
- D . The path must define a tunnel destination IP address.
Which of the following are similarities between OSPF and IS-IS? Choose two answers.
- A . Metric is based on hop count.
- B . Slow convergence after link failures.
- C . Support hierarchy through the use of areas.
- D . Support for CIDR.
- E . Link state updates sent using layer 3 multicast.
Click on the exhibit.
The LSP "toR6" is configured with a fully strict path on an Nokia 7750 SR .
Which of the following configurations is required to enable fast reroute for this LSP?
- A . Enable fast-reroute on all routers along the path. R1, R2, R4, and R6.
- B . Enable both link-protection and node-protection on router R1.
- C . Enable fast-reroute with either one-to-one or facility mode on this LSP.
- D . Enable link-protection only on router R4.
Click the exhibit.
The operator at PE1 wants to analyze the traffic between CE4 and PE2.
On an Nokia 7750 SR, which of the following is required as part of the configuration?
- A . Both PE1 and PE2 need a mirror source.
- B . PE2 needs a mirror source with the remote source specified.
- C . PE1 needs a mirror source with the remote source specified.
- D . Both PE1 and PE2 need a mirror destination.
- E . PE2 needs a mirror destination that specifies a SAP.
Which of the following OSPFv3 LSAs have an AS scope?
- A . Link Local LSA
- B . Router LSA
- C . Network LSA
- D . Inter-Area Router LSA
- E . Intra-Area Prefix LSA
- F . None of the above LSAs have an AS scope.
Click the exhibit button.
The OSPF packets shown have been exchanged between two neighbors .
What state is the OSPF adjacency in?
- A . The adjacency state is two way because both routers have received a database description packet.
- B . The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
- C . The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.
- D . The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.
Click the exhibit button.
Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?
- A . Option A
- B . Option B
- C . Option C
- D . Option D
Click the exhibit button.
What can you deduce from the show command on router R6?
- A . The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.5.
- B . The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment; however, this command does not indicate whether 10.10.10.3 or 10.10.10.5 is the DR or BDR.
- C . The router R6 interface is in a multi-access segment. It is the BDR, which is why it is not adjacent to the other routers.
- D . The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.3.
Static routing will be used in a network between a corporate head office, with many connected networks, and a branch office, with one connection to the head office .
Which of the following best describes the likely configuration?
- A . The corporate head office router will have a default route and the branch site will have a more specific static route.
- B . The corporate head office router and the branch office router will both have specific static routes.
- C . The corporate head office router and the branch router will both have default routes.
- D . The corporate head office router will have a more specific static route and the branch office router will have a default route.
Static routing will be used in a network between a corporate head office, with many connected networks, and a branch office, with one connection to the head office .
Which of the following best describes the likely configuration?
- A . The corporate head office router will have a default route and the branch site will have a more specific static route.
- B . The corporate head office router and the branch office router will both have specific static routes.
- C . The corporate head office router and the branch router will both have default routes.
- D . The corporate head office router will have a more specific static route and the branch office router will have a default route.
168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3 .
Which of the following is a possible solution to the problem?
- A . Add the "originate-default-route" option in the NSSA area configuration on router R3
- B . Add the "summaries" option to the NSSA area configuration on router R1
- C . Make a static route on router R1 to 192.168.3.1
- D . Make a default route on router R2
Click the exhibit.
Router R6 is a route reflector with clients R1, R2 and R5. Router R3 advertises the prefix 192.168.1.0/27 to routers R1, R2 and R5 .
How many routes for prefix 192.168.1.0/27 will router R6 receive?
- A . 1
- B . 2
- C . 3
- D . None
Which of the following cannot be used as a matching criterion in route policy statements?
- A . Source IP address
- B . TCP source port
- C . Prefix list
- D . Protocol type
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
Which of the following about SDPs is FALSE?
- A . An SDP is not required for a local service.
- B . A single SDP can carry different types of services.
- C . An SDP can simultaneously support GRE and MPLS encapsulation.
- D . An SDP can use the system IP address to indicate the far-end router.
An Nokia 7750 SR receives a route from an eBGP peer with a MED value of 500 .
What MED value is sent to iBGP peers?
- A . 100
- B . The IGP cost
- C . 500
- D . None
Click the exhibit button.
If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24 .
What will be the preference of these two routes? Assume that all IS-IS routers are L1/L2 capable and are in the same area. Choose two answers.
- A . The OSPF internal preference
- B . The IS-IS Level 1 internal preference
- C . The IS-IS Level 2 internal preference
- D . The OSPF external preference
- E . The IS-IS Level 2 external preference
- F . The IS-IS Level 1 external preference
Which LSA type is used for OSPF-TE?
