Let’s take an average page fault service time of 25 ms and a memory access time of 100 ns‚ then the effective access time in ns is effective access time = (1-p)*(100) +p(25 ms) =(1-p)*100+p*25‚000‚000) =100+24‚999‚900*p We saw effective access time is directly proportional to the page fault rate . suppose one access out of 1‚000 cause a page fault‚ effective access time is 25 ms the computer might be slow down by a factor of 250 because of demand paging. Suppose we want less than 10 % degradation
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From an IT management perspective‚ setting up a DHCP server would really depend on the size of the company. A DNS server could be recommended in any setting for faster browsing and recognition of sites. If your network is running the same Operating systems and it uses a name resolution method other than DNS‚ you can continue to use that method without needing DNS. If your network is running different operating systems‚ or it connects to the Internet‚ you will want to deploy DNS as the Internet consists
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Any public wireless hotspots‚ such as at restaurants‚ hotels‚ parks are not a good place to use any website that requires personal or financial information. When using an unsecure network‚ a hacker can easily get access to any webpage you access. They can access documents‚ pictures‚ bank information‚ your phone number‚ address‚ credit card information and passwords. Once the hacker has your username and password for one website they can try to log in as you on multiple other websites. This is why
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Unit 10 Assignment 1 Philip Johns ITT Technical Institute Unit 10 Assignment 1 Description of the firm: Pixel Incorporated develops animated shorts segments for its clients and employs 100 people. Pixel employees are users of application servers‚ email servers‚ and database technology‚ their network hardware blends equipment from Cisco and Hewlett-Packard. Pixel is known to transmit information throughout the organization over local area networks and via World Wide Web. Q: What should a company
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Setting up my new computer‚ with the Window 7‚ operating system was fairly simple. The setup directions were easy to follow‚ in order to get me up and running. Upon setting up my new system I took care of establishing my internet connection‚ from my Internet Service Provider‚ which happens to be Comcast. Now that I’m connected to the internet and ready to take on the World Wide Web the fun part begins‚ making sure it’s protected against any harmful attackers‚ and any virus threats. First off I
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Assignment 2 By Maribel Hernandez Remote access means allowing people to access your business computer systems even when not directly connected to your company network. Options for giving salespeople wireless remote access to the home office server are as follows: 1. Reduce sales cycles- Many struggle to reduce lengthening sales cycles. Inability to close the sale quickly can open the door to competitors or adversely affect the customer relationship. Routing customers to the right resources
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Communication Technologies Assignment 1 This is a rudimentary diagram representing the basic network that is employed in the Boston College Rochford Campus. This section represents a room‚ or department within the campus‚ showing how the Nodes are all connected to a multi-port switch using straight-through cables (Used to connect non-similar devices‚ such as a PC and a switch). The diagram on the left is a bog standard star topology‚ whereby a switch is connected to multiple nodes
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difference between “typical” and “normal?” * Normal distribution coincides with the bell curve‚ Majority in the middle average * Typical describes what it considered customary or expected‚ considered normal but they are not truly synonymous 2. What is the difference between formal and informal tests? Standardized and criterion referenced? Behavioral and objective or instrumental? Standardized testing compares patients performance to that of peers; same test given in some manner to allow
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Unauthorized user‚ weak password D. LAN –WAN: Hackers‚ weak traffic filtering E. WAN- FTP anon uploads‚ DoS/DDoS F. System Application: Fire‚ DoS/DDoS‚ SQL injection corrupting data G. Remote: user virus‚ remote from office unsecure‚ VPN tunnel hack 2) Identify vulnerabilities in the seven domains of IT within the organization. A. User: Infected media‚ social engineering B. Workstation: OS vulnerability‚ browser vulnerability C. LAN: Worms‚ LAN OS vulnerability D. LAN-WAN: malicious websites‚
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using dynamic threshold algorithm indicated in [3]. The source node randomly chooses one-hop neighbor node (nr) as a destination node. The Source nodes select one-hop neighbor node nr as the destination and send the RREQ to that node as shown in Fig 2. First‚ if nr had not launched black hole attack‚ then after the source node had sent the RREQ‚ then other nodes in addition to nr node also Reply RREP. It indicates that there is Attacker in Reply
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