Free 4A0-C01 Exam Dumps Preview

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 the complete topology of an IS-IS area.

ATM to Frame Relay translation.

Frame Relay to Ethernet translation.

ATM tunneling over a Frame Relay core network.

Ping static 3.3.3.1

Ping static 0.0.0.0/0

Ping 0.0.0.0

Level1 area WC

Partially stubby areas

Level 2 areas

configure service vpls 4 customer 4 vc-id 5 create

configure service vpls 100 customer 4 vc-id 4 create

configure service vpls vc-id 5 customer4 create

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

Label space mode

Label retention

Control mode

CAC is used when the LSP path has not been computed by CSPF.

CAC is used when the LSP path has been computed by CSPF.

CAC is used to perform a bandwidth check on each egress interface of the downstream router.

10.10.10.2

10.10.10.3

10.10.10.4

10.10.10.6

Configure router ipv6 static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3

Configure router ipv6 static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3-toR2

Configure router static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3

The route was learned through a dynamic routing protocol.

Service tunnels are unidirectional.

Transport tunnels are unidirectional.

A service will use the same service label for every hop.

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 PUSH label stack operation may be performed.

To reduce the number of LDP sessions

To reduce the number of LIB and LFIB entries

To export summarized routes from OSPF to LDP

If the frame has a VLAN tag of 33, it is accepted.

If the frame has a tag other than 33, it is dropped.

If the frame is untagged, it is dropped.

Both LSP-3 and LSP-4 take R1-R2-R4-R6.

LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

CSPF randomly chooses one of the equal cost paths for the two LSPs.

A mechanism that implements opaque LSAs.

A mechanism that ensures the IGP best route is used.

A mechanism that enables LDP signaling to use a route other than the IGP best route.

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 on PE1, but an import policy is required on PE2.

ping

traceroute

Isp-trace

Drop the frame.

Send a destination unreachable message back to the originating host.

Store the frame until the destination is known

Link State Updates

Link State Advertisements

Intermediate System Update Packets

The router performs a unidirectional LSP test.

The router collects hop information along the tunnel's path.

The MPLS TTL values are incremented at each request.

The IP header source address is the sender's egress interface address.

The IP header destination address is the next-hop interface address.

The IP header HOP object reflects the upstream router's egress interface address.

configure epipe service-id customer customer-id create

configure epipe service-id create

configure epipe service-id customer customer-id create

configure epipe service service-id customer customer-id create

Each PLR signals a detour LSP that avoids the downstream node. If the downstream node cannot be avoided, a detour LSP that avoids the downstream link is signaled.

The detour LSP can take one or more hops before merging back on the protected LSP.

The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish detour LSPs.

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 the complete topology of an IS-IS area; this node is the
pseudode

Each PLR signals a bypass tunnel that avoids the next-hop downstream router.

When a failure occurs, the PLR pushs an additional label onto the label stack.

The head-end router sets the local protection desired flag in the session attribute object.

10 Gbps

7 Gbps

3 Gbps

An L1 adjacency will be formed.

An L1/L2 adjacency will formed

L2 adjacency will be formed

Fixed filter

Standby explicit LSP

Preemptive filter

Link capacity filter

LDP

BGP

MPLS

0

2

3

configure router sdp sdp-id

configure service sdp sdp-id create

configure service mpls sdp sdp-id create

configure service gre sdp sdp-id create

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

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

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

iLER message

LSP setup call request

eLER message

1

3

12

Refresh reduction applies only to reservation messages.

RSVP generates a summary-refresh message for each LSP.

The LSP will stay on the current path indefinitely unless another failure occurs.

The LSP will stay on the current path until the resignal timer expires.

The LSP will switchover to R1-R2-R3-R5-R6 after the resignal timer expires.

The number of VPRN routes can become very large. MP-BGP can support a very large number of routes.

MP-BGP can carry routing information for a number of different address families.

MP-BGP is designed to exchange information between routers that are not directly connected. This feature keeps VPRN routing information out of P-routers.

MP-BGP can carry additional information attached to a route as an optional BGP attribute.

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 for an iBGP full mesh on all core routers.

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.

When the interface to the peer router is down.

When LDP is not configured on the peer router's interface.

When the targeted session is not configured.

0

2

6

49.0012.1234

12.1234

1234

49.1234

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 an inner VLAN tag of 5 and an outer VLAN tag of 6.

Both LDP and RSVP-TE based tunnels can be used.

MPLS tunnels can be used to resolve the prefixes learned via IGP.

Multiple MPLS tunnels can be installed in the FIB.

The outer label TTL will be 249 and the inner label TTL will be 250.

The outer label TTL will be 251 and the inner label TTL will be 251.

The outer label TTL will be 251 and the inner label TTL will be 252.

Family ipv4

Family ipv6

Family ipv4 ipv6

Family vpn-ipv4

1596

1600

1614

System interface not included in OSPF

Different metric set on each end of the link

Router ID not defined

To reduce the size of each routing update.

To allow interoperability between routing protocols.

To reduce the size of the routing table.

L-LDP

T-LDP

RSVP-TE

The ports of the link PE2-PE3 have an MTU of 1578.

An svc-ping of the E-pipe will succeed.

If the step size was 2, the maximum response size would be the same.

Router R1 will discard traffic because the secondary path is not a fully strict path.

Router R1 will switch traffic to the secondary path right after it is notified of the link error.

