The Secret of 200 125 cisco

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Q1.  - (Topic 8)

Which two statements about the tunnel mode ipv6ip command are true? (Choose two.)

A. It enables the transmission of IPv6 packets within the configured tunnel.

B. It specifies IPv4 as the encapsulation protocol.

C. It specifies IPv6 as the encapsulation protocol.

D. It specifies IPv6 as the transport protocol.

E. It specifies that the tunnel is a Teredo tunnel.

Answer: A,B

Q2.  - (Topic 8)

Which VTP mode prevents you from making changes to VLANs?

A. server

B. off

C. client

D. transparent

Answer: C

Q3.  - (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).

Q4.  - (Topic 5)

Syslog was configured with a level 3 trap. Which 3 types of logs would be generated (choose four)

A. Emergencies

B. Alerts

C. Critical

D. Errors

E. Warnings

Answer: A,B,C,D


The Message Logging is divided into 8 levels as listed below: Level Keyword Description

0 emergencies System is unusable 1 alerts Immediate action is needed 2 critical Critical conditions exist

3 errors Error conditions exist

4 warnings Warning conditions exist

5 notification Normal, but significant, conditions exist 6 informational Informational messages

7 debugging Debugging messages

The highest level is level 0 (emergencies). The lowest level is level 7. If you specify a level with the “logging console level” command, that level and all the higher levels will be

displayed. For example, by using the “logging console warnings” command, all the logging of emergencies, alerts, critical, errors, warnings will be displayed.

Q5.  - (Topic 3)

Which parameter or parameters are used to calculate OSPF cost in Cisco routers?

A. Bandwidth

B. Bandwidth and Delay

C. Bandwidth, Delay, and MTU

D. Bandwidth, MTU, Reliability, Delay, and Load

Answer: A


The well-known formula to calculate OSPF cost is Cost = 108 / Bandwidth

Q6.  - (Topic 3)

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.

Q7.  - (Topic 3)

Refer to the exhibit.

The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. What is the simplest way to accomplish this?

A. Configure a dynamic routing protocol on London to advertise all routes to Manchester.

B. Configure a dynamic routing protocol on London to advertise summarized routes to Manchester.

C. Configure a dynamic routing protocol on Manchester to advertise a default route to the London router.

D. Configure a static default route on London with a next hop of

E. Configure a static route on London to direct all traffic destined for to

F. Configure Manchester to advertise a static default route to London.

Answer: E


This static route will allow for communication to the Manchester workstations and it is better to use this more specific route than a default route as traffic destined to the Internet will then not go out the London Internet connection.

Q8. CORRECT TEXT - (Topic 6)

A 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

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

✑ host A

✑ host B

✑ host C

✑ host D

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

The Finance Web Server is assigned an IP address of


Select the console on Corp1 router Configuring ACL

Corp1>enable Corp1#configure terminal

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

{destination addr} on port number 80 (web)

Corp1(config)#access-list 100 deny tcp any host 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 ( range of address specified going to server is given as - )

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 ( to test whether it permits /deny access to the finance web Server.

Step 3: Only Host C ( 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 ( can access the Finance Web Server you can click on NEXT button to successfully submit the ACL SIM.

Q9.  - (Topic 7)

Refer to the exhibit.

Hosts in network are unable to reach hosts in network Based on the output from RouterA, what are two possible reasons for the failure? (Choose two.)

A. The cable that is connected to S0/0 on RouterA is faulty.

B. Interface S0/0 on RouterB is administratively down.

C. Interface S0/0 on RouterA is configured with an incorrect subnet mask.

D. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.

E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.

F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.

Answer: E,F


From the output we can see that there is a problem with the Serial 0/0 interface. It is enabled, but the line protocol is down. There could be a result of mismatched encapsulation or the interface not receiving a clock signal from the CSU/DSU.

Q10.  - (Topic 6)

How does using the service password-encryption command on a router provide additional security?

A. by encrypting all passwords passing through the router

B. by encrypting passwords in the plain text configuration file

C. by requiring entry of encrypted passwords for access to the device

D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges

E. by automatically suggesting encrypted passwords for use in configuring the router

Answer: B


By using this command, all the (current and future) passwords are encrypted. This command is primarily useful for keeping unauthorized individuals from viewing your password in your configuration file

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