4A0-C01 Practice Exam Questions with Answers Nokia NRS II Composite Exam Certification

3000ms

9000ms

30000ms

120000ms

Router LSA

Network LSA

Intra-Area Prefix LSA

Link LSA

Neighbor, adjacency, routing.

Neighbor, topology, forwarding.

Topology, routing, forwarding.

Topology, forwarding, traffic classification.

Neighbor, adjacency, forwarding.

It represents a group of routers on the same non-broadcast network.

It represents the topological database of the backbone network in an IS-IS network.

It represents a broadcast sub-network.

It represents the complete topology of an IS-IS area.

Type 1

Type 3

Type 4

Type 7

The egress RSVP interface has 80 percent bandwidth unreserved.

LSPs can reserve an additional 9.9 Gbps bandwidth on this RSVP interface.

The head end reserves 100Mbps for the LSP

The egress RSVP interface has 1 Gbps bandwidth unreserved.

'asbr' is missing from router R1's configuration.

Router R1 needs to have an export policy added to it.

Router R5 does not have an export policy for these prefixes.

Router R1 needs to have an import policy added to it.

The primary and backup routes are to the same destination.

The primary and backup routes appear in the routing table.

The backup route is configured with a higher preference value.

The next-hop of the primary and backup routes are different.

A PUSH label stack operation must be performed.

The outgoing interface and next-hop address will be determined from the FIB.

The packet can be forwarded as a labeled or unlabeled packet.

A POP label stack operation may be performed.

LSR

LER

eLER

iLER

CE

Yes, A routing policy is required to advertise routes between PE routers in a VPRN regardless of the CE-PE routing.

Yes, A routing policy is required in this case because BGP is used as the PE-CE routing protocol.

No, a routing policy is not required. By default, the Alcatel-Lucent 7750 SR will advertise all VPRN routes between PE routers.

No, a routing policy is not required on PE1, but an import policy is required on PE2.

TRUE

FALSE

An export policy is required on PE1 to advertise routes to CE1.

An export policy is required on CE1 to advertise local routes to PEL

An export policy is required to advertise routes between the PE routers.

No export policy is required on PE2 or CE2 due to the static routes.

TRUE

FALSE

Route distinguishes are contained in VPN-IPv4 prefixes.

Route distinguishes allow the same IP prefix to be used for more than one destination in a single VPRN.

Route distinguishes allow MP-BGP to manage multiple routes for the same IP prefix.

Route distinguishes are only used by the PE routes.

A packet receives a service label and a transport label at the ingress PE.

A packet has its service label swapped at each P router.

The egress PE pops the service label, and the transport label is forwarded.

The service label is popped by the remote CE.

P routers run IPv4 only. PE routers run IPv4 only and exchange IPv6 routes using MP-BGP.

P routers run IPv4 only. PE routers run both IPv4 and IPv6 and exchange IPv6 routes using MP-BGP.

P routers run IPv6 only. PE routers run both IPv4 and IPv6 and exchange IPv4 routes using MP-BGP.

P routers run IPv6 only. PE routers run IPv6 only and exchange IPv4 routes using MP-BGP.

It makes use of MPLS resiliency features available within an AS.

It eliminates double route lookups on all routers within an AS.

It eliminates the need to run IGP on all routers within an AS.

It eliminates the need for an iBGP full mesh on all core routers.

The PLR issues an RSVP PATH message to the tail-end requesting the address of the MP.

The PLR learns the address of the MP from the ERO.

The PLR learns the address of the MP from the RRO.

The PLR learns the address of the MP from the targeted RSVP Hello message.

The PLR knows the address of the MP is the same as the tail-end router.

A separate label is used for each interface on which the FEC is advertised.

A single label is assigned to a FEC for all interfaces on the same router,

It is typically used when the device has ATM or Frame Relay interfaces.

It uses more label resources than a per-interface label space.

A route target is a BGP extended community used to identify the VRF table for a prefix at the receiving PE

A route target is a mechanism from which VPRN controls the distribution of VPN routing information.

Route target attributes are earned in a MP-BGP as attributes of the route.

A route target is used by the PE router to identify the VRF that a VPN-lPv4 prefix is associated with.

All of the above statements describe a route target

None of the above statements describe a route target

TRUE

FALSE

To test the ability of reaching the far-end IP address of an SDP within the SDP encapsulation

To determine the path MTU to the far-end IP address over an SDP.

