check this out...this might help.....

Like vs Such As
What's the difference between like and such as?

Common mistake we make in there use -

Can you buy me some fruit like apples or pomegranate?

Why the above sentence is wrong?

Use of like in the above sentence mistakenly suggests that the speaker does not wants apples or pomegranate, but rather some other fruit that is similar to apples or watermelon.

In GMAT, like means similar to, and such as means for example.

e.g

Can you buy me some fruit like apples or watermelon?

In GMAT, this sentence implies that the speaker does NOT want apples or watermelon; instead, he prefers some fruit similar to apples and watermelon.

Correct - Can you buy me some fruit such as apples or watermelon?
apples and watermelon are examples of the type of fruit we want.

I would like you to buy such fruit as apples and watermelon for me.
This is simply a variation -- notice how such and as are separated.

if the comparision is b/w customer services and public relations then choosing like would be the apt thing.

But here the sentance is using customer services and public relations as examples for high profile department.

Hope this helps.

Well i am totally confused somebody help please.

There are two key takeaways from these posts. What's confusing is that both involve different uses of the word "like."

1) Like vs. such as

On the GMAT, "such as" must be used to introduce examples. "Like" may never be used for this function for the reasons that hemanth28 gave.

I enjoy sports such as cricket and tennis.

2) Like vs. as

"Like" is used to compare nouns:

Bill, like Wendy, ate a hot dog at the company barbecue.

Notice here that "like" is comparing the nouns Bill and Wendy.

"As" is used to compare clauses:

As Wendy always does, Bill avoided sharing his true feelings about the project proposal.

Here, "as" is used because what's being compared is "Wendy always does" and "Bill avoided ... proposal."

Rey