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Product Description:
Exam Number/Code: 200-125
Exam name: CCNA Cisco Certified Network Associate CCNA (v3.0)
n questions with full explanations
Certification: Cisco Certification

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Examcollection offers free demo for ccna routing and switching 200 125 pdf exam. "CCNA Cisco Certified Network Associate CCNA (v3.0)", also known as cisco ccna 200 125 exam, is a Cisco Certification. This set of posts, Passing the Cisco ccna 200 125 study guide exam, will help you answer those questions. The cisco 200 125 Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco 200 125 ccna pdf exams and revised by experts!

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New Cisco 200-125 Exam Dumps Collection (Question 6 - Question 15)

New Questions 6

Refer to the exhibit.

When running OSPF, what would cause router A not to form an adjacency with router B?

A. The loopback addresses are on different subnets.

B. The values of the dead timers on the routers are different.

C. Route summarization is enabled on both routers.

D. The process identifier on router A is different than the process identifier on router B.

Answer: B


To form an adjacency (become neighbor), router A & B must have the same Hello interval, Dead interval and AREA numbers

New Questions 7

Which command is used to enable CHAP authentication, with PAP as the fallback method, on a serial interface?

A. Router(config-if)# ppp authentication chap fallback ppp

B. Router(config-if)# ppp authentication chap pap

C. Router(config-if)# authentication ppp chap fallback ppp

D. Router(config-if)# authentication ppp chap pap

Answer: B


This command tells the router first to use CHAP and then go to PAP if CHAP isn't available.

New Questions 8

Refer to the topology shown in the exhibit.

Which three ports will be STP designated ports if all the links are operating at the same bandwidth? (Choose three.)

A. Switch A - Fa0/0

B. Switch A - Fa0/1

C. Switch B - Fa0/0

D. Switch B - Fa0/1

E. Switch C - Fa0/0

F. Switch C - Fa0/1

Answer: B,C,D


This question is to check the spanning tree election problem.

1. First, select the root bridge, which can be accomplished by comparing the bridge ID, the smallest will be selected. Bridge-id= bridge priority + MAC address. The three switches in the figure all have the default priority, so we should compare the MAC address, it is easy to find that SwitchB is the root bridge.

2. Select the root port on the non-root bridge, which can be completed through comparing root path cost. The smallest will be selected as the root port.

3. Next, select the Designated Port. First, compare the path cost, if the costs happen to be the same, then compare the BID, still the smallest will be selected. Each link has a DP. Based on the exhibit above, we can find DP on each link. The DP on the link between SwitchA and SwitchC is SwitchA'Fa0/1, because it has the smallest MAC address.

Topic 7, Routing Technologies

664.A router receives information about network from multiple sources. What will the router consider the most reliable information about the path to that network?

A. a directly connected interface with an address of

B. a static route to network

C. a RIP update for network

D. an OSPF update for network

E. a default route with a next hop address of

F. a static route to network with a local serial interface configured as the next hop

New Questions 9

Refer to the exhibit.

The network administrator normally establishes a Telnet session with the switch from host

A. However, host A is unavailable. The administrator's attempt to telnet to the switch from host B fails, but pings to the other two hosts are successful. What is the issue?

A. Host B and the switch need to be in the same subnet.

B. The switch interface connected to the router is down.

C. Host B needs to be assigned an IP address in VLAN 1.

D. The switch needs an appropriate default gateway assigned.

E. The switch interfaces need the appropriate IP addresses assigned.

Answer: D


Ping was successful form host B to other hosts because of intervlan routing configured on router. But to manage switch via telnet the VLAN32 on the switch needs to be configured interface vlan32 along with ip address and its appropriate default-gateway address.

Since VLAN1 interface is already configure on switch Host A was able to telnet switch.

New Questions 10

Refer to the exhibit.

Which two statements are true of the interfaces on Switch1? (Choose two.)

A. Multiple devices are connected directly to FastEthernet0/1.

B. A hub is connected directly to FastEthernet0/5.

C. FastEthernet0/1 is connected to a host with multiple network interface cards.

D. FastEthernet0/5 has statically assigned MAC addresses.

E. FastEthernet0/1 is configured as a trunk link.

F. Interface FastEthernet0/2 has been disabled.

Answer: B,E


Carefully observe the information given after command show. Fa0/1 is connected to Switch2, seven MAC addresses correspond to Fa0/1, and these MAC are in different VLAN. From this we know that Fa0/1 is the trunk interface.

