Few CCNA Questions for clarifications

Hi All,

I'm taking ICND2 this coming Nov.11 (wish me luck). I do have a few questions to better understand some topics covered in the exam and I would really appreciated if some of you guys could simplify it for me.

1. What does clock rate command do?
2. DS1/T1 has 24 DS0s w/c equals to 1 channel w/c equals to 1voice/data line. Does it mean that if I have DS1/T1, I will be able to receive 24 incoming calls and/or 24 outgoing calls simultaneously?

Hope someone can elaborate that to me in a simplified term. Much appreciated guys.:D

Find more posts tagged with

Save $250 on 2025 certification boot camps from Infosec!

Book now with code EOY2025

Button

Comments

SWtacoma

The clock rate command controls the timing for serial connections. This simulates the timing that the ISP would set on the line. This command is usually only utilized in a lab scenario to replicate WAN connections. As for your second question I am not sure.

Magic Johnson

Remember a call is two way.

davenull

jayskata wrote: »

Hi All,

2. DS1/T1 has 24 DS0s w/c equals to 1 channel w/c equals to 1voice/data line. Does it mean that if I have DS1/T1, I will be able to receive 24 incoming calls and/or 24 outgoing calls simultaneously?

It depends on the codec used. For G.711 it's 64kbps, but it's only 8 kbps for G.729a (plus overhead). It's outside of ICND2 scope I believe.