Router R1 will discard traffic until a new IGP route to router R6 is re-calculated.

VC Label

Operational Control Word

UNI

NNI

The protocol field of the transport layer header

The protocol field of the network layer header

The port field of the network layer 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 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.

MD5 Authentication is not supported.

Router LSAs do not carry IPv6 prefix information

OSPFv3 uses a 32-bit router ID.

RSVP

IPCP

PPP

Either RSVP or LDP

M-BGP

Type 1 Router LSA

Type 3 Summary LSA

Type 5 External LSA

Next Header

Traffic Class

Hop Limit

Flow Label

The routing information base (RIB).

The equal cost multipath configuration (ECMP).

The forwarding information base (FIB).

The link state database (LSDB).

Acts as a logical way to direct traffic from one SAP to another on a single node.

Acts as a logical way to direct traffic from one service to another on a single node.

Acts as a logical way to direct traffic from one access port to another.

A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.

The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.

A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router
R6.

LSP 1 will follow R1-R3-R4-R5. LSP 2 will follow R1-R2-R5.

LSP1 will follow R1-R2-R5. LSP 2 will follow R1-R3-R4-R5.

Both LSP 1 and LSP 2 will follow R1-R3-R4-R5.

The peer with the higher physical address.

The peer with the lower physical address.

The peer with the lower transport address.

The peer that generated the first Hello message.

configure ethernetencap-typedot1q|null|qinq port port-id

configure service port port-id ethemetencap-typedot1q|null|qinq create

configure service service-id Ethernet encap-type dot1q|null|qinq create

Source IP address

TCP source port

Prefix list

Router LSA

Inter-Area Prefix LSA

Link LSA

IS-IS supports VLSM and CIDR.

IS-IS uses OSI addressing.

IS-IS uses periodic Hello messages.

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.

The traffic is not flooded.

The ARP functionality is not needed due to the increased IPv6 address space.

ICMPv6 reduced its role to connectivity checking and auto-configuration only.

ICMFV6 replaced the ARP functionality with Multicast Listener Discovery (MLD).

OSPF uses TCP, so the protocol number is 6.

OSPF uses UDP, so the protocol number is 17.

OSPF does not use IP.

Incoming label

Outgoing label

Outgoing interface

Use a prefix list on router R1 to discard all ingress IS-IS routes.

Use an export policy and prefix list on router R1.

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

2001:0da8:::0024:0000:4ab9:03

2001:0da8::0024::4ab9:0300

2001:da8::24::4ab9:300

Traffic engineering metric

Maximum bandwidth

Admin Group

RSVP-TE is a routing protocol.

RSVP-TE consults the local RSVP database to determine the path from source to destination.

RSVP-TE generates a TED for storing traffic engineering information.

The inner label is the IPv4 Explicit Null. The outer label is the MPLS transport label,

The inner label is an MPLS transport label. The outer label is the IPv4 Explicit Null.

The inner label is an MPLS transport label. The outer label is the IPv6 Explicit Null.

Exchange

Up

2-Way

The PE routers of the service are responsible for learning MAC addresses.

Flooding ensures that all PEs in a fully-meshed VPLS will learn the source address of all traffic.

MAC learning reduces flooding of frames with previously learned addresses.

Automatic summarization and the use of IP addresses that use any number of bits for the network portion of the address.

Automatic summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

Manual summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

They use shortest path first algorithms, do not exchange copies of routing tables between routers and do maintain knowledge of links on non adjacent routers.

They periodically exchange copies of routing tables between adjacent routers and maintain knowledge of links on non adjacent routers.

They use shortest path first algorithms, exchange copies of routing tables between routers and maintain knowledge of links on non adjacent routers.

The prefix list "reject" should be "192.168.3.0/16 exact".

Router R1 should be configured as an OSPF "asbr".

The policy was not "committed" after creation.

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.

fe80::2416:4dff:fe16:b53d

ff80::2416:4dff:fe 16:b53d

ff80::2616:4dff:fe 16:b53d

fd80::2416:4dff:fe16:b53d

Customer ID and SAP ID.

SAP ID and Service ID.

SDP ID and Service ID.

SDP ID and SAP ID.

SDP ID and VC ID.

10.32.1.2

10.1.4.78

10.1.2.2

Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

Convergence will not be triggered because switches cannot run routing protocols between them.

Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged

Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

It is sent to all nodes on the local link.

It is sent to all nodes on the local network.

It is sent to all nodes that have joined the anycast group.

It is sent to all nodes that are assigned the anycast address.

1

3

4

6

7

Per-platform label space, conservative retention mode

Per-interface label space, conservative retention mode

Per-interface label space, liberal retention mode

It avoids packet loss based on QoS classification.

It automatically selects paths based on traffic congestion.

It always selects the best path based on standard IGP path calculation.

Router R1 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a Type 4 LSA that is flooded to areas 0 and 2.

Type 8 LSA -- Link Local LSA

Type 9 LSA -- Link local Opaque LSA

Type 11 LSA --AS Opaque LSA

ARP mediation.

Maintain a different Routing Information Base for each service.

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

An export policy is not required on PE2 to advertise routes to CE2.

An export policy is not required to advertise routes between PE routers

All of the above statements are false

Static LSPs

Vendor proprietary use

Management LSPs

Dynamic LSPs

Notification

Session

Advertisement

Router R1 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a type 4 LSA that is flooded to areas 0 and 2.