- A . Type 8 LSA ― Link Local LSA
- B . Type 9 LSA ― Link local Opaque LSA
- C . Type 10 LSA ― Area local Opaque LSA
- D . Type 11 LSA ―AS Opaque LSA
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 statements best describes the function of an OSPF Type 4 LSA?
- A . A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.
- B . A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area.
- C . A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information.
- D . A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information.
Click on the exhibit.
This policy is applied on a router as an LDP export policy and an LDP session has been established between this router and its neighboring router.
In addition to the FECs learned from its neighbors, what additional FECs will appear in this router’s LIB?
- A . All FECs that are in the 192.168.1.0/24 address space.
- B . Local FECs that are in the 192.168.1.0/24 address space.
- C . All FECs that are not in the 192.168.1.0/24 address space.
- D . All FECs except the local FECs that are in the 192.168.1.0/24 address space.
What are the three databases maintained by a Link State Protocol?
- A . Neighbor, adjacency, route table
- B . Neighbor, topology, forwarding
- C . Topology, routing, forwarding
- D . There are only two databases: adjacency and topology
What happens by default on an Nokia 7750 SR when a VPLS accepts a tagged frame at the ingress SAP 1/1/1:100?
- A . The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.
- B . The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.
- C . The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.
- D . The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.
Click on the exhibit.
After the Isp-ping command is executed, which of the following best describe the router’s action?
- A . MPLS Echo Request packets are sent unlabeled to the prefix 192.10.1.2.
- B . MPLS Echo Request packets are sent within the LDP tunnel that are signaled for 192.10.1.2.
- C . MPLS Echo Request packets are sent within the RSVP-TE tunnel that are signaled for 192.10.1.2.
- D . MPLS Echo Request packets are sent over TCP.
What type of OSPF router generates a type 2 LSA?
- A . Area Border Router
- B . Autonomous System Boundary Router
- C . Designated Router
- D . All routers within an OSPF area.
Which of the following about transport and service tunnels is FALSE?
- A . Service tunnels are unidirectional.
- B . Transport tunnels are unidirectional.
- C . A service will use the same service label for every hop.
- D . A local service requires a transport tunnel.
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
From what range are 16-bit private AS numbers selected?
- A . 64496 C 64511
- B . 1 C 56319
- C . 64512-65534
- D . 64513-65535
- E . There are no defined private AS numbers; there are only private IP addresses.
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.
Which of the following regarding MPLS label value assignment is FALSE?
- A . Label values may be dynamically assigned by LDP.
- B . Label values may be dynamically assigned by RSVP-TE.
- C . Label values may be reserved for special uses.
- D . Label values may be dynamically assigned by IGP.
Click on the exhibit.
An LDP tunnel is established on router R1 towards router R6. The link between routers R2 and R4 goes down .
What will happen to the MPLS data traffic to router R6 IMMEDIATELY after the link goes down?
- A . MPLS data traffic will be discarded until the IGP finds a new next-hop to router R3.
- B . MPLS data traffic will be discarded unless the LDP tunnel has a standby secondary path.
- C . MPLS data traffic will not be discarded because router R1 received labels from both next-hops, routers R2 and R3.
- D . MPLS data traffic will not be discarded because of fast reroute capability on router R2.
Which of the following about the Isp-ping command on the Nokia 7750 SR is FALSE?
- A . An echo request is sent based on the LSP’s label stack.
- B . Echo reply packets may not take the same path as the LSP.
- C . The IP destination address is used to initiate echo requests,
- D . The test fails if the LSP is not operationally up.
Click on the exhibit.
LSP 1’s link between routers R3 and R6 has failed, and the RESV state at router R3 has timed out .
Which of the following actions will router R3 initiate?
- A . Send a PathTear message towards router R6.
- B . Send a PathTear message towards router R1.
- C . Send a ResvTear message toward router R6.
- D . Send a ResvTear message toward router R1.
What class of attribute is Originator_ID?
- A . Well-known mandatory.
- B . Well-known discretionary.
- C . Optional transitive.
- D . Optional non-transitive.
What is the function of the Cluster_List attribute?
- A . It is used for loop detection within the same cluster.
- B . It is used for loop detection between clusters.
- C . It is used for loop detection in a confederation.
- D . It is used to identify the route reflectors within an AS.
What are the ways the RID can be created on an Nokia 7750 SR router? (Choose three)
- A . From the last 32 bits of the chassis MAC address
- B . From the first 32 bits of the chassis MAC address
- C . The loopback IP address
- D . By using the command "config router ospf rid X.X.X.X"
- E . From the system IP address
- F . From the highest interface IP address
Which of the following is a characteristic of LDP Hello messages?
- A . They are multicast to the All Hosts address.
- B . They are broadcast to the subnet broadcast address.