From the information given by show cdp neighbors we find that there is no Fa0/5 in CDP neighbor. However, F0/5 corresponds to two MAC addresses in the same VLAN. Thus we know that Fa0/5 is connected to a Hub.

Based on the output shown, there are multiple MAC addresses from different VLANs attached to the FastEthernet 0/1 interface. Only trunks are able to pass information from devices in multiple VLANs.

New Questions 11

Refer to the exhibit.

For what two reasons has the router loaded its IOS image from the location that is shown? (Choose two.)

A. Router1 has specific boot system commands that instruct it to load IOS from a TFTP server.

B. Router1 is acting as a TFTP server for other routers.

C. Router1 cannot locate a valid IOS image in flash memory.

D. Router1 defaulted to ROMMON mode and loaded the IOS image from a TFTP server.

E. Cisco routers will first attempt to load an image from TFTP for management purposes.

Answer: A,C


The loading sequence of CISCO IOS is as follows: Booting up the router and locating the Cisco IOS

1. POST (power on self-test)

2. Bootstrap code executed

3. Check Configuration Register value (NVRAM) which can be modified using the config- register command

0 = ROM Monitor mode 1 = ROM IOS

2 - 15 = startup-config in NVRAM

4. Startup-config filE. Check for boot system commands (NVRAM)

If boot system commands in startup-config

a. Run boot system commands in order they appear in startup-config to locate the IOS

b. [If boot system commands fail, use default fallback sequence to locate the IOS (Flash, TFTP, ROM)?]

If no boot system commands in startup-config use the default fallback sequence in locating the IOS:

a. Flash (sequential)

b. TFTP server (netboot)

c. ROM (partial IOS) or keep retrying TFTP depending upon router model

5. If IOS is loaded, but there is no startup-config file, the router will use the default fallback sequence for locating the IOS and then it will enter setup mode or the setup dialogue.

New Questions 12

Refer to the exhibit.

A frame on VLAN 1 on switch S1 is sent to switch S2 where the frame is received on VLAN 2. What causes this behavior?

A. trunk mode mismatches

B. allowing only VLAN 2 on the destination

C. native VLAN mismatches

D. VLANs that do not correspond to a unique IP subnet

Answer: C


Untagged frames are encapsulated with the native VLAN. In this case, the native VLANs are different so although S1 will tag it as VLAN 1 it will be received by S2.

New Questions 13

Refer to the exhibit.

A technician is troubleshooting host connectivity issues on the switches. The hosts in VLANs 10 and 15 on Sw11 are unable to communicate with hosts in the same VLANs on Sw12. Hosts in the Admin VLAN are able to communicate. The port-to-VLAN assignments are identical on the two switches. What could be the problem?

A. The Fa0/1 port is not operational on one of the switches.

B. The link connecting the switches has not been configured as a trunk.

C. At least one port needs to be configured in VLAN 1 for VLANs 10 and 15 to be able to communicate.

D. Port FastEthernet 0/1 needs to be configured as an access link on both switches.

E. A router is required for hosts on SW11 in VLANs 10 and 15 to communicate with hosts in the same VLAN on Sw12.

Answer: B


In order for hosts in the same VLAN to communicate with each other over multiple switches, those switches need to be configured as trunks on their connected interfaces so that they can pass traffic from multiple VLANs.

New Questions 14

Which two are advantages of static routing when compared to dynamic routing? (Choose two.)

A. Configuration complexity decreases as network size increases.

B. Security increases because only the network administrator may change the routing table.

C. Route summarization is computed automatically by the router.

D. Routing tables adapt automatically to topology changes.

E. An efficient algorithm is used to build routing tables, using automatic updates.

F. Routing updates are automatically sent to neighbors.

G. Routing traffic load is reduced when used in stub network links.

Answer: B,G


Since static routing is a manual process, it can be argued that it is more secure (and more prone to human errors) since the network administrator will need to make changes to the routing table directly. Also, in stub networks where there is only a single uplink connection, the load is reduced as stub routers just need a single static default route, instead of many routes that all have the same next hop IP address.

New Questions 15

What is the result of issuing the frame-relay map ip 202 broadcast command?

A. defines the destination IP address that is used in all broadcast packets on DCLI 202

B. defines the source IP address that is used in all broadcast packets on DCLI 202

C. defines the DLCI on which packets from the IP address are received

D. defines the DLCI that is used for all packets that are sent to the IP address

Answer: D


This command identifies the DLCI that should be used for all packets destined to the address. In this case, DLCI 202 should be used.

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