Hi guys any query?????

Custom IP addressing with Class-C IP address and Class-B Subnet Mask

Hi,
Is it possible to use IP Address 192.168.1.100 with subnet mask 255.255.0.0 ?

How to find collision Domain and Broadcast domain

To find CD and BD follow these rules

1) HUB-                1CD - 1BD
2) Switch- Multiple CD - 1 BD
3) Router- Multiple CD - 1 BD
4) Bridge- Multiple CD -  Multiple BD

R---------------R----------------R
|                 |                 |
|                 |                 |
|                 |                 |
S               H--PC        B
|                 |                |

PC            PC             H-------PC

CD-7
BD-5
                                     

CCNA Subnetting Question with answer: What wil be the valid host range for network 172.23.12.0/23

Given Network = 172.23.12.0

Subnet Mask = /23 = 255.255.254.0

We calculate the Block Size for third Octet = 256-254

                                                       = 2

CCNA Subnetting Question with answer: What will be the Subnet Mask for Point to Point Link between Router?

For Point to point to link we require two IP addresses. For two IP address we can calculate the subnet mask as below.

Number of Host = 2 ^{off bits} - 2

2 = 2 ^{off bits} - 2

How to decrypt MD5 password of a router

Use this following link to decrypt MD5 password.

http://md5decryption.com/

How to Configure Telnet on a Router

Router>enable
Router#Conf t
Router(Conf)#Line VTY 0 4
Router(conf-line)#Line VTY 0 4
Router(conf-line)#password 12345
Router(conf-line)#login
Router(conf-line)#cntrl+z
Router#copy run start

How to configure Banner in the router

Router>enable
Router#Configure terminal
Router(Conf)#banner motd # **************This is my Core router*************** #
Router(Conf)#Cntrl+Z
Router#Copy Running-conf startup-conf

Routing and Routed Protocol

This topic describes the difference between Routing and Routed protocols

Cable connection for Router Switch and PC

There are different UTP cable standards used to connect devices.

Crossover UTP cable

1.  Router to Router
2. Switch to Switch
3. Hub to Hub
4. Switch to Hub
5. PC to PC

 Straight through Cable

1.  PC to Switch
2. Router to Switch
3. Router to Hub
4. Switch to PC
5. Hub to PC

Rolled Over Cable : It is used to configure router/switch

1. Router to PC
2. Switch to PC

Connection less and Connection Oriented Service

Transport Layer Service


Connection Less- In Connectionless service there is no acknowledgement, no error control and no flow control. It is faster than connection oriented. UDP uses connectionless service.

Connection Oriented- In Connection Oriented service there is acknowledgement, error control and flow control. It is slower than UDP. Example is TCP.

CCNA Subnetting Question with answer: What will be the broadcast IP for the Network 10.1.1.0/24?

As the Network IP address is 10.1.1.0

Given Subnet Mask =   255.255.255.0
Default Subnet mask = 255.0.0.0

Here we need to calculate the Subnetwork From second Octet.

CCNA Subnetting Question with answer: What will be the Valid host range for Network 10.0.1.0/28?

Network IP address is given as 10.0.1.0
Subnet Mask /28                       255.255.255.240 

As this is class A IP address so the default Network is the first octet. The subnet mask is borrowing the bits up to fourth octet. So we need to calculate the subnetwork from second octet to fourth octet.

CCNA Question with Answer of CCNA Exam

1) Which of the following describe private IP addresses? (Choose two.)
A) addresses licensed to enterprises or ISPs by an Internet registry organization
B) addresses that can be routed through the public Internet
C) a scheme to conserve public addresses
D) addresses that cannot be routed through the public Internet
E) addresses chosen by a company to communicate with the Internet
Answer: CD

How to Connect Network Printer in Windows

How can we connect to Network printer ?

1) Go to "Printer and Faxes"
2) Add a Printer
3) Welcome to add printer Wizard will get open. Click Next
4) Select "Local Printer Attached to this computer" and check on Automatically detect and click Next
5) It will open "New Printer Detection" Window. Click Next

What is LPD?

 LPD which stands for Line Printer Daemon. It is used to share printers on a network.It uses software Line Printer Program. This software spools the print jobs to the network printer. It uses two types of files a) Data Files b) Control  Files
Data files contain the data information and control files contain information for example queue number and node address.

CCNA Latest Dumps

To get Latest CCNA 640-802 dumps give your mail address.

Switching Modes

Switching Mode is a technique used by switch to transfer data between source and destination computers.

There are different modes of switching.

1) Store and forward

2) Cut through

3) Fragment Free

1) Store and forward: In store Forward Method Switch copies the entire data frame to its buffer memory before forwarding to the destination.Switch also performs CRC to ensure there is no loss of data. The data is forwarded to the destination MAC address by checking MAC address table. Example- CISCO catalyst 5000 series. 

What is VLSM

Quesion: What is  Variable Length Subnet Mask (VLSM) ?

Ans: VLSM (Variable Length Subnet Mask) is used to reduce the wastage of IP address space, to reduce the congestion. In VLSM, different length of subnet mask is used and more network can be addressed.

e.g.  255.255.255.128
        255.255.255.192
        255.255.255.224  ...........

Job opening for B.E and CCNA Certified candidates

There is an opening for B.E and CCNA certified candidates in UCO Bank as specialist officer

Last date is 17th October.

Check the Link

http://recruitment.ucobank.com/