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Q1.  - (Topic 3)

Refer to the graphic.

R1 is unable to establish an OSPF neighbor relationship with R3. What are possible reasons for this problem? (Choose two.)

A. All of the routers need to be configured for backbone Area 1.

B. R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3.

C. A static route has been configured from R1 to R3 and prevents the neighbor adjacency from being established.

D. The hello and dead interval timers are not set to the same values on R1 and R3.

E. EIGRP is also configured on these routers with a lower administrative distance.

F. R1 and R3 are configured in different areas.

Answer: D,F


This question is to examine the conditions for OSPF to create neighborhood.

So as to make the two routers become neighbors, each router must be matched with the following items:

1. The area ID and its types;

2. Hello and failure time interval timer;

3. OSPF Password (Optional).

Q2.  - (Topic 3)

What is a global command?

A. a command that is set once and affects the entire router

B. a command that is implemented in all foreign and domestic IOS versions

C. a command that is universal in application and supports all protocols

D. a command that is available in every release of IOS, regardless of the version or deployment status

E. a command that can be entered in any configuration mode

Answer: A


When you enter global configuration mode and enter a command, it is applied to the running configuration file that is currently running in ram. The configuration of a global command affects the entire router. An example of a global command is one used for the hostname of the router.

Q3.  - (Topic 8)

What is the danger of the permit any entry in a NAT access list?

A. It can lead to overloaded resources on the router.

B. It can cause too many addresses to be assigned to the same interface.

C. It can disable the overload command.

D. It prevents the correct translation of IP addresses on the inside network.

Answer: A

Q4.  - (Topic 6)

When you are troubleshooting an ACL issue on a router, which command would you use to verify which interfaces are affected by the ACL?

A. show ip access-lists

B. show access-lists

C. show interface

D. show ip interface

E. list ip interface

Answer: D


Incorrect Answer

show ip access-lists does not show interfaces affected by an ACL.

Q5.  - (Topic 5)

Refer to the exhibit.

Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?





Answer: B


310 hosts < 512 = 29 -> We need a subnet mask of 9 bits 0 -> 1111 1111.1111 1111.1111

1110.0000 0000 ->

Q6.  - (Topic 5)

What is known as "one-to-nearest" addressing in IPv6?

A. global unicast

B. anycast

C. multicast

D. unspecified address

Answer: B


IPv6 Anycast addresses are used for one-to-nearest communication, meaning an Anycast address is used by a device to send data to one specific recipient (interface) that is the closest out of a group of recipients (interfaces).

Q7.  - (Topic 8)

A router has learned three possible routes that could be used to reach a destination network One route is from EIGRP and has a composite metric of 07104371. Another route is from OSPF with a metric of 782 The last is from RIPv2 and has a metric of 4 Which route or routes will the router install in the routing table?

A. the EIGRP route

B. the OSPF route

C. the RIPv2 route

D. all three routes

E. the OSPF and RIPv2 routes

Answer: A

Q8.  - (Topic 5)

Refer to the exhibit.

What is the cause of the Syslog output messages?

A. The EIGRP neighbor on Fa0/1 went down due to a failed link.

B. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process, causing the adjacency to go down.

C. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go down.

D. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.

Answer: C


The first lines of the message show that a configuration change was made, and that the fa0/1 interface changed to a state of administratively down. This can only be done by issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor adjacency to go down.

Q9.  - (Topic 8)

Which condition does the err-disabled status indicate on an Ethernet interface?

A. There is a duplex mismatch.

B. The device at the other end of the connection is powered off.

C. The serial interface is disabled.

D. The interface is configured with the shutdown command.

E. Port security has disabled the interface.

F. The interface is fully functioning.

Answer: E

Q10.  - (Topic 3)

Refer to the exhibit.

What commands must be configured on the 2950 switch and the router to allow communication between host 1 and host 2? (Choose two.)

A. Router(config)# interface fastethernet 0/0 Router(config-if)# ip address Router(config-if)# no shut down

B. Router(config)# interface fastethernet 0/0 Router(config-if)# no shut down Router(config)# interface fastethernet 0/0.1 Router(config-subif)# encapsulation dot1q 10

Router(config-subif)# ip address Router(config)# interface fastethernet 0/0.2

Router(config-subif)# encapsulation dot1q 20

Router(config-subif)# ip address

C. Router(config)# router eigrp 100 Router(config-router)# network

Router(config-router)# network

D. Switch1(config)# vlan database Switch1(config-vlan)# vtp domain XYZ

Switch1(config-vlan)# vtp server

E. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk

F. Switch1(config)# interface vlan 1 Switch1(config-if)# ip default-gateway

Answer: B,E


The router will need to use subinterfaces, where each subinterface is assigned a VLAN and IP address for each VLAN. On the switch, the connection to the router need to be configured as a trunk using the switchport mode trunk command and it will need a default gateway for VLAN 1.