ACSP - Aruba Certified Switching Professional OSPF Routing Configuration Questions and Answers

Question 1

A network administrator configures an ArubaOS-CX switch for OSPF.
The administrator wants to advertise the network associated with interface 1/1/5 into OSPF, but prevent the switch from forming OSPF adjacencies on that interface.
Which command sequence achieves this goal?

Accepted Answer

switch(config)# interface 1/1/5
switch(config-if)# ip ospf passive

Answer

switch(config)# router ospf 1
switch(config-ospf-1)# passive-interface 1/1/5

Answer

switch(config)# router ospf 1
switch(config-ospf-1)# passive-interface default

Answer

switch(config)# interface 1/1/5
switch(config-if)# ip ospf shutdown

Question 2

An ArubaOS-CX switch needs to be configured to participate in OSPF Area 0. Which of the following is the minimum required configuration to establish an OSPF process and assign an interface to Area 0?

Accepted Answer

switch(config)# router ospf 1
switch(config-ospf-1)# router-id 10.1.1.1
switch(config-ospf-1)# area 0
switch(config)# interface 1/1/1
switch(config-if)# ip ospf 1 area 0

Answer

switch(config)# router ospf 1
switch(config-ospf-1)# area backbone
switch(config)# interface 1/1/1
switch(config-if)# ip address 192.168.1.1/24

Answer

switch(config)# enable ospf
switch(config)# interface 1/1/1
switch(config-if)# ospf area 0

Answer

switch(config)# router ospf 1 area 0
switch(config-ospf-1)# network 192.168.1.0/24

Question 3

A network engineer is configuring OSPF on an ArubaOS-CX switch and wants to ensure the router ID is statically set to 10.0.0.1. If the switch has a loopback interface with IP address 172.16.0.1 and a physical interface with IP address 192.168.1.1, which command correctly sets the OSPF router ID?

Accepted Answer

switch(config)# router ospf 1
switch(config-ospf-1)# router-id 10.0.0.1

Answer

switch(config)# ip router-id 10.0.0.1

Answer

switch(config-if)# ospf router-id 10.0.0.1

Answer

switch(config)# ospf process 1
switch(config-ospf-1)# id 10.0.0.1

Question 4

In an OSPF network running on ArubaOS-CX switches, what is the primary purpose of configuring MD5 authentication on an interface?

Accepted Answer

To ensure that routing updates are only accepted from trusted, authorized neighbor routers.

Answer

To encrypt routing updates exchanged between neighbors.

Answer

To prioritize OSPF traffic over other types of network traffic.

Answer

To decrease the time it takes for OSPF neighbors to converge.

Question 5

A network administrator is configuring a multi-area OSPF network on ArubaOS-CX switches. An interface on a switch connects to Area 0.0.0.0. What is the common name for this area?

Accepted Answer

The Backbone Area

Answer

The Stub Area

Answer

The Transit Area

Answer

The Not-So-Stubby Area (NSSA)

Question 6

Which of the following commands would an administrator use on an ArubaOS-CX switch to change the OSPF network type on an interface to support a direct, two-router link efficiently?

Accepted Answer

switch(config-if)# ip ospf network point-to-point

Answer

switch(config-if)# ip ospf network broadcast

Answer

switch(config-if)# ip ospf network non-broadcast

Answer

switch(config-if)# ip ospf network point-to-multipoint