Explain why a TCP connection over an Ethernet segment never runs into problems with fragmentation.
What will be an ideal response?
TCP uses three-way handshaking when two peers make a connection. In this packet
exchange, each host can send its MSS (Maximum Segment Size) which implicitly indicates the
MTU of each interface. By this method, each host can adjust its MSS size and fragmentation can be avoided. If there is a router between two peers which has smaller size of MTU than one of each peer, the router needs to fragment a datagram. In this case, TCP can set DF bit in all IP datagram and if there is any router which needs to fragment a datagram, ICMP error message can be delivered to the source host and the MSS is adjusted to avoid these problems.
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In an operation called "____ the buffer," unwritten values in the buffer are written to a file.
A. cleaning B. closing C. flushing D. validating
The PictureBox control is used to display:
a) text and images b) only images c) only text d) colors
Many modern computer applications utilize __________, mixing text, graphics, sound, animations, and other elements to form an integrated, interactive environment.
a. the Internet b. multiple programs c. accelerator boards d. multimedia
The term ____________________ refers to any program or set of program instructions designed to surreptitiously enter a computer, disrupt its normal operations, or gather sensitive data.
Fill in the blank(s) with the appropriate word(s).