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(a) Describe DES encryption with a block diagram and brief steps. (b) How does triple DES improve security. What is the effective key length of triple DES? How can 3DES be compa
SUCCESS OF IP: IP has accommodated dramatic modification since real design. But basic rules are still appropriate today. There are many new kinds of hardware. SCALING:
QUESTION: (a) Ethernet has grown in popularity in the recent years and is now used in LANs. Give three reasons for the success behind Ethernet. (b) Ethernet uses the CSMA/CD
802.11 WIRELESS LANs AND CSMA/CA: IEEE 802.11 is standard wireless LAN that needs radio signals at 2.4GHz. Its speed is 11Mbps. The older computers use radio signals at data
What is the use of it
#Under what circumstances would the use of a SecSDLC be more appropriate than an SDLC?
Consider the details of the X.509 certificate shown below. a. Identify the key elements in this certificate, including the owner''s name and public key, its validity dates, the nam
Hypothetical reliable data transfer protocol: A jumping window based Go-back-N ARQ protocol for file transfer using UDP as the transport protocol: In this protocol, a window o
Sometimes the special character may see in data and as a part of data they will be misinterpreted as packet data. The solution to this cause is Byte stuffing. In general to
MAC Address The address for a machine as it is identified at the Media Access Control (MAC) layer in the network structure. MAC address is generally stored in ROM on the n
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