1. What is the difference between layer 2 and layer 3
in the OSI model?
2. What is the difference between a hub, switch, and
router?
3. What is a VLAN?
4. What is the difference between TCP and UDP?
5. How do you distinguish a DNS problem from a network
problem?
6. What is a runt, Giant, and collision?
7. What is a broadcast storm?
8. What is the purpose of VRRP?
9. What is a VPN?
10. What information about a peer would I need to
establish a VPN?
11. What is a full-class C in CIDR notation?
12. What is a default route?
13. What is a metric?
14. What is a MAC address?
15. What is ARP/RARP?
16. Describe a TCP connection sequence
17. What is MTU?
18. What other TCP setting can you modify besides MTU
to shorten packets?




Answers were Sorted based on User's Feedback



1. What is the difference between layer 2 and layer 3 in the OSI model? 2. What is the difference..

Answer / priyanka sharma

4:tcp is connection oriented
it is reliable
it gives the accknowledgement
but
udp is connection less
it is unreliable
it do not give the accknowledgement

Is This Answer Correct ?    28 Yes 3 No

1. What is the difference between layer 2 and layer 3 in the OSI model? 2. What is the difference..

Answer / arun

1. layer 2 deals with frames and layer 3 deals with
packets. layer 2 uses mac and layer 3 uses ip appletalk ipx
etc.
2.hub:serves one port as input other ports as output in
data forwarding.
switch:breaks collison of which port as output from
incoming port (from their mac table)within lan.
router:it is more intelligence to decide easiest and
cheapest path from source of one n/w to desti of other
network
3.segregation of lan may be for security,avoidance of
cd,bandwith consumption
4tcp-wired conn and reliable of datatx
udp-wireless conn and non reliable of data tx.

Is This Answer Correct ?    13 Yes 2 No

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