Pearson Test Prep - Practice Exam

16 important questions on Pearson Test Prep - Practice Exam

What 4 steps do you take to configure a CoPP policy?

1. Define a Class map
Which contains the Match parameters

2. Define a Policy map
Where you connect the Class map to

3. Go into Control-Plane configuration mode

4. Apply the Policy Map as a QoS policy (Service-Policy Input policy-map-name)

What is the order in which OSPFv2 LFA FRR (Loop-Free Alternate Fast ReRoute) attributes are considered

From high to low:
1. Srlg
2. Primary-path
3. Interface-disjoint
4. Lowest-metric
5. Linecard-disjoint
6. Node-protecting
7. Broadcast-interface-disjoint
8. Load-sharing

What is the default behavior of LDP for directly connected routes?

Advertise implicit null labels
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What protocol is used by LDP and TDP?

Both use UDP for Hello messages.

However, they both use TCP for Label Binding Information.

LDP uses port 646
TDP uses port 711

What settings can be modified on a Cisco DNA Center Appliance using the command: sudo maglev-config update

1. Host IP address
2. DNS Server IP address
3. Default Gateway IP Address
4. NTP IP address
5. Cluster Virtual IP Address
6. Static Route Configurations
7. Proxy Server IP address
8. Maglev user password
9. Admin user password

What is needed to support MPLS LDP Autoconfiguration?

Either OSPF or IS-IS needs to be configured to support MPLS LDP Autoconfiguration.

On a DMVPN Spoke Router, how is the NBMA to Tunnel address mapping and next hop server configured?

In IOS 12.2 through 12.4 you need to use 2 command:
ip nhrp map {hub-tunnel-ip} nbma {hub-nbma-ip}
ip nhrp nhs {hub-tunnel-ip}

In later versions commands are combined:
ip nhrp nhs {hub-tunnel-ip} nbma {hub-nbma-ip}

What is Split Horizon and why is it important for DMVPN Hub routers?

Split Horizon prevents routers from advertising a route through the same interface from which they learned the route.

It is enabled by default.

Disabling for RIP:
no ip split horizon
In tunnel interface configuration context

Disabling for EIGRP:
no ip split horizon eigrp {as-number}

What does the Default-Information Originate command do on an OSPF router?

It does 2 things:
1. It injects the router's default route into OSPF

2. The router will become an OSPF ASBR

When a Route Distinguisher is configured in VRF-lite, what does the RD number mean?

It is an ASN or IP address with an arbitrary number, seperated by a colon.

RD 100:1  means ASN 100 and the 1 is arbitrary

When using the Area id Range command on an ABR a Discard route to Null0 is created, much like with the Summary-address command.
What is the difference?

The Area id Range command creates a Null0 route with AD of 110

The Summary-address command creates a Null0 route with AD of 254

In BGP what happens when a router receives more prefixes from a neighbor than the configured number in the Neighbor ip-address Maximum-Prefix number command

It shuts down the BGP session with the status PfxCt

What difference is important to note about EIGRP versus EIGRPv6 neighborship?

In EIGRP the following values must match:
K Values
Subnet

In EIGRPv6 the following values must match:
K Values
AS Number

What are the 3 steps to enable OSPFv3 to function on an interface

1. Use IPv6 Unicast-routing command in global config mode

2. Use either IPv6 address OR IPv6 Enable command in interface config mode

3. Use IPv6 OSPF process-id Area area-id [Instance instance-id] command in interface config mode

What does Weighted Random Early Detection (WRED) address?

It is a congestion avoidance mechanism that addresses packet loss caused by tail drop.

What is the correct Debug command to get debug messages for CEF actions related to interfaces?

Debug CEF Interface

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