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You have been hired to design a new infrastructure for a for-profit school system that includes two schools in the same city with 6,500 Staff, Faculty and Students. The school system has its headquarters downtown and each school is located at opposite ends of the city (east and west). The organization currently uses no centralized server system. Each school currently has individual workstations and computer labs are individually set up. The organization wants to get out of the current configuration and they want each school to handle authentication, IP Addressing, Name resolution, and printing. You have accepted the position and your first task in designing the new infrastructure for District 64 School System involves the handling of IP addresses. As you may know already, managing IP addresses is significantly important and can be even more complex. The IT Administrator has asked that you explain how IP addressing should be handled for both the servers and for your staff/student computers. In addition, take the time to address the following matters that the IT Administrators are seeking. Prepare a 1-2 page document that addresses the IT Administrator's issues. Explain if private IP addressing should be used in conjunction with NAT (Network Address Translation)? Describe what IP class you would consider using (if using DHCP, describe the type of scope; Super Scope or Sub-netter). Determine and explain what server operating system you will install.
Determine the decryption function. What is the decrypted plaintext?
After reading about attacks on servers like to ones used in one of company's departments, the CIO has asked you to come up with a report as to what.
If IPSec gives security at network layer, why is it that security mechanisms are still require at layers above IP?
You have been hired to give advice about use of cryptography to the developer of new two products within a company. Group A is developing a product which will encrypt each user's data before storing it on the hard disk,
Assume that N Ethernet stations, all trying to send at same time, need N/2 slot times to sort out who transmits next. Describe available bandwidth as function of N.
Explain whether this is still true today, and write down factors are moving wireless NICs into more dominant role, if any.
Most homeowners select to install a DSL for Internet connection what kind of networking hardware would you suggest?
The security manager is to estimate principal physical characteristics used for biometric user authentication, concepts of enrollment.
You have been asked to sketch a LAN with operation over a distance of about 100m.
For a language L over alphabet Sigma, let sup(L) denote language of all strings in Sigma* that contain a string of L as s substring.
Some network designers used alternative bus collision avoidance protocol known as the token bus protocol.
Suppose a BGPv4 router receives update for prefix P which indicates AS1 is next hop.
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