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Optimizing STP
Because there is a separate instance of the spanning tree for every active VLAN, a separate root election is conducted for each instance. If the default switch priorities are used in root selection, the similar root is elected for every spanning tree, as we have seen. This could lead to an inferior design. Some reasons to control the selection of the root switch include:
Layered Architecture The best way to understand any complex system is to break it into pieces and then analyze what they do and how they interact. The most logical app
DNS Message There are the only two kinds of DNS message DNS query and reply messages. Further mote both query and reply message have the same format as shown in figure.
what is a WAN
What is EGP (Exterior Gateway Protocol)? It is the protocol the routers in neighboring autonomous systems use to recognize the set of networks that can be reached within or by
Ethernet Frame Format Consists of seven fields There is No mechanism for acknowledging received frames considered an unreliable medium
Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.
Command Structure: Commands are all-upper-case strings, either 4 or 6 characters in length. Table 1 shows the commands, and (for method commands) the parameters, return values, ex
Private Networks The information routes from one networks to another network through a leased line. If an organization needs privacy can use a private networks or networ
Q. Show Nonreturn to Zero encoding? - Value of signal is for all time positive or negative - NRZ-L Signal level depends on bit represented; positive typically means 0
Describe the concept of broad cast and multi-cast?
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