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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?
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Answer Posted / 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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