CCNA - hard questions for me

Author

hard questions for me

sallama18

2001-12-18, 6:38 am

1-)ip:156.100.11.37 mask:255.255.240.0 why this address woul reguire the use of the ip subnet-zero command.?Help please..

2-)What means of multiprotocol rouing?

3-)Which type of ethernet operation loops back the send frame?

4-)Your router is not booting properly. You would like to verify the current register settings. Which of the following commands can be used at the command prompt to view this information? Choose one.?

show config-register
show register
o
r
o/r

5-)If you are using the new Cisco IOS release 12.0 what command would you use to erase NVRAM? Choose one.

write erase
delete nvram
erase nvram
erase startup-config

help me please....

Hippo

2001-12-18, 7:21 am

The answers to these questions should be in your study guide. What study gudie are you using?

Anyway, here goes with my answers;
1, 156.100.11.37 with mask:255.255.240.0 will generate a number of subnets in the final octect, for example 156.100.11.0. These subnets, known as 'subnet-zero' are not usually allowed, however Cisco overcome this problem by putting a command in global config mode of ' ip subnet-zero', to tell the router to ise any subnet-zero it finds.

2, Multiprotocol routing is a router's ability to handle and process more than one routing protocol at a time.

3, Don't know, possibly a loop back test on an ethernet NIC card

4, None of the options you have listed are vaild Cisco commands. To see the value of the config register, try 'show version'

5, erase startup-config

Please remember that the people on this forum prefer that you attempt to read the relevant chapter in your study guide first, then if you still have a problem, post a message - and keep it to one or two questions at the most.

Hope this helps.
hippo (on lunch break)

dmaftei

2001-12-18, 7:45 am

quote:
Originally posted by sallama18
1-)ip:156.100.11.37 mask:255.255.240.0 why this address woul reguire the use of the ip subnet-zero command.?Help please..

The resulting subnets from 156.100.11.37 255.255.240.0 are 156.100.0.0/20, 156.100.16.0/20, 156.100.32.0/20, 156.100.48.0/20, etc. 156.100.11.37 belongs to the first subnet (which has a host address range 156.100.0.1 through 156.100.15.255). Go with Hippo from now on.

quote:
4-)Your router is not booting properly. You would like to verify the current register settings. Which of the following commands can be used at the command prompt to view this information? Choose one.?

I believe the question implies you end up in ROMMON (since the router is not booting properly...), so the answer should be o

The Ghost

2001-12-18, 10:27 am

show config-register command shows you how the router is booting.

the o command is not supported on all routers rommon mode.

sallama18

2001-12-18, 10:47 am

5, erase startup-config

answer is not erase startup so ý post this to the froum

dear ghost and hippo,

the o command is not supported on all routers rommon mode.

but aswer was o .I dont anderstant why o ?So ý post this to the froum.

dear dmaftei ,

ý know subnetting but ý don't know what mean zero subnet ý am looking for zero subnet what mean

and
Please remember that the people on this forum prefer that you attempt to read the relevant chapter in your study guide first, then if you still have a problem, post a message - and keep it to one or two questions at the most

ý read more than more so it is not bussiness to say me that comment.Thanks realy every man

dmaftei

2001-12-18, 11:51 am

quote:
Originally posted by sallama18
ý know subnetting but ý don't know what mean zero subnet ý am looking for zero subnet what mean

Subnet zero is the first subnet you get. It is so called because it looks exactly like the major network you're subnetting (that is, with zeros in the host part of the major network). In your example:

Major net: 156.100.0.0/16

Subnets (with 255.255.240.0):
156.100.0.0/20 <-- looks like the major net
156.100.16.0/20
156.100.32.0/20
etc.

Better now?!

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