Actualtests offers free demo for ccna 200 120 vs 200 125 exam. "CCNA Cisco Certified Network Associate CCNA (v3.0)", also known as ccna 200 125 ebook exam, is a Cisco Certification. This set of posts, Passing the Cisco cisco ccna 200 125 exam, will help you answer those questions. The ccna 200 125 dumps Questions & Answers covers all the knowledge points of the real exam. 100% real Cisco ccna 200 125 ebook exams and revised by experts!


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

Question No: 6

What Netflow component can be applied to an interface to track IPv4 traffic?

A. flow monitor

B. flow record

C. flow sampler

D. flow exporter

Answer: A

Explanation:

Flow monitors are the Flexible NetFlow component that is applied to interfaces to perform network traffic monitoring. Flow monitors consist of a record and a cache. You add the record to the flow monitor after you create the flow monitor. The flow monitor cache is automatically created at the time the flow monitor is applied to the first interface. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record, which is configured for the flow monitor and stored in the flow monitor cache.

For example, the following example creates a flow monitor named FLOW-MONITOR-1 and enters Flexible NetFlow flow monitor configuration mode:

Router(config)# flow monitor FLOW-MONITOR-1 Router(config-flow-monitor)#


Question No: 7

Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose three.)

A. ping

B. tracert

C. ipconfig

D. show ip route

E. winipcfg

F. show interfaces

Answer: A,D,F

Explanation:

Ping, show ip route, and show interfaces are all valid troubleshooting IOS commands. Tracert, ipconfig, and winipcfg are PC commands, not IOS.


Question No: 8

What will be the result if the following configuration commands are implemented on a Cisco switch?

Switch(config-if)# switchport port-security

Switch(config-if)# switchport port-security mac-address sticky

A. A dynamically learned MAC address is saved in the startup-configuration file.

B. A dynamically learned MAC address is saved in the running-configuration file.

C. A dynamically learned MAC address is saved in the VLAN database.

D. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.

E. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.

Answer: B

Explanation:

In the interface configuration mode, the command switchport port-security mac-address sticky enables sticky learning. When entering this command, the interface converts all the dynamic secure MAC addresses to sticky secure MAC addresses.


Question No: 9

CORRECT TEXTA network associate is adding security to the configuration of the Corp1 router. The user on host C should be able to use a web browser to access financial information from the Finance Web Server. No other hosts from the LAN nor the Core should be able to use a web browser to access this server. Since there are multiple resources for the corporation at this location including other resources on the Finance Web Server, all other traffic should be allowed.

The task is to create and apply an access-list with no more than three statements that will allow ONLY host C web access to the Finance Web Server. No other hosts will have web access to the Finance Web Server. All other traffic is permitted.

Access to the router CLI can be gained by clicking on the appropriate host. All passwords have been temporarily set to "cisco".

The Core connection uses an IP address of 198.18.196.65.

The computers in the Hosts LAN have been assigned addresses of 192.168.33.1 - 192.168.33.254

u2711 host A 192.168.33.1

u2711 host B 192.168.33.2

u2711 host C 192.168.33.3

u2711 host D 192.168.33.4

The servers in the Server LAN have been assigned addresses of 172.22.242.17 - 172.22.242.30.

The Finance Web Server is assigned an IP address of 172.22.242.23.

Answer:

Select the console on Corp1 router Configuring ACL

Corp1>enable Corp1#configure terminal

comment: To permit only Host C (192.168.33.3){source addr} to access finance server address (172.22.242.23) {destination addr} on port number 80 (web) Corp1(config)#access-list 100 permit tcp host 192.168.33.3 host 172.22.242.23 eq 80 comment: To deny any source to access finance server address (172.22.242.23)

{destination addr} on port number 80 (web)

Corp1(config)#access-list 100 deny tcp any host 172.22.242.23 eq 80

comment: To permit ip protocol from any source to access any destination because of the implicit deny any any statement at the end of ACL.

Corp1(config)#access-list 100 permit ip any any Applying the ACL on the Interface

comment: Check show ip interface brief command to identify the interface type and number by checking the IP address configured.

Corp1(config)#interface fa 0/1

If the ip address configured already is incorrect as well as the subnet mask. This should be corrected in order ACL to work

type this commands at interface mode :

no ip address 192.x.x.x 255.x.x.x (removes incorrect configured ipaddress and subnet mask)

Configure Correct IP Address and subnet mask:

ip address 172.22.242.30 255.255.255.240 ( range of address specified going to server is given as 172.22.242.17 - 172.22.242.30 )

Comment: Place the ACL to check for packets going outside the interface towards the

finance web server.

