CCNA 3 Chapter 1 V6.0 Answers

1. A network administrator is planning redundant devices and cabling in a switched network to support high availability. Which benefit will implementing the Spanning Tree Protocol provide to this design?

Faster convergence is available for advanced routing protocols.

Multiple physical interfaces can be combined into a single EtherChannel interface.

Redundant paths can be available without causing logical Layer 2 loops.

Network access can be expanded to support both wired and wireless devices.

 

2. Refer to the exhibit. Which devices exist in the failure domain when switch S3 loses power?

Which devices exist in the failure domain when switch S3 loses power?

PC_3 and AP_2

PC_3 and PC_2

S4 and PC_2

AP_2 and AP_1

S1 and S4

CCNA 3 Final Exam V6.0 Answers

1. A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?

61440

34816

28672

1

32768

 

2. Match each OSPF router type description with its name. (Not all options are used.)

Match each OSPF router type description with its name

- Internal routers:

Routers that have all their interfaces in the same area and have identical LSDBs.

- Area border routers:

All the routers of this type maintain separate LSDBs for each area to which they connect.

- Autonomous System Boundary Routers:

Routers that have at least one interface attached to an external internetwork (another autonomous system), such as a non-OSPF network.

CCNA 3 Chapter 10 V6.0 Answers

1. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Which routers are the DR and BDR in this topology?

DR:R1 BDR:R2

DR:R4 BDR:R1

DR:R6 BDR:R5

DR:R5 BDR:R3

DR:R3 BDR:R5

DR:R3 BDR:R6

 

2. A network engineer has manually configured the hello interval to 15 seconds on an interface of a router that is running OSPFv2. By default, how will the dead interval on the interface be affected?

The dead interval will now be 30 seconds.

The dead interval will now be 15 seconds.

The dead interval will now be 60 seconds.

The dead interval will not change from the default value.

CCNA 3 Chapter 9 V6.0 Answers

1. What are two reasons for creating an OSPF network with multiple areas? (Choose two.)

to provide areas in the network for routers that are not running OSPF

to ensure that an area is used to connect the network to the Internet

to reduce SPF calculations

to reduce use of memory and processor resources

to simplify configuration

 

2. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Fill in the blank. Do not use abbreviations.

What is the missing command on router R2 to establish an adjacency between routers R1 and R3?

Network 172.16.10.0 0.0.0.255 area 0

CCNA 3 Chapter 8 V6.0 Answers

1. What happens immediately after two OSPF routers have exchanged hello packets and have formed a neighbor adjacency?

They exchange DBD packets in order to advertise parameters such as hello and dead intervals.

They negotiate the election process if they are on a multiaccess network.

They request more information about their databases.

They exchange abbreviated lists of their LSDBs.

 

2. What is used to create the OSPF neighbor table?

link-state database

adjacency database

routing table

forwarding database

CCNA 3 Chapter 7 V6.0 Answers

1. In which scenario will the use of EIGRP automatic summarization cause inconsistent routing in a network?

when there is no adjacency that is established between neighboring routers

when the routers in an IPv4 network have mismatching EIGRP AS numbers

when there is no common subnet that exists between neighboring routers

when the routers in an IPv4 network are connected to discontiguous networks with automatic summarization enabled

 

2. Refer to the exhibit. An administrator wants EIGRP on Router1 to load balance traffic to network 2001:db8:11:10::/64 across two interfaces. Currently traffic is using only interface GigabitEthernet0/1. A second route, not in the routing table, is available with a metric of 264000. What value is needed in the variance command to make EIGRP put the second route into the routing table?

Currently traffic is using only interface GigabitEthernet0/1

11

4

1

10

CCNA 3 Chapter 6 V6.0 Answers

1. Order the precedence in which an EIGRP router would choose the router ID. (Not all options are used.)

Order the precedence in which an EIGRP router would choose the router ID

eigrp router-id command = first

highest IPv4 address on active physical interfaces = third

highest IPv4 address on loopback interfaces = second

 

2. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Which code is displayed on the web server?

Done

IPv6EIGRP

Complete

EIGRP

CCNA 3 Chapter 5 V6.0 Answers

1. What is maintained within an EIGRP topology table?

the hop count to all networks

all routes received from neighbors

the state of all links on the network

the area ID of all neighbors

 

2. After a network topology change occurs, which distance vector routing protocol can send an update message directly to a single neighboring router without unnecessarily notifying other routers?

EIGRP

RIPv1

OSPF

RIPv2

IS-IS

CCNA 3 Chapter 4 V6.0 Answers

1. Fill in the blank.

In FHRP operation, two or more routers are represented as a single _virtual_ router.

 

2. A network administrator would like to ensure that router R1 is always elected the active router for an HSRP group. Which set of commands would ensure the required results?

R1(config-if)# ip address 192.168.1.100 255.255.255.0

R1(config-if)# standby 1 ip 192.168.1.1

R1(config-if)# standby 1 priority 255

R1(config-if)# standby 1 preempt

R1(config-if)# no shutdown

 

R1(config-if)# ip address 192.168.1.250 255.255.255.0

R1(config-if)# standby 1 ip 192.168.1.1

R1(config-if)# no shutdown

 

R1(config-if)# ip address 192.168.1.100 255.255.255.0

R1(config-if)# standby 1 ip 192.168.1.1

R1(config-if)# standby 1 priority 150

R1(config-if)# no shutdown

 

R1(config-if)# ip address 192.168.1.100 255.255.255.0

R1(config-if)# standby 1 ip 192.168.1.1

R1(config-if)# standby 1 priority 1

R1(config-if)# no shutdown

CCNA 3 Chapter 3 V6.0 Answers

1. A network administrator is preparing the implementation of Rapid PVST+ on a production network. How are the Rapid PVST+ link types determined on the switch interfaces?

Link types can only be determined if PortFast has been configured.

Link types are determined automatically.

Link types can only be configured on access ports configured with a single VLAN.

Link types must be configured with specific port configuration commands.

 

2. Which spanning tree standard supports only one root bridge so that traffic from all VLANs flows over the same path?

802.1D

PVST+

MST

Rapid PVST