Question 1

Which Cisco IOS command is used to enable OSPF on an interface using interface configuration mode commands?

Accepted Answer

A)  ip ospf area 
B)  ospf process-id area area 
C)  ip ospf process-id area area 
D)  ospf area area 
A)  ip ospf area 
B)  ospf process-id area area 
C)  ip ospf process-id area area 
D)  ospf area area C

Question 2

An engineer would like to set the cost of an OSPF interface directly on her router. Which interface subcommand allows the engineer to set the cost directly?

Accepted Answer

A)  cost ospf x 
B)  cost x ip ospf 
C)  modify cost ospf x 
D)  ip ospf cost x 
A)  cost ospf x 
B)  cost x ip ospf 
C)  modify cost ospf x 
D)  ip ospf cost x D

Question 3

Refer to the figure. Assuming what is shown is the extent of the OSPF configuration on a device, what is the RID of the local OSPF process?

Accepted Answer

A)  10.10.10.1 
B)  172.16.1.2 
C)  172.16.1.1 
D)  172.16.0.1 
A)  10.10.10.1 
B)  172.16.1.2 
C)  172.16.1.1 
D)  172.16.0.1 B

Question 4

When viewing the Cisco IOS routing table with the show ip route command, what code is used to denote OSPF routes that are not within the local area?

Accepted Answer

A)  E2 
B)  IA 
C)  E1 
D)  E 
A)  E2 
B)  IA 
C)  E1 
D)  E

Question 5

By default, what is the maximum number of equal-cost OSPF routes that will be inserted into the routing table?

Accepted Answer

A)  4 
B)  6 
C)  1 
D)  2 
A)  4 
B)  6 
C)  1 
D)  2

Question 6

Which Cisco IOS commands can be used to display the interfaces that have been enabled into the local OSPF process?

Accepted Answer

A)  show ip ospf interface brief 
B)  show ip ospf 
C)  show ip ospf enabled 
D)  show ip ospf interface 
A)  show ip ospf interface brief 
B)  show ip ospf 
C)  show ip ospf enabled 
D)  show ip ospf interface

Question 7

Which Cisco IOS command is used to prevent a configured OSPF interface from forming a neighborship with any potential neighbors?

Accepted Answer

A)  passive-interface interface 
B)  ip ospf process-id passive 
C)  ip ospf process-id no-advertise 
D)  advertise interface disable 
A)  passive-interface interface 
B)  ip ospf process-id passive 
C)  ip ospf process-id no-advertise 
D)  advertise interface disable

Question 8

Which single OSPF network statement will correctly include all the interfaces on a device whose IP addresses only begin with a 10.10.8, 10.10.9, 10.10.10, or 10.10.11?

Accepted Answer

A)  network 10.10.8.0 0.0.7.255 area 0 
B)  network 10.10.0.0 0.0.0.255 area 0 
C)  network 10.10.8.0 0.0.3.255 area 0 
D)  network 10.10.0.0 0.0.7.255 area 0 
A)  network 10.10.8.0 0.0.7.255 area 0 
B)  network 10.10.0.0 0.0.0.255 area 0 
C)  network 10.10.8.0 0.0.3.255 area 0 
D)  network 10.10.0.0 0.0.7.255 area 0

Question 9

Which Cisco IOS command can be used to display whether an interface is configured as passive?

Accepted Answer

A)  show ip ospf interface passive 
B)  show ip ospf interface brief 
C)  show ip ospf interface 
D)  show ip ospf passive 
A)  show ip ospf interface passive 
B)  show ip ospf interface brief 
C)  show ip ospf interface 
D)  show ip ospf passive

Question 10

Which Cisco IOS command is used to advertise a default route into OSPF regardless of whether a default static route is configured?

