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ADVANCED RESEARCH PROJECT AGENCY (ARPA)
The efforts of ARPA was to active all its research groups have accept to new era computers. For this purpose ARPA started investing in ways to do data networking ARPA use a new approach consisting of internetworking and packet switching to fulfill the principle of source sharing. As a result of ARPA discovery the first network was established which was named ARPANET. In that way the internet was emerged in 1970's and it has started drastically since then as given in the figure below.
With explain the encryption model the help of diagram. Symmetric cipher model uses the secret-key or a single-key for encryption/decryption purposes. It employs a symmetric encr
Problem (a) Describe RSA algorithm with an example. (b) Answer the following RSA encryption, given the values of the primes are: p = 17, q = 11 and choosing e = 7. (c)
FRAME FORMAT AND ERROR DETECTION The changed frame format also adds CRC. If there is an error happened in frame, then it typically causes receiver to removed frame. The frame
UDP INTERACTION UDP follows four kinds of interaction 1-to-1: One application can interact with one application. 1-to-many: One application can interact with many
Size of Option field of an ip datagram is 20 bytes. What is the value of HLEN? What is the value in binary?
Risk Identification Risk management comprises of identifying, classifying and prioritizing organization’s information assets, threats and vulnerabilities also. Risk Identificati
Problem (a) The IEEE 802 series of standards describe both the Physical and Data Link layers of their respective technologies. Two important standards are 802.3 and 802.5, respect
Routers They transfer packets among multiple interconnected network machines (i.e. LANs of different kind). They perform in the data link, physical and network layers. They ha
What is the concept of topology?
(a) Show four Network Security attacks. How do they compromise security? (b) In what ways do the following devices or services contribute to security: (i) Firewall (ii) In
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