Questions before taking CCNA

Hello
I am studying for a CCNA certification. I have some questions.

1. Does a DHCP server use gratuitous ARP before leasing IP addresses?
2. Differences between CIDR, VLSM and route summarization?
3. Can a host belong to many different VLANs at the same time? What would be its porpose?
4. Examples of networks Multi access broadcast, and no multi access broadcast.

Thank you [/list]

Hi Aizzaac,

Please find the answers inline:

1. Does a DHCP server use gratuitous ARP before leasing IP addresses?
Ans: Yes Gratuitous ARP and ping are used by the DHCP to detect conflicts. Usually DHCP clients use Gratuitous ARP for checking conflicts and ping is used by the server.

2. Differences between CIDR, VLSM and route summarization?
Ans: Guess this will help:
www.xs4all.nl/~itbg077/studieavond/IP/IP-Summary.pdf

3. Can a host belong to many different VLANs at the same time? What would be its porpose?
Ans: A host can belong to only one Vlan at a particular time, usually we have servers with multiple NICs which are in different VLANS, basically used for load balancing and stuff!

4. Examples of networks Multi access broadcast, and no multi access broadcast.
ANS: Multi access broadcast : Ethernet
NBMA: frame-relay

Hope it helps

Regards,
Sujit

Thank you Sujit.

I have some other questions..... :roll:

I. What do these mean:
1. access-list 115 permit ip 0.0.0.0 255.255.255.0 any

2. ip nat pool test 172.16.11.70 172.16.11.71 prefix-lenght 24
ip nat inside source static 10.10.10.4 172.16.6.14
ip nat inside source pool test

II. Besides Non-broadcast and broadcast multiaccess, there are
also the non-broadcast and broadcast multipoint. What is the
difference? are there any drawings?

III. Scenario: I have 2 routers kinked by a serial interface (every
router has its own lan networks too). When a packet sent from
one of these LAN networks is traversing the serial link; What
would be the source and destiny MAC address?


Regards

How close are you to taking the exam?

I'm guessing there is a degree of brain dumping going on here!

I'm guessing there is a degree of brain dumping going on here!

My thought exactly!