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Subnetting Practice

                            

 

What is the broadcast address of network 192.168.10.95/26 ?

   1. 192.168.10.255
   2. 192.168.10.127
   3. 192.168.10.191
   4. 192.168.10.63

**Q2**

**Q3**

**Q4**

**Q5**

**Q6**

**Q7**

**Q8**

**Q9**

**Q10*

**Q11*

**Q12*

**Q13*

**Q14*

**Q15*

**Q16*

**Q17*

**Q18*

**Q19*

**Q20*

**Q21*

**Q22*

**Q23*

**Q24*

**Q25*

Answer 1

Answer 2

Answer 3

Answer 4

Answer 5

Answer 6

Answer 7

Your Choice?

Result?

Correct answer?

This is the feedback!

Gns3 Lab Emulator Free Download

Free CCNA Practice Stuff Packet Tracer Activities Practice Questions For CCNA Exam

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Configure Cisco Router as FRS

Cisco Router as a Frame Relay Switch

Students Preparing for The CCNA Exam often need to have a frame relay switch in their lab to practice for the Frame-Relay. In this post we are going to tell you how to configure  Frame-Relay Switching on a Cisco Router.
The following are the steps with topology diagram explaining the step by step configuration :

In this example we will take four routers R1, R2, R3 and R4 . The Router R2 will be working as the Frame relay Switch. Now open the GNS3 Simulator and create the following topology with the help of four Routers.

Remember to create topology using only serial cables because Frame-Relay is a Wan technology and works only on Wan links.Now open the console of Router R2 and start configuring it for Frame-Relay with the commands given below.

R2>enable

R2#configure terminal

R2(config)#frame-relay switching

R2(config)#interface s0/0

R2(config-if)#no shutdown

 R2(config-if)#no ip address

R2(config-if)#clock rate 56000

R2(config-if)#encapsulation frame-relay

R2(config-if)#frame-relay intf-type dce

R2(config-if)#frame-relay route 103 interface s0/1 301

R2(config-if)#frame-relay route 104 interface s0/1 401

R2(config-if)#interface s0/1

R2(config-if)#no shutdown

R2(config-if)#no ip address

R2(config-if)#clock rate 56000

R2(config-if)#encapsulation frame-relay

R2(config-if)#frame-relay intf-type dce

R2(config-if)#frame-relay route 301 interface s0/1 103

R2(config-if)#interface s0/2

R2(config-if)#no shutdown

R2(config-if)#no ip address

R2(config-if)#clock rate 56000

R2(config-if)#encapsulation frame-relay

R2(config-if)#frame-relay intf-type dce

R2(config-if)#frame-relay route 401 interface s0/1 104

R2(config-if)#exit

To confirm your FRS is working properly you can use the following command :

R2#show frame-relay route

Basic Troubleshoot Cisco IOS

Cisco  IOS Support a Number of Commands that can be used to monitor and troubleshoot problems related to configuration andhardware diagonosis.Those who has good experience with cisco ios knows how to deal with problems and which commands would help recover and troubleshoot the problems. This post targets the audience which include engineers with less experience and trying to become more familiar with the tools available  for tshoot.

Show Processes CPU

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One of the most basic commands to run on a Cisco device is show processes cpu. In its full view the command will show all of the active processes on a device and how much of the processor time the process is taking both currently and historically. Figure 1 below shows a shortened version of the command:

This command would typically be used when troubleshooting a problem with a device that is having trouble performing basic functions; for example if a router is having trouble forwarding and routing packets without loss.

Show Memory

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Another command that is commonly in conjunction with the show processes cpu is the show memory command. This command is used to display the current status used and available memory; as with the show processes cpu command the show memory command also displays much more specific information about how memory is being allocated, however the initial information is often enough to get an idea of whether the problem happening is memory related. Figure 2 below shows a shortened version of the command:

Show ip interface brief

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One of the most commonly used commands overall is the show ip interfaces brief command. As shown in Figure , this command is very helpful as it displays the interface, its associated IP address and its current status.

Show ip route

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The show ip route command is another often used command on Cisco IOS devices; it is used to display the contents of the current IP (IPv4) routing table. Obviously, when working on a Cisco router the contents of the routing table are a central part of the device operations, if information within the routing table is incorrect it can quickly lead an engineer in a direction to solve a problem. Figure  below shows the command:

Ping

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Another very common tool is the ping command, obviously this is a command/tool that is not limited to Cisco IOS but can be used for a variety of different troubleshooting situations on Cisco devices. At its most simple, the ping command is used to send 5 100-byte ICMP echo packets to a specific destination; but the Cisco IOS extended ping command can do a number of different things that allow allot of troubleshooting flexibility. Some of these abilities include altering the ICMP source interface, packet size, packets sent, pattern sent, do not fragment bit, among others. Figure  shows an example of an extended ping:

Traceroute

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On the same track as the ping command above the traceroute command is a very basic command that can be very versatile and used in a number of different troubleshooting scenarios. At its most basic the traceroute command is used to trace the route that a packet takes from a source to destination, included with this information is an output of response times between the source and each intermediate device. One often unknown piece of information is that the traceroute command does not work exactly like the tracert command that is used on Microsoft devices; Cisco’s traceroute command uses UDP to trace the route from source to destination, often this is done with other implementations using an ICMP packet. This can be an advantage in many ways because many networks automatically drop ICMP echo packets because they are commonly used in Denial of Service (DoS) attacks. Like the ping command the traceroute command can be configured with a number of different extended parameters including source interface, timeout, number of probes per device hop and UDP port number among others. Figure below shows an example of the traceroute command:

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How To configure DHCP Server On a Cisco Router

Hey Friends Today i'm going to Tell You how we can configure a cisco Router as a DHCP Server .

Using a DHCP Server we can Dynamically Provide the following things to a device on our network:

ip address

subnet mask

default-route

DNS server address

In this example we will consider that we have a network range of 10.0.0.0 to 10.255.255.255 for

which we are going to configure the DHCP Server and the DNS Server address would be 4.2.2.2

the default route for each device on the network would be 10.0.0.1

We will exclude the network Range of 10.0.0.0 - 10.0.0.10 so that we can use these addresses later manually

Turn On Your Cisco Router and Type down the following commands :

Router>enable

Router#configure terminal

Router(config)#ip dhcp excluded-address 10.0.0.1 10.0.0.10

Router(config)#ip dhcp pool Maati

Router(dhcp-config)#network 10.0.0.0 255.0.0.0

Router(dhcp-config)#default-router 10.0.0.1

Router(dhcp-config)#dns-server 4.2.2.2