MCSE :
21. Spanning Tree Protocol (STP) IEEE Specification 802.1d
is used to prevent routing loops. In Cisco Catalyst 5000 series
switches, use BDPUs (Bridge Protocol Data Units) to determine the
spanning tree topology. STP uses a Tree Algorithm (STA) to prevent
loops, resulting in a stable network topology.
22. HTTP is the protocol used for
accessing the World Wide Web services. HTTP operates over TCP/IP.
TCP/IP is the protocol, which is used by all internet applications
such as WWW, FTP, Telnet etc. IPX/SPX is proprietary
protocol stack of Novell NetWare.
23.
1. The term "Segments" is usually associated
with Transport layer
2. The term "Packets" is usually associated
with Network Layer and
3. The term "Frames" is usually associated
with Data Link Layer
24. The port number used by TCP is 6 and
that of UDP is 17.
TCP: TCP is a
full-duplex, connection-oriented protocol. It incorporates error
checking as well.
UDP (User Datagram Protocol): UDP is a thin protocol. UDP is a
connectionless protocol. It doesn't contact the destination before
sending the packet and doesn't care whether the packet is reached at
the destination. UDP uses port number 6.
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