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Types of Redundancy Checks
Parity Check
CRC (Cyclic Redundancy Check)
Check Sum
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
Dissimilar kinds of firewalls?
"arpa" is used by the Cisco IOS for which encapsulation types Ans) Ethernet_II
Discuss an example of threats in computer software Assume only one attack out of the above list i.e., the virus attack. Though the present anti-virus software solutions can det
Clients and Servers are dividing logical entities that work together over a network to accomplish a task. Many systems with very dissimilar architectures that are connected togethe
What are firewalls? Firewalls serve to protect an internal network from external attacks. These external threats can be hackers who need to steal data or computer viruses that
Modulation and DeModulation
CONNECTION MULTIPLEXING: In various circumstances transceiver can be in convenient e.g. workstations in a LAN. Connection multiplexer acts multiple computers to a single tran
Encryption/decryption using by SSL Once a session is established, the SSL generates a session key using public-key encryption to exchange information between the client and ser
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the
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