- C . They are multicast to the All Routers address.
- D . They are broadcast or multicast, depending on the physical media.
Click the exhibit.
This is output from router R4. Service 333 is a VPLS .
Why does peer 10.10.10.1 not have an EgrLbl?
- A . The SDP to 10.10.10.1 on router R4 is shutdown.
- B . Router R4 has not sent a label to router R1 (10.10.10.1) yet.
- C . 10.10.10.1 has a different service MTU set.
- D . 10.10.10.1 has not sent a label to router R4 yet.
Click on the exhibit.
An LDP tunnel is established on R1-R2-R4-R6 because the link between routers R3 and R6 is down.
With the LDP-IGP Sync feature enabled, what happens immediately after the link is restored?
- A . A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.
- B . The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.
- C . A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router R6.
- D . The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.
Which of the following about CSPF is TRUE?
- A . The tail-end router performs the CSPF calculation for an LSP.
- B . CSPF calculations are always performed on RSVP-TE based LSPs.
- C . The head-end router performs the CSPF calculation for an LSP.
- D . Each downstream router performs its own CSPF calculation for an LSP.
Which of the following commands is used to display the database containing the OSPF-TE LSAs?
- A . show router ospf opaque-database
- B . show router ospf database
- C . show router ospf opaque-Isa
- D . show router ospf te opaque
What is the default preference value for a static route in the Nokia 7750 SR router?
- A . 0
- B . 5
- C . 10
- D . 15
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 about Type 10 opaque LSAs is TRUE?
- A . Type 10 opaque LSAs are supported by IS-IS.
- B . Type 10 opaque LSAs are flooded to all areas of the routing domain.
- C . Type 10 opaque LSAs are stored in an LSDB.
- D . Type 10 opaque LSAs are used for traffic engineering support.
In an IP datagram, which of the following fields identifies the receiving application?
- A . The protocol field of the transport layer header.
- B . The port field of the transport layer header.
- C . The protocol field of the network layer header.
- D . The port field of the network layer address.
What causes an adjacency to change from down to two ways?
- A . When a link state update is received in response to a link state request.
- B . When a router receives a Hello packet that contains its own router ID in the neighbor list from a neighbor.
- C . When a router receives a database description packet from a neighbor.
- D . When a link state acknowledgement is received in response to a link state update.
A VPLS receives a frame with the single VLAN tag 35 on the Q-in-Q SAP 1/1/1:35.* .
Which of the following describes default Nokia 7750 SR behavior?
- A . The frame is dropped.
- B . The VLAN tag is removed, and the frame is transported over the network.
- C . The VLAN tag is kept, and the frame is transported over the network.
- D . The VLAN tag is kept, a VLAN of 0 is added, and the frame is transported over the network.
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.
An IS-IS TE enabled router has an interface on a 500Mbps link and it is configured with a 25% subscription.
If this interface is not used by any LSPs. what value will be shown in the Reservable Bandwidth sub-TLV?
- A . 125 Mbps
- B . 500 Mbps
- C . 625 Mbps
- D . 2000 Mbps
When an OSPF adjacency is stuck in the "ExchStart" state, what is the most likely cause?
- A . The MTU does not match on both interfaces
- B . OSPF is not enabled on one of the routers
- C . The Router ID is the same on both routers
- D . A OSPF Hello has not been received from the neighbor
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.
The output is from PE router R1 about VPRN service 100.
From which protocol did router R1 learn the prefix 192.168.20.0/24?
- A . LDP
- B . BGP
- C . MP-BGP
- D . MPLS
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.
Click the exhibit.
The two PEs are providing 6VPE and IPv4 VPRNs. The core network is IPv4/MPLS .
Which of the following is the BGP family configuration for the MP-BPG on the PEs?
- A . family ipv4 ipv6
- B . family vpn-ipv4ipv6
- C . family vpn-ipv4 vpn-ipv6
- D . family ipv6 vpn-ipv6
A network consists of four PE routers. A customer requires a VPLS and has sites connected to each PE. The VPLS is fully meshed using IP/MPLS .
How many SDPs must be configured on each PE?
- A . 3
- B . 4
- C . 6
- D . 8
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
Which of the following commands can be used to display the number of SPF computations that have been performed on a router?
- A . show router ospf area <area-id>
- B . show router ospf neighbor
- C . show router ospf interface
- D . show router ospf status
Select the answer below that correctly lists the 5 different OSPF packet types.
- A . Hello, Link State Update, Link State Packet, Link State Acknowledgement, Database Descriptor
- B . Link State Update, Link State Refresh, Link State Acknowledgement, Database Descriptor, Notification
- C . Hello, Link State Refresh, Link State Update, Link State Acknowledgement, Link State Authentication
- D . Hello, Link State Update, Link State Request, Link State Acknowledgement, Database Descriptor
How are policy direction and data flow related on the Nokia 7750 SR?
