Technology in Action
Pearson/Prentice Hall, Jan 1, 2006 - Business & Economics - 649 pages
For introductory courses in computer concepts or computer literacy often including instruction in Microsoft Office.
A Computer Concepts Text Focused on Today's Student! Technology in Action engages students by combining a unique teaching approach with rich companion media.
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To block access to logical ports, firewalls examine data packets that your
computer sends and receives. Data packets contain information such as the
address of the sending and receiving computers and the logical port that the
packet will use.
Transport Layer • The transport layer breaks the data up into packets and
sequences them appropriately. It also handles acknowledgment of packets (that
is, it determines whether the packets were received at their destination) and
FIGURE 13.8 Packets can each follow their own route to their final destination.
Sequential numbering of packets ensures they are reassembled in the correct
order at their destination. Your aunt's computer in San Diego figure 13.9 The
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Understanding the Parts
Technology in Focus
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