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DNS Tunneling – Domain Name Server
"If, on one system, it is possible to transmit bits to another in any form, and in turn receive a reply as a result of that transmission, then it is inherently impossible to effectively limit or censor the flow of data between them."
The mechanism for DNS tunnel comprises of binding or can say encapsulating the binary data within DNS queries and replies in order to implement the DNS name lookup itself , using base32 and base64 encoding, in order to enable the bi-directional carrier for the data. Hence, the user may also tunnel the data simultaneously to remote system, while domain name lookups on a network.
What is mesh topology Mesh topology is a setup wherein every device is linked directly to each other device on the network. Consequently, it needs that each device has at least
Types of Redundancy Checks Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redundancy Check)
Error Detection-- CRC Powerful error detection system Rather than addition, binary division is utilized A series of redundant bits called "CRC" or else "CRC remai
VLAN ( Virtual Local Area Network) is a concept of creating distinct broadcast domains. It is a network which aims at partitioning the physical network. VLAN comprises all the attr
Many benefits of configuring VLAN as listed below: • Performance Enhancements: It reduces heavy load on the network by permitting operations at lower latencies by using VLAN t
System Deadlock A deadlock refers to the situation when simultaneous processes are holding resources and preventing each other from completing their implementation. The fol
What is a private IP address? Private IP addresses are allocated for use on intranets. These addresses are used for internal networks and are not routable on external public ne
Connection to backbone LAN In most cases, interconnection with stations on a wired backbone LAN is needed. For infrastructure wireless LANs, this is simply accomplished by the
Enumerate about the Star networks Comments: 1 - If one connection/station fails the other devices aren't affected 2 - If central hub breaks down, the whole network fail
Question 1 Explain FDM and TDM with example Question 2 Define B-ISDN and explain its services Question 3 What is symmetric key cryptography? Describe one symmetric
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