To determine the service MTU of the service using an SDP.

To determine the presence of hosts using the service

A physical port.

ASAP.

Ingress MPLS frames with a specific label.

Entries that match an IP filter.

Entries that match a MAC filter.

All of the above can be used as a mirror source.

The LSP will switch to R1-R3-R5-R6 after the resignal timer expires.

The old primary path and its detours are torn down after the new primary path is established.

CSPF must be enabled to find a more optimal path.

The traffic is switched to R1-R3-R5-R6 in an MBB fashion.

TRUE

FALSE

Traffic is flooded to all SAPs in the service.

Traffic is flooded to all SAPs and spoke SDPs in the service.

Traffic is flooded to all SAPs and mesh SDPs in the service.

Traffic is flooded to all SAPs, spoke SDPs, and mesh SDPs in the service

The traffic is not flooded.

A data packet will receive a service label at the CE and a transport label at the ingress PE.

A data packet intended for a remote CE will have its service label swapped at each P router along the path towards the egress PE.

At the egress PE, the transport label will be popped and the data packet forwarded with the service label.

The service label is popped by the remote CE. The unlabeled packet is forwarded based on the longest match lookup algorithm in the VRF.

All of the above statements are false.

All of the above statements are true.

IP packets sent to an IP multicast address.

Ethernet frames sent to an Ethernet multicast address.

IP packets sent to an IP unicast address.

UDP packets sent to an IP multicast address.

IPv6 uses the Address Resolution Protocol to resolve the address to a MAC address.

A Neighbor Discovery message is sent to the broadcast MAC address. The host with the IPv6 address responds with a Neighbor Advertisement message.

A Neighbor Discovery message is sent to the solicited-node multicast address. The host with the IPv6 address responds with a Neighbor Advertisement message.

A Neighbor Discovery message is sent to the anycast address for the LAN. The host with the IPv6 address responds with a Neighbor Advertisement message.

IPv6 addresses do not need to be resolved to a MAC address.

Non-broadcast

Broadcast

Point-to-multipoint

Point-to-point

An L1/L2 router can have neighbors in different areas.

An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

An L1/L2 router advertises its L2 routes to its L1 neighbors.

An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router.

0

5

10

15

config>filter# default-action XXX

config>filter>ip-filter# default-action XXX

config>filter# default-mode XXX

config>filter>ip-filter# default-mode XXX

The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS

The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS

The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.

The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.

config> static-route 0.0.0.0/0 next-hop 10.1.2.2

config>router> static-route 0.0.0.0 255.255.255.255 next-hop 10.1.2.1

config>router> static-route 0.0.0.0/0 next-hop 10.1.2.2

config>router> static-route 0 0.0 0/0 next-hop 10.1.2.1

The metric must be set accordingly for RIP

The subnet mask must be removed from the OSPF route

You must divide the cost of the OSPF route by three

The router must be configured as an ASBR

No protocol extensions required

Only supported by OSPF and IS-IS

Transparent to routing neighbors

Uses Graceful Restart to inter-operate with other vendors

Different types of Hello packets are exchanged on point-to-point networks than on broadcast networks.

L1/L2 Hello packets are exchanged on broadcast links.

Different L1 and L2 Hello packets are exchanged on broadcast links.

By default, Hello packets are sent every 5 seconds, and the timeout to declare a neighbor down is 15 seconds.

When a Link State Update is received in response to a Link State Request

When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list

When OSPF neighbors exchange Database Descriptor packets

When a Link State Acknowledgement is received in response to a Link State Update

traceroute 2.3.4.1

traceroute 2.3.4.0/24 next-hop 1.2.3.4

traceroute next-hop 1.2.3.4

traceroute does not work on the Alcatel-Lucent 7750 SR

Use an import policy and a prefix list on router R2.

Use an export policy and a prefix list on router R1.

Use an import policy and a prefix list on router R1.

Router R1 cannot discard the route because IS-IS does not support import policies.

TRUE

FALSE

The area addresses TLV

The intermediate system neighbors TLV

The IP interface address TLV

The authentication information TLV

A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.

A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area.

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.

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.

Hello

Link-state request

Link-state acknowledgment

Link-state update

Database description

Link

AS External

Router

Intra-Area Prefix

TE enabled OSPF routers

Backbone router only

ABR only

ASBR only

TRUE

FALSE

The LSP will go through the path R1-R2-R4-R6.

