application layer questions

johnifanx98

I know CCNA is focus on router/switch. But I still see questions like below,

Which email components are used to forward mail between servers? (Choose two.)
MDA
IMAP
MTA
POP
SMTP
MUA



All I know about email is POP protocol is one of them. Should I dig further? Any other application protocols I should prepare for???

FloOz

Wouldnt SMTP and IMAP be used to forward mail between servers? Isnt POP only for recieving mail?

As for your question it is good to have an understanding of all the protocols that exsist in the OSI+TCP/IP Layers. For example, as a network engineer you would be using the ping command often right? Well you should also know that ping uses the ICMP protocol to report back error messeges. Protocols are VERY important when it comes to routers and switches. At least I think they are lol.

NetworkVeteran

johnifanx98 wrote: »

Which email components are used to forward mail between servers? (Choose two.)
MDA
IMAP
MTA
POP
SMTP
MUA

See questions like this... where? I can't remember ever answering a question like this on a Cisco certification exam. This sounds more like Network+ territory or Microsoft territory.

networker050184

Agree with NetworkVeteran, this doesn't seem like any question you'd be expected to answer on a Cisco exam.

You will want to know where things fall within the OSI model, but nothing specific like this I wouldn't think.

Chitownjedi

Definitely a Network+ centric type question.. SMTP transfers email across the internet, and Pop/IMPA4 retrieves it from those servers, but I wouldn't expect you to see a specific question like that for the ccent/icnd2

MickQ

It's an N+ style question, but might (might) be a CCNA question. Having said that, I'm sure they'd prefer to ask something about subnetting instead.

spd3432

I agree it sounds more like a N+, Sec+, or Microsoft type question and for N+ or Sec+ would be more limited to which ports would be used.

Patel128

I had a question similar to that on my A+ exam.

mohamedshajid

But same question i was encountered in a ebook but actually i don't know that much of application layer and i knew there is a function that message, database print etc. but i din't go so deeply.

Musixa

johnifanx98 wrote: »

I know CCNA is focus on router/switch. But I still see questions like below,

Which email components are used to forward mail between servers? (Choose two.)
MDA
IMAP
MTA
POP
SMTP
MUA



All I know about email is POP protocol is one of them. Should I dig further? Any other application protocols I should prepare for???

I didn't encounter this type of question during my CCNA exam, but I did remembered encountering this question when I was reviewing in Cisco Networking Academy if I'm not mistaken.

SMTP is the protocol used for sending e-mail, while POP is the protocol used for receiving e-mail.
MTA (Mail Transfer Agent) and MDA (Mail Delivery Agent) are examples of Email Server Processes.
MTA is used to forward e-mail on another e-mail server implementing the SMTP protocol. So, if a mail is passed to a server, the receiving server will pass it to another server when the mail isn't locally hosted by it until the mail is sent to the proper server. MTA is used in this process. When it reached the proper server, mail is passed to MDA to address it to the user in the local server.
Im not quite sure about IMAP, but I think that it is used for the retrieval of e-mail. Just like POP. MUA (Mail User Agent) is used to compose e-mail messages. It allows messages to be sent and places received messages into the client's mailbox.

So if I would to answer the question, the answers would be MTA and SMTP since these two are used to forward mail between servers.
But in my opinion, you might not need to dig further with these email components, if you are preparing for CCNA. Basic knowledge to this ones are sufficient enough. I hope this helps.