- A . Import policies affect ingress data flow.
- B . Export policies affect ingress data flow.
- C . Both import and export policies affect ingress data flow.
- D . Policy direction and data flow are independent.
Which of the following best describes downstream on demand label distribution?
- A . An LSR answers requests for label mappings immediately, without waiting for a label mapping from the next-hop.
- B . An LSR advertises label mappings to all peers for which it might be a next-hop for a given FEC.
- C . An LSR distributes a label mapping for a FEC when it has been requested to do so.
- D . An LSR propagates a label mapping downstream for a FEC. only if it has a label mapping for the FEC’s next-hop.
Which of the following about LDP sessions is TRUE?
- A . Frame mode requires multiple sessions between peers.
- B . The lower transport address initiates the session.
- C . Established LDP sessions run over a TCP connection.
- D . An LDP session is established immediately after Init messages are exchanged between peers.
What is the default inbound metric for RIP on the Nokia 7750 SR?
- A . What ever the advertised metric happens to be.
- B . A value of 1.
- C . This must be administratively set as there is no default value.
- D . A value of 15.
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.
Which of the following is a characteristic of a VPLS?
- A . All SAPs of a VPLS belong to the same broadcast domain.
- B . When a new site is added, all the existing sites need to be shutdown and re-provisioned.
- C . An additional T-LDP session is required between PEs for each additional VPLS that is provisioned.
- D . Multiple VPLSes on the same router share a single MAC FDB.
Click on the exhibit.
When router R1 forwards a PATH message to router R2, which of the following about the PATH message’s IP header is TRUE?
- A . The options field is set to router alert.
- B . The source address is R1’s egress interface address.
- C . The destination address is R2’s ingress interface address.
- D . The HOP object includes R2’s system address.
An autonomous system has 7 routers configured with BGP .
How many iBGP sessions are required for a fully meshed configuration?
- A . 7
- B . 13
- C . 21
- D . 42
What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas?
- A . Type 1
- B . Type 3
- C . Type 4
- D . Type 7
What is the purpose of configuring a triggered-policy on an Nokia 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.
Which of the following regarding the location of an MPLS label is FALSE?
- A . The MPLS label value may be carried in an ATM header.
- B . The MPLS label value may be carried in a shim header.
- C . The MPLS label value may be carried in an OSPF header.
- D . The MPLS label value may be carried in a Frame Relay header.
Click on the exhibit.
Two LSPs traverse the path R1-R2-R3. Both LSPs are configured with facility fast reroute and link protection.
When router R1 is the PLR, which router becomes the Merge Point (MP) for this LSP?
- A . Router R1
- B . Router R2
- C . Router R3
- D . Router R4
- E . Router R5
How is the aggregator attribute handled with 32-bit AS numbers?
- A . With the same method and attribute as 16-bit AS numbers.
- B . With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.
- C . Aggregation is not yet supported with 32-bit AS numbers.
- D . By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.
Which of the following is TRUE when the explicit null is implemented?
- A . The penultimate router will forward packets to the eLER, based on the IP header.
- B . The eLER will receive packets with a top label value of 0.
- C . The eLER will receive packets with a top label value of 3.
- D . The penultimate router will pop the top label from the packets.
What is the purpose of a T-LDP session?
- A . It allows link LDP to be configured on the edge devices only.
- B . It is used to signal the transport labels in the provider core.
- C . It allows selective control over which devices are configured for LDP.
- D . It is used to signal the service labels in the provider core.
In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?
- A . Not so stubby area
- B . Stub area
- C . Backbone area
- D . Normal area
In an OSPF environment, what must a router receive after it sends out an update?
- A . The router must receive an acknowledgment
- B . The router must receive a Hello
- C . The router must receive a new sequence number
- D . The router must receive a Link State Packet
There is an IP host with IP address 10.2.3.1. A static route is created, using the "configure router static-route 10.2.3.0/24 next-hop 10.1.2.1" command .
What is the correct traceroute command to test this static route on an Nokia 7750 SR?
- A . traceroute 10.2.3.1
- B . traceroute 10.2.3.1 next-hop 10.1.2.1
- C . traceroute next-hop 10.1.2.1
- D . traceroute does not work on the Nokia 7750 SR.
- E . traceroute 10.1.2.1
Which of the following statements regarding area border routers in an OSPF network is true?
- A . The term backbone router has the same definition as the term area border router.
- B . An OSPF network needs at least one area border router to function.
- C . Area border routers connect the backbone area to other areas in an OSPF network.
- D . By definition, an area border router must perform route summarization between areas.