The LSP will go through the path R1-R3-R5-R6.

The LSP is down because router R1 detects that no path can meet its constraints.

The LSP is down because router R4 detects that no path can meet its constraints.

Link TLVs are used to advertise administrative group information.

Link TLVs are exchanged once RSVP is enabled on the interfaces.

Link TLVs are used to advertise router-IDs.

Link TLVs are used to advertise bandwidth information.

Local FECs not included in the 192.168.1.0/24 address space and the system IP FEC.

Only the system IP FEC appears in the LIB.

Any local FECs, except those with a 24-bit mask.

Local FECs in the 192.168.1.0/24 address space.

TRUE

FALSE

The LSP can use facility and one-to-one FRR simultaneously.

The LSP is limited to node protection.

A single protection tunnel is used for all LSPs with the same path.

A detour protection tunnel is created for the LSP.

Service ID

Customer ID

SAPID

VC-ID

SDPID

configure ies 5 customer 1000 create

configure router ies 5 customer 1000 create

configure service ies 5 customer 1000 create

configure router ies 5 customer 1000

The DMP sends the DMP_Object in each detour's PATH messages.

The DMP summarizes PATH messages, giving each detour its own MSGJD.

The DMP identifies itself as the previous hop in each detour's PATH message.

The DMP sends a single PATH message containing the merged DETOUR_Objects.

It requests a new label from the peer that provided this label.

It pops the label.

It pushes an additional label onto the label stack.

It signals a new label to the peer that sent the packet.

Fast reroute is used when redundant links are not available.

Fast reroute provides path protection close to the failure point.

Fast reroute provides fast failure detection to the head-end router.

Fast reroute protects both primary and secondary paths.

Secondary_Path-1

Secondary_Path-2

Secondary_Path-3

Secondary_Path-4

R1-R2 will have 300Mbps left and R2-R4 will have 400Mbps left.

R1-R2 will have 400Mbps left and R2-R4 will have 400Mbps left.

R1-R2 will have 600Mbps left and R2-R4 will have 600Mbps left.

R1-R2 will have 300Mbps left and R2-R4 will have 600Mbps left.

The protocol field of the transport layer header

The port field of the transport layer header

The protocol field of the network layer header

The port field of the network layer address

The DIS creates a logical node to represent a group of routers on the same non-broadcast network; this node is the pseudonode

The DIS creates a logical node to represent the topological database of the backbone network in an IS-IS network; this node is the pseudonode

The DIS creates a logical node to represent a broadcast sub-network; this node is the pseudonode

The DIS creates a logical node to represent the complete topology of an IS-IS area; this node is the pseudode

The adjacency state is two way because both routers have received a database description packet.

The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.

The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.

The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.

1

2

3

4

6

7

Each implementation can use them as they see fit.

They are used to carry the Ethertype value.

They are used to carry the TTL value.

They are used to carry QoS classification.

They are used to carry fragmentation flag information

CSPF chooses a link that is a member of both administrative groups

CSPF chooses only those links that are NOT members of the green admin group

CSPF prunes the green links and uses these links for the secondary path

CSPF signals the LSP path over the green links only, and prunes all other links

The system ID

The loopback address

The sequence number of the Hello packet

The device that first initiated communication becomes the DIS

The highest interface MAC address

Challenge handshake authentication protocol (CHAP)

Two factor authentication

MD5 authentication

Extensible authentication protocol (EAP)

RIB

FIB

LIB

LFIB

Conservative label retention

Liberal label retention.

Downstream on demand.

Downstream unsolicited.

Type 1 Router LSA

Type 2 Network LS A

Type 3 Summary LSA

Type 5 External LSA

Not so stubby areas

Level1 area WC

Stub areas

Partially stubby areas

Level 2 areas

The MTU does not match on both interfaces

OSPF is not enabled on one of the routers

The Router ID is the same on both routers

A OSPF Hello has not been received from the neighbor

Router R1

Router R2

Routers R1 and R2

Router R4

RIPv1, RIPv2, and BGP are distance vector protocols.

OSPF and IS-IS are distance vector protocols.

Routing tables are exchanged between neighbors; however, no routing table is transmitted beyond the immediate neighbor.

Distance vector protocols use the Dijkstra SPF algorithm.

