The advantage of using email to complain about a service or product is
that you are likely to get a faster response because this is the most
common way in which complaints are tackled, and it also means you have a
written record of the conversation between yourself and the company.
Answer:
Yes, it can be determined if an an external web site was likely accessed from a computer in the same department a couple of seconds ago.
Explanation:
Yes. “Dig” can be used to search that website in the local DNS server. A practical example would be to insert “dig google.com” and that will give us the result of the query time for searching and finding google.com. Supposing google.com was accessed a few seconds ago, then an entry for google.com is cached in the local DNS cache and the search or query time is 0 msec. If not the query time will be large.
Answer:
compared with 2010, the number of mobile users in 2011 has risen with 30.2 million
Explanation:
2010 -> 62.6 million
2011 -> 92.8 million
92.8 - 62.6 = 30.2 million
