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2017 Mar 200-125 brain dumps

Q131.  - (Topic 8)

Which three circumstances can cause a GRE tunnel to be in an up/down state? (Choose three.)

A. The tunnel interface IP address is misconfigured.

B. The tunnel interface is down.

C. A valid route to the destination address is missing from the routing table.

D. The tunnel address is routed through the tunnel itself.

E. The ISP is blocking the traffic.

F. An ACL is blocking the outbound traffic.

Answer: B,C,D


Q132.  - (Topic 8)

Which configuration can you apply to enable encapsulation on a subinterface?

A. interface FastEthernet 0/0 encapsulation dot1Q 30

ip address 10.1.1.30 255.255.255.0

B. interface FastEthernet 0/0.30

ip address 10.1.1.30 255.255.255.0

C. interface FastEthernet 0/0.30 description subinterface vlan 30

D. interface FastEthernet 0/0.30 encapsulation dot1Q 30

ip address 10.1.1.30 255.255.255.0

Answer: D


Q133.  - (Topic 8)

when you troubleshoot an IPv4 connectivity issue on a router, which three router configuration checks you must perform?

A. Verify that the router interface IP address IP address is correct.

B. Verify that the DNS is configured correctly.

C. Verify that the router and the host use the same subnet mask.

D. Verify that the router firmware is up-to-date.

E. Verify that a default route is configured.

F. Verify that the route appears in the routing table

Answer: A,B,F


Q134.  - (Topic 8)

In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.)

A. Unlike IPv4 headers, IPv6 headers have a fixed length.

B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.

C. IPv6 headers eliminate the IPv4 Checksum field.

D. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.

E. IPv6 headers use a smaller Option field size than IPv4 headers.

F. IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field.

Answer: A,B,C


Q135.  - (Topic 7)

Scenario

Refer to the topology. Your company has connected the routers R1, R2, and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the routers R4 and R5.

The EIGRP routing protocol is configured.

You are required to troubleshoot and resolve the EIGRP issues between the various routers.

Use the appropriate show commands to troubleshoot the issues.

Router R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the cause for this misconfiguration?

A. The K values mismatch.

B. The AS does not match.

C. The network command is missing.

D. The passive interface command is enabled.

Answer: C

Explanation:

The link from R1 to R6 is shown below:

As you can see, they are both using e0/0. The IP addresses are in the 192.168.16.0 network:

But when we look at the EIGRP configuration, the “network 192.168.16.0” command is missing on R6.


Replace 200-125 book:

Q136. DRAG DROP - (Topic 4)

Drag the Frame Relay acronym on the left to match its definition on the right. (Not all acronyms are used.)

Answer:


Q137.  - (Topic 3)

Which command would you use on a Cisco router to verify the Layer 3 path to a host?

A. tracert address

B. traceroute address

C. telnet address

D. ssh address

Answer: B

Explanation:

In computing, traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop indicates the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated. Ping, on the other hand, only computes the final round-trip times from the destination point.


Q138.  - (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


Q139.  - (Topic 8)

Why is the Branch2 network 10.1 0.20.0/24 unable to communicate with the Server farm1 network 10.1 0.10.0/24 over the GRE tunnel?

A. The GRE tunnel destination is not configured on the R2 router.

B. The GRE tunnel destination is not configured on the Branch2 router.

C. The static route points to the tunnel0 interface that is misconfigured on the Branch2 router.

D. The static route points to the tunnel0 interface that is misconfigured on the R2 router.

Answer: C


Q140.  - (Topic 4)

It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit. Which of the following procedures are required to accomplish this task? (Choose three.)

A. Remove the IP address from the physical interface.

B. Encapsulate the physical interface with multipoint PPP.

C. Create the virtual interfaces with the interface command.

D. Configure each subinterface with its own IP address.

E. Disable split horizon to prevent routing loops between the subinterface networks.

F. Configure static Frame Relay map entries for each subinterface network.

Answer: A,C,D

Explanation:

For multiple PVC’s on a single interface, you must use subinterfaces, with each subinterface configured for each PVC. Each subinterface will then have its own IP address, and no IP address will be assigned to the main interface.