Routers that participate in distance vector routing protocols maintain full knowledge of distant routers and how they interconnect

The router must receive an acknowledgment

The router must receive a Hello

The router must receive a new sequence number

The router must receive a Link State Packet

The system interface is configured with IPv6 address 2001DB8 1:100:1/128

All interfaces are configured for IPv4 and IPv6.

Interface "toR2" is configured with a globally routed IPv6 address.

Interface "toR3" is not configured for IPv6 with a global IPv6 address.

Option A

Option B

Option C

Option D

RIPv1 and RIPv2

OSPF

IS-IS

BGP

Ping static 3.3.3.1

Ping static 0.0.0.0/0

Ping 3.3.3.1

Ping 0.0.0.0

Intra-Area Prefix LSA

Router LSA

AS External LSA

NSSA LSA

There are five broadcast links and there are no point-to-point links.

There are five broadcast links and there are five point-to-point links.

There are five broadcast links. It's not possible to say how many point-to-point links there are.

It's not possible to say how many broadcast or point-to-point links there are.

The router sends a copy of the LSP from its database to its neighbor.

The router updates its database with the LSP and floods a copy to its other neighbors.

The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors.

The router updates its database with the LSP and acknowledges it with a PSNP.

Administrative Groups

Shared Risk Link Groups

Strict hop LSP paths

Fast reroute

The vc-id on the spoke-sdp must be explicitly configured.

The vc-id on the mesh-sdp must be explicitly configured.

The vc-id on the spoke-sdp can be configured to match the service id.

The vc-id on the mesh-sdp can be configured to match the service id.

The vc-id on the spoke-sdp does not have to be explicitly configured and will use the service id.

The vc-id on the mesh-sdp does not have to be explicitly configured and will use the service id.

Per-platform label space, conservative retention mode

Per-interface label space, conservative retention mode

Per-platform label space, liberal retention mode

Per-interface label space, liberal retention mode

A packet arriving with label 131066 will be forwarded out interface 1 /1 /4 with label 131070.

The router is an egress router for FEC 10.10.10.221/32.

There are multiple LSPs to reach FEC 10.10.10.244/32.

The router's system address is 10.10.10.242/32.

0

2

3

4

All FECs with a prefix of 192.168.1.0/30.

Local FECs with a prefix of 192.168.1.0/30.

All FECs excluding 192.168.1.0/30.

Local FECs excluding 192.168.1.0/30.

Provides a mechanism to determine the hops an SDP traverses.

Provides in-band uni-directional connectivity tests.

Provides in-band round-trip connectivity tests.

Tests ability of reaching the far-end IP address of an SDP ID within the SDP encapsulation.

Provides information regarding the exact MTU supported between service ingress and service termination.

1

4

6

8

12

24

Routers R1 and R2 are in different areas.

Routers R1 and R2 are in the same area.

Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is point-to-point.

Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is broadcast.

Routers R1 and R2 will send a Level 1/2 Hello PDU if the interface type between them is broadcast.

IP packets sent to an IP multicast address.

TCP packets sent to an IP multicast address.

IP packets sent to an IP unicast address.

UDP packets sent to an IP multicast address.

The router sends a copy of the LSP from its database to its neighbor

The router sends a PSNP to its neighbor describing the LSP in its database.

The router updates its database with the LSP and floods a copy to its other neighbors.

The router sends a PSNP to its neighbor to request the LSP.

True

False

The corporate head office router will have a default route and the branch site will have a more specific static route.

The corporate head office router and the branch office router will both have specific static routes.

The corporate head office router and the branch router will both have default routes.

The corporate head office router will have a more specific static route and the branch office router will have a default route.

Tunnel Label

VC Label

Operational Control Word

UNI

NNI

The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.

The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.

The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

They are used to identify the VRF table for a prefix at the receiving PE.

They are used by VPRNs to control the distribution of VPN routing information.

They are distributed to all PEs and CEs that are part of the VPRN.

They are distributed to PEs to identify the VRF table that a VPN-IPv4 prefix is associated with.

Route distinguishes are used to ensure that VPRN IP prefixes are globally unique.

Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.

Route distinguishes are used to determine which routes a VPRN should import.

CE routes use a route distinguisher to indicate which VPRN they are associated to.

The Ethernet port must be set to network mode, and the service must have a spoke SDP.

The Ethernet port must be set to network mode.

The Ethernet port must be set to access mode.