Accepted Answer

A)  ospf default-route advertise always 
B)  ospf advertise default-route permanent 
C)  default-information originate 
D)  default-information originate always 
A)  ospf default-route advertise always 
B)  ospf advertise default-route permanent 
C)  default-information originate 
D)  default-information originate always

Question 11

Which Cisco IOS command lists a group of messages for each IPv4 routing protocol running on a router?

Accepted Answer

A)  show ip routing 
B)  show ip protocols 
C)  show ip configuration 
D)  show ip route configuration 
A)  show ip routing 
B)  show ip protocols 
C)  show ip configuration 
D)  show ip route configuration

Question 12

Which Cisco IOS command is used to alter the default behavior and configure all interfaces as passive?

Accepted Answer

A)  passive-interface default disable 
B)  passive-interface default 
C)  ip routing passive enable 
D)  ip routing passive-interface 
A)  passive-interface default disable 
B)  passive-interface default 
C)  ip routing passive enable 
D)  ip routing passive-interface

Question 13

What default reference bandwidth does OSPF use when calculating the metric?

Accepted Answer

A)  10 Mbps 
B)  1 Gbps 
C)  100 Mbps 
D)  100 Gbps 
A)  10 Mbps 
B)  1 Gbps 
C)  100 Mbps 
D)  100 Gbps

Question 14

Which OSPF network statement will correctly include all the interfaces on a device that begin with an IP address of 172.16.0.0/16?

Accepted Answer

A)  network 0.0.16.172 255.255.0.0 area 0 
B)  network 172.16.0.0 0.0.255.255 area 0 
C)  network 172.16.0.0 255.255.0.0 area 0 
D)  network 0.0.16.172 0.0.255.255 area 0 
A)  network 0.0.16.172 255.255.0.0 area 0 
B)  network 172.16.0.0 0.0.255.255 area 0 
C)  network 172.16.0.0 255.255.0.0 area 0 
D)  network 0.0.16.172 0.0.255.255 area 0

Question 15

An engineer used the Cisco IOS show ip ospf neighbor command and received the following output:

$\begin{array}{lclccl} 
\text {Neighbor ID }&\text { Pri} &\text { State} &\text { Dead Time }&\text { Address} &\text { Interface} \
3.3.3.3 & 1 &\text { FULL/DR }& 00: 00: 37  & 10.1 .13 .3 &\text { GigabitEthernet0/1/0 }\
4.4.4.4 & 1 & \text {FULL/BDR} & 00: 00: 34  & 10.1 .14 .4 & \text {GigabitEthernet0/2/0}
\end{array}$

What does the state field tell us about the router with the Neighbor ID 4.4.4.4?

Accepted Answer

A)  The neighbor state is full, and the neighbor is neither the designated router or backup designated router. 
B)  The neighbor state is full, and the neighbor is the backup designated router. 
C)  The neighbor state is full, and the neighbor is the designated router. 
D)  The neighbor state is 2-way, and the neighbor is neither the designated router or the backup designated router. 
A)  The neighbor state is full, and the neighbor is neither the designated router or backup designated router. 
B)  The neighbor state is full, and the neighbor is the backup designated router. 
C)  The neighbor state is full, and the neighbor is the designated router. 
D)  The neighbor state is 2-way, and the neighbor is neither the designated router or the backup designated router.

Question 16

An engineer would like to remove the network commands in OSFP configuration mode. What Cisco IOS command does this engineer need to use?

Accepted Answer

A)  no network network-id area area-id 
B)  remove network network-id area area-id 
C)  disable network network-id area area-id 
D)  stop network network-id area area-id 
A)  no network network-id area area-id 
B)  remove network network-id area area-id 
C)  disable network network-id area area-id 
D)  stop network network-id area area-id

Question 17

Which Cisco IOS command is used to alter the maximum number of equal-cost OSPF routes that are inserted into the routing table?

Accepted Answer

A)  ospf-paths max 
B)  maximum-paths max 
C)  ospf maximum-paths max 
D)  ospf load-balance max 
A)  ospf-paths max 
B)  maximum-paths max 
C)  ospf maximum-paths max 
D)  ospf load-balance max

Question 18

Which Cisco IOS command is used to configure the OSPF reference bandwidth setting?

