Hi ghanashyamprabhu
I've checked the Linux Image 1.0.0 and found the sshd inside the init.d directory. Please make sure you are booting from the SD card. An easy way to test this is to upload the Blink example and remove the USB and power cord, then if you power your board the LED should resume the blinking once it has finished booting up
Regards
JPMontero_Intel