The Ethernet port must be set to access mode, and the service must have a spoke SDP.

An Ipipe is a point-to-point Layer 2 VPN capable of only carrying Ethernet payloads. An Epipe interworking refers to the transportation of ATM/FR traffic over an Epipe.

An Ipipe is used for performing Ethernet interworking with ATM/FR/PPP using bridged-PDUs. An Epipe interworking is used for performing Ethernet interworking with ATM/FR/PPP using routed-PDUs.

An Ipipe is used for performing Ethernet interworking with ATM/FR/PPP using routed-PDUs. An Epipe interworking is used for performing Ethernet interworking with ATM/FR/PPP using bridged-PDUs.

None of the above.

0

2

3

6

The VC-IDs used between the E-pipe and VPLS must match.

The E-pipe must maintain a MAC FDB in order to connect to the VPLS.

The service ID of the E-pipe can be different from that of the VPLS.

The service MTU of the VPLS and E-pipe must match.

By default, the VC ID on the mesh SDPs of a VPLS are set to the service ID.

A VPLS appears to the customer as a direct Ethernet connection.

Mesh SDPs are used for VPLSes to avoid loops.

By default, T-LDP is used for signaling service labels.

Traffic is flooded to all SAPs in the service.

Traffic is flooded to all SAPs and spoke SDPs in the service.

Traffic is flooded to all SAPs and mesh SDPs in the service.

Traffic is flooded to all SAPs, spoke SDPs, and mesh SDPs in the service.

The traffic is not flooded.

6VPE is a tunneling technology that makes use of MPLS tunnels to transport IPv6 information over an IPv4 MPLS infrastructure.

Customers connected to 6VPE could run native IPv6 or IPv4.

On the PE router, the next hop for a VPN IPv6 address is an IPv6 address, regardless of the nature of the network between the PEs.

6VPE requires an IPv6-aware MPLS core.

Both C and D are false.

All of the above statements are true.

Spoke SDPs prevent loops in a VPLS.

Mesh SDPs and spoke SDPs can be used in the same VPLS.

A spoke SDP does not require the routers at both ends to be directly connected.

A mesh SDP is identical to a spoke SDP except for its flooding behavior.

An SDP is not required for a local service.

A single SDP can carry different types of services.

An SDP can simultaneously support GRE and MPLS encapsulation.

An SDP can use the system IP address to indicate the far-end router.

It tests the IGP reachability of the far-end IP address of an SDP.

It tests that the MTU settings of a service are correct.

It tests in-band, uni-directional or round-trip connectivity of SDPs.

It tests the reachability of hosts connected to an SDP.

The frame is dropped.

VLAN tags 2 and 3 are added to the frame.

Only outer VLAN tag 2 is added.

Only inner VLAN tag 3 is added.

ping

sdp-ping

svc-ping

Isp-ping

The frame egresses from 1/1/1:6 with no VLAN tag.

The frame egresses from 1/1/1:6 with VLAN tag 5.

The frame egresses from 1/1/1:6 with VLAN tag 6.

The frame egresses from 1/1/1:6 with an inner VLAN tag of 5 and an outer VLAN tag of 6.

A CE router.

A P router.

A PE router.

Both P and PE routers.

Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.

CE routers use a route distinguisher to indicate which VPRN they are associated to.

A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.

Route distinguishes are used to determine which routes a VPRN should import.

An SDP can be used by more than one service and customer.

A SAP can only be created on an access port.

A customer can have multiple services associated to it.

A customer is only created on one site of a distributed service.

3

4

6

8

The outer label allows traffic to transit across the MPLS network.

The inner label identifies the VPRN service.

MP-BGP is used to signal VPRN labels.

The VPRN service label contains the customer's IP address.

Customer ID and SAP ID.

Customer ID and Service ID.

SAP ID and Service ID.

SDP ID and Service ID.

SDP ID and SAP ID.

SDP ID and VC ID.

A "remote-source" needs to be added to the mirror destination on PEL

A mirror source needs to be added to PE1 with a "remote-source".

This is not possible since the protocol analyzer is located at the Central Office. It needs to be at the customer site.

A mirror source with SAP 1/1/2 needs to be added on PEL

Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7-R6-R4-R2-R1)

Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7-R6-R5-R3-R1)

Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7-R6-R4-R2-R1)

Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7-R6-R5-R3-R1)