Accepted Answer

A)  ospf reference-bandwidth speed 
B)  reference-bandwidth speed 
C)  ip ospf reference bandwidth speed 
D)  auto-cost reference-bandwidth speed 
A)  ospf reference-bandwidth speed 
B)  reference-bandwidth speed 
C)  ip ospf reference bandwidth speed 
D)  auto-cost reference-bandwidth speed

Question 19

An engineer needs to ensure that a specific OSPF interface is not set to passive. Which Cisco IOS command could this engineer use to change the configuration for the interface?

Accepted Answer

A)  disable passive interface 
B)  no passive-interface type number 
C)  passive-interface no type number 
D)  config interface passive disable 
A)  disable passive interface 
B)  no passive-interface type number 
C)  passive-interface no type number 
D)  config interface passive disable

Exam 20: Implementing OSPF

Which Cisco IOS command is used to enable OSPF on an interface using interface configuration mode commands?

An engineer would like to set the cost of an OSPF interface directly on her router. Which interface subcommand allows the engineer to set the cost directly?

Refer to the figure. Assuming what is shown is the extent of the OSPF configuration on a device, what is the RID of the local OSPF process?

When viewing the Cisco IOS routing table with the show ip route command, what code is used to denote OSPF routes that are not within the local area?

By default, what is the maximum number of equal-cost OSPF routes that will be inserted into the routing table?

Which Cisco IOS commands can be used to display the interfaces that have been enabled into the local OSPF process?

Which Cisco IOS command is used to prevent a configured OSPF interface from forming a neighborship with any potential neighbors?

Which single OSPF network statement will correctly include all the interfaces on a device whose IP addresses only begin with a 10.10.8, 10.10.9, 10.10.10, or 10.10.11?

Which Cisco IOS command can be used to display whether an interface is configured as passive?

Which Cisco IOS command is used to advertise a default route into OSPF regardless of whether a default static route is configured?

Which Cisco IOS command lists a group of messages for each IPv4 routing protocol running on a router?

Which Cisco IOS command is used to alter the default behavior and configure all interfaces as passive?

What default reference bandwidth does OSPF use when calculating the metric?

Which OSPF network statement will correctly include all the interfaces on a device that begin with an IP address of 172.16.0.0/16?

An engineer would like to remove the network commands in OSFP configuration mode. What Cisco IOS command does this engineer need to use?

Which Cisco IOS command is used to alter the maximum number of equal-cost OSPF routes that are inserted into the routing table?

Which Cisco IOS command is used to configure the OSPF reference bandwidth setting?

An engineer needs to ensure that a specific OSPF interface is not set to passive. Which Cisco IOS command could this engineer use to change the configuration for the interface?

Introduction to TCP/IP Networking

Fundamentals of Ethernet Lans

Fundamentals of Wans and IP Routing

Using the Command-Line Interface

Analyzing Ethernet Lan Switching

Configuring Basic Switch Management

Configuring and Verifying Switch Interfaces

Implementing Ethernet Virtual Lans

Spanning Tree Protocol Concepts

RSTP and Etherchannel Configuration

Perspectives on IPV4 Subnetting

Analyzing Classful IPV4 Networks

Analyzing Subnet Masks

Analyzing Existing Subnets

Operating Cisco Routers

Configuring IPV4 Addresses and Static Routes

IP Routing in the Lan

Troubleshooting IPV4 Routing

Understanding OSPF Concepts

OSPF Network Types and Neighbors

Fundamentals of IP Version 6

Ipv6 Addressing and Subnetting

Implementing IPV6 Addressing on Routers

Implementing IPV6 Routing

Fundamentals of Wireless Networks

Analyzing Cisco Wireless Architectures

Securing Wireless Networks

Building a Wireless Lan

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