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Firewall
The NAT router allows receiving of number of a data streams. If it receives a transmission in the form of acknowledgement or data streams or error responses from an external server due to a particular request from an internal user, then it will receive the data, translate the address to local IP address and forward it to the requesting user. By preventing all incoming requests or connections except those expected or permitted, the router acts as a "firewall".
ICMP is used to send error and control messages. Ping uses ICMP to carry the echo-request and echo-reply.
Q. What is Subnetting ? Subnetting IP addressing is hierarchical First reach a device through its network id (netid) Then reach the host itself using the se
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
Hi, i am a college student doing a report on wireless broadband. I needed to know user requirements of user groups ie: Home user Small Medium Large Businesses Things like w
The Data link layer performs the following: Responsible for physically passing data from single node to another. Translates messages from the upper layers into data frames and adds
Normally, we think of communications science as dealing with the contemporaneous exchange of information among distant parties. Though, many of the same techniques employed in data
What's the difference among distance vector and link-state protocol?
Question 1: (a) In networking, there are different possible topologies. Explain the Linear bus, Ring and Star topology along with their advantages and disadvantages. (b) W
Responses Responses are sent from the server to the client. A responses is a three digit code that may be followed by additional textual information.
NETWORK INTERFACE HARDWARE: CPU can't operate data at network speeds. So in order to connect to the network device systems use special purpose hardware for network connection
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