Thread: Networking Questions

Originally Posted by bashaece

what is main diffrence between DR and BDR

Hi Bashaece

DR( Designated Router) is elected when ever OSPF routers are connected to the same multi-access networks. It is done to reduce the number of adjancencies formed. If there is a change in topology the initial router will only updates the DR and BDR (Backup Designated Router). The DR in turn will update the remaining routers.

If the DR is down, then the BDR will act as DR.

If U have any issue, reply back

Originally Posted by bashaece

what is main diffrence between DR and BDR

in the ospf over broadcast n/w the term DR and BDr comes in account
DR-refred is Deginagted router
BDR= backup deginated router

The consept behinad choosing the dr and bdr over broadcast n/w is that insteed of sahrinf each routing update of on the n/w segment it will sahre all information to dr and bdr

dr and bdr is slected by Hello intervell and it is completly based upon router id

hi,
i've cts interview..
pls goe me some commonly asked basic interview questions..

Switch is a layer 2 device , works with mac address , faster than router , broadcasts the packets with in the network.when a switch is connected to a lan say 20 pcs first of all, it broadcasts the packets to all the 20 systems , learns the mac address of the pcs from their response builds up the mac address table.

So when a packet has to sent again to a particular pc say pc1,it wont broadcast to all the systems just it ll unicast ie, send the packet directly to the pc1.More over we can effectively maintain the VLANs , sorting them etc

Router is a layer 3 device capable of broadcasting packets out of a particular network.using a router we can wave a path for packets for a network, get it filtered using access list etc....

ftp stands for file transfer protocol used for transfering the file from one to another

what is VLAN

What do u under stand by radio link?

a vlan stands for a virtual local area network i.e you may have many vlans in a single network and people in the same vlan can communicate but can't do so to people in a different vlan

VLAN=Broadcast domain=subnet

Originally Posted by sjmurali

what is VLAN

VLAN(virtual local area network)
Its main purpose is to divide our network and provide security and defined access.
In simple it help in logical grouping of network.

6. What do u meen by Ethernet, Intranet, Internet, LAN, WAN, MAN.

what is bluetooth

Router is one that one network is connected to 4 or 5 or number of systems

Router works in which layer in osi model

what is ipsec vpn ?
what is ad ?
what is load balance over mpls ?
how do u creat tunnel ?
what is eps and AH ?
explain bet distace vector and link state protocol ?
what is adjancency?
what is LSA ?
diff bet OSPF and EIGRP ?
define the stubby area configuration and nssa ?
what is procedure to break the admin password for cisco and juniper and nortel device ?

Originally Posted by patra_wipro

what is ipsec vpn ?
what is ad ?
what is load balance over mpls ?
how do u creat tunnel ?
what is eps and AH ?
explain bet distace vector and link state protocol ?
what is adjancency?
what is LSA ?
diff bet OSPF and EIGRP ?
define the stubby area configuration and nssa ?
what is procedure to break the admin password for cisco and juniper and nortel device ?

what is frame-relay?

frame relay is a packet switching technology . it works at a data link layer

hi buddy if u want more question and answer. so i will provide do't worry

Originally Posted by mittra_ashish

Hi,
Here are few questions?

1. What is FTP & UDP?
2. What is the difference between switch & router?
3. As i know that DHCP works under a protocol in the name of "DORA". Can
anyone explain me about "DORA"?
4. Please explain me about the concept of "Kerboros" protocol & when i
works?

ans- FTP - is a Internet protocol whose long form is File Transfer Protocol which is used to transfer any files having any extension over net
UDP-is User Datagram Protocol.