Corp1(config-if)#ip access-group 100 out Corp1(config-if)#end

Important: To save your running config to startup before exit. Corp1#copy running-config startup-config

Verifying the Configuration:

Step1: show ip interface brief command identifies the interface on which to apply access list.

Step2: Click on each host A, B, C, & D. Host opens a web browser page, Select address box of the web browser and type the ip address of finance web server (172.22.242.23) to test whether it permits /deny access to the finance web Server.

Step 3: Only Host C (192.168.33.3) has access to the server. If the other host can also access then maybe something went wrong in your configuration. Check whether you configured correctly and in order.

Step 4: If only Host C (192.168.33.3) can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM.


Question No: 10

Which statement about access lists that are applied to an interface is true?

A. You can place as many access lists as you want on any interface.

B. You can apply only one access list on any interface.

C. You can configure one access list, per direction, per Layer 3 protocol.

D. You can apply multiple access lists with the same protocol or in different directions.

Answer: C

Explanation:

We can have only 1 access list per protocol, per direction and per interface. It means:

+ We cannot have 2 inbound access lists on an interface

+ We can have 1 inbound and 1 outbound access list on an interface


Question No: 11

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the maximum number of subnets. Which network address and subnet mask meet this requirement?

A. 192.168.252.0 255.255.255.252

B. 192.168.252.8 255.255.255.248

C. 192.168.252.8 255.255.255.252

D. 192.168.252.16 255.255.255.240

E. 192.168.252.16 255.255.255.252

Answer: B

Explanation:

A subnet mask of 255.255.255.248 will allow for up to 6 hosts to reside in this network. A subnet mask of 255.255.255.252 will allow for only 2 usable IP addresses, since we cannot use the network or broadcast address.


Question No: 12

Refer to the exhibit.

A problem with network connectivity has been observed. It is suspected that the cable connected to switch port Fa0/9 on Switch1 is disconnected. What would be an effect of this cable being disconnected?

A. Host B would not be able to access the server in VLAN9 until the cable is reconnected.

B. Communication between VLAN3 and the other VLANs would be disabled.

C. The transfer of files from Host B to the server in VLAN9 would be significantly slower.

D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal network function would resume.

Answer: D

Explanation:

Spanning-Tree Protocol (STP) is a Layer 2 protocol that utilizes a special-purpose algorithm to discover physical loops in a network and effect a logical loop-free topology. STP creates a loop-free tree structure consisting of leaves and branches that span the

entire Layer 2 network. The actual mechanics of how bridges communicate and how the STP algorithm works will be discussed at length in the following topics. Note that the terms bridge and switch are used interchangeably when discussing STP. In addition, unless otherwise indicated, connections between switches are assumed to be trunks.


Question No: 13

What are three approaches that are used when migrating from an IPv4 addressing scheme to an IPv6 scheme. (Choose three.)

A. enable dual-stack routing

B. configure IPv6 directly

C. configure IPv4 tunnels between IPv6 islands

D. use proxying and translation to translate IPv6 packets into IPv4 packets

E. statically map IPv4 addresses to IPv6 addresses

F. use DHCPv6 to map IPv4 addresses to IPv6 addresses

Answer: A,C,D

Explanation:

Several methods are used terms of migration including tunneling, translators, and dual stack. Tunnels are used to carry one protocol inside another, while translators simply translate IPv6 packets into IPv4 packets. Dual stack uses a combination of both native IPv4 and IPv6. With dual stack, devices are able to run IPv4 and IPv6 together and if IPv6 communication is possible that is the preferred protocol. Hosts can simultaneously reach IPv4 and IPv6 content.


Question No: 14

How does a DHCP server dynamically assign IP addresses to hosts?

A. Addresses are permanently assigned so that the host uses the same address at all times.

B. Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.

C. Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.

D. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.

Answer: C

Explanation:

DHCP works in a client/server mode and operates like any other client/server relationship. When a PC connects to a DHCP server, the server assigns or leases an IP address to that PC. The PC connects to the network with that leased IP address until the lease expires. The host must contact the DHCP server periodically to extend the lease. This lease mechanism ensures that hosts that move or power off do not hold onto addresses that they do not need. The DHCP server returns these addresses to the address pool and reallocates them as necessary.


Question No: 15

Scenario

Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links.

You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices.

An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. What is causing the problem?

A. There is an area ID mismatch.

B. There is a PPP authentication issue; the username is not configured on R3 and R6.

C. There is an OSPF hello and dead interval mismatch.

D. The R3 router ID is configured on R6.

Answer: D

Explanation:

Using the show running-config command we see that R6 has been incorrectly configured with the same router ID as R3 under the router OSPF process.


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