If a client initiates the SMTP communication using an EHLO (Extended Hello) command instead of the HELO command some additional SMTP commands are often available. They are often referred to as Extended SMTP (ESMTP) commands or SMTP service extensions. Every server can have its own set of extended SMTP commands.
Answer:
a reverse chronological journaling site. a user-collaborated content site, typically text in nature
Explanation:
It is the website that is based on knowledge. It is the text based site that is also called structure content.
The most common example of Wiki is Wikipedia.
Answer: NOR or XNOR gate
Explanation:
In NOR gate we get a high value of the output only when its input has a low value. i.e. for 0 and 0 we get a value of 1.
In XNOR gate which is the compliment of the OR gate we get the output as 1 when all the inputs are 0.
8 kilobytes have addresses from hex 0x0000 to 0x1fff (=8191). You would need 13 bits for that. 2^13-1 = 8191. If you write the highest address in binary, you get:
0001 1111 1111 1111. Just count the number of 1's.
If you find this difficult to visualise, write down all logical addresses of a small page size of e.g. 8 bytes. You can see you can make all addresses with 3 bits.
