星期四, 1月 07, 2010

Determining an Effective Troubleshooting Strategy

Topic title: Using layered models for network-device troubleshooting

1, During which stage of the encapsulated data flow process does an end system take data from an application and convert it as needed for transmission over a physical network?

Choose an option.

The forwarding stage
The origination stage <correct answer>
The terminating stage
The transport stage

2, What kind of device is a multilayer switch considered to be?

Choose an option.

Layer 1
Layer 2
Layer 3 <correct answer>
Layer 1/2


3, Which TCP/IP layer maps to the Physical and Data Link layers of the OSI model?

Choose an option.

The Application layer
The Internet layer
The Network Interface layer <correct answer>
The Transport layer

4, During which stage of the encapsulated data flow process does data pass over the physical medium as bits?

Choose an option.

The forwarding stage
The origination stage
The terminating stage
The transport stage <correct answer>


5, What kind of device is a standard switch considered to be?

Choose an option.

Application layer
Data-link layer <correct answer>
Network layer
Transport layer

6, What kind of device is a hub considered to be?

Choose an option.

Data-link layer
Network layer
Physical layer <correct answer>
Transport layer


7, Which TCP/IP layer is responsible for exchanging segments between devices on a TCP/IP network?

Choose an option.

The Application layer
The Internet layer
The Network Interface layer
The Transport layer <correct answer>


8, The network interface TCP/IP layer maps to which OSI layers?

Choose more than one option.

The application layer
The data-link layer <correct answer>
The network layer
The physical layer <correct answer>
The session layer


9, The Application TCP/IP layer maps to which OSI layers?

Choose more than one option.

The Application layer <correct answer><correct answer>
The Network layer 
The Presentation layer <correct answer> <correct answer>
The Session layer <correct answer>





Topic title: Following the general network troubleshooting process


1, Which of the following tasks should you perform if you discover a new problem when testing the solution?

Choose more than one option.

You isolate the problem to identify the cause
You document the attempted solution <correct answer>
You return to the beginning of the troubleshooting process <correct answer>
You reapply solutions that you attempted earlier


2, During which stage of the general troubleshooting process should you identify characteristics of problems?

Choose an option.


Correcting the problem
Gathering symptoms
Isolating the problem <correct answer>


3, What is the first stage in the general troubleshooting process?

Choose an option.

Correcting the problem
Gathering symptoms <correct answer>
Isolating the problem


4, Identify the true statements about the general troubleshooting process.

Choose more than one option.

Stages are mutually exclusive
Problem solutions may cause other unidentified problems <correct answer>
You can retrace your steps at any point in the process <correct answer>
You should establish a policy for each stage <correct answer>



5, Identify the stages in the general troubleshooting process.

Choose more than one option.

You document all network devices
You correct the problem <correct answer>
You gather symptoms <correct answer>
You identify network components
You isolate the problem <correct answer>

6, During which stage of the general troubleshooting process should you use questions as a method of localizing the problem to a smaller range of possibilities?

Choose an option.

Correcting the problem
Gathering symptoms <correct answer>
Isolating the problem


7, During which stage of the general troubleshooting process do you document a solution?

Choose an option.

Correcting the problem <correct answer>
Gathering symptoms
Isolating the problem


=========================================



Topic title: Gathering network, user, and end-system symptoms


1, Which stage in the process of gathering network symptoms involves identifying if the problem is at the core, distribution, or access layer of the network?

Choose an option.

You analyze existing symptoms
You determine ownership
You determine symptoms
You document symptoms
You narrow the scope <correct answer>

2, All of the symptoms have been gathered at an end system but the problem is still not resolved. What should you do next?

Choose an option.


You begin isolating the symptoms to identify a single problem <correct answer>
You assign a new IP address for the end system
You reboot the end system
You replace the end system


3, Which command shows the current state of the IP routing table on a Cisco device?

Choose an option.

route print
route -n
show ip route <correct answer>
show routing table


4, Which stage in the process of gathering network symptoms involves developing a description of the problem?

Choose an option.

You analyze existing symptoms <correct answer>
You determine ownership
You determine symptoms
You document symptoms
You narrow the scope

5, Which stage in the process of gathering network symptoms involves determining if the problem is more likely a hardware or software configuration problem?

Choose an option.

You analyze existing symptoms
You determine ownership
You determine symptoms <correct answer>
You document symptoms
You narrow the scope


6,Which stage in the process of gathering network symptoms involves identifying whether a problem is inside or outside the boundary of your control?

Choose an option.

You analyze existing symptoms
You determine ownership <correct answer>
You determine symptoms
You document symptoms
You narrow the scope

7, Which UNIX and Mac command displays information relating to IP configuration of an end system?

Choose an option.

ifconfig -a <correct answer>
ifconfig /all
ipconfig -a
ipconfig /all


8, Which command tests connectivity by sending an echo request packet to an address and waiting for a reply?

Choose an option.

ping <correct answer>
show ip route
telnet
tracert


9, Which Windows command will identify the route that a packet takes through a network?

Choose an option.

ping
route -n
traceroute
tracert <correct answer>

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