Friday, November 25, 2011

Networking Articles and Tips

Networking Articles and Tips

CCNA Practice Questions-1

Posted: 24 Nov 2011 11:30 PM PST

Q1 ) What is the Cisco Catalyst store-and-forward switching method ? Ans In this mode switches receives the entire frame before it forwards it. The switch reads the cyclic redundancy check (CRC) to make sure the frame is not bad. If the frame is good, the switch forwards it. Because the switch stores the frame before [...]


Troubleshooting TCP/IP

Posted: 24 Nov 2011 11:30 PM PST

1)   Analyzing traffic using network monitor Frame is an encapsulation of network interface layer (layer 2) data. Each frame contains source and destination computer addresses, header of the protocol used to send data and data itself. Packet is an encapsulation of internet layer (layer 3) data There are two versions of Network Monitor, the basic version [...]


Firewall Best Practices

Posted: 24 Nov 2011 11:30 PM PST

There should physical security for the firewall. Deny all the traffic and allow only those ports, protocols and services which are required. Services & software which are not specifically ......More


What is a Router

Posted: 24 Nov 2011 11:30 PM PST

A router (pronounced /’rautər/ in the USA and Canada, pronounced /’ru:tə/ in the UK and Ireland, or either pronunciation in Australia) is a networking device whose software and hardware are usually tailored to the tasks of routing and forwarding information. For example, on the Internet, information is directed to various paths by routers. Routers connect [...]


HSRP versus VRRP

Posted: 24 Nov 2011 11:30 PM PST

HSRP stands for Hot Standby Routing Protocol. This is a Cisco Proprietary protocol. VRRP stands for Virual Router Routing Protocol. VRRP is IEEE standard which can support multi Vendor.


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