A Glance at the Session Layer of the OSI Model Throughout the history of networking‚ one model has stood the test of time for providing not only insight‚ but also a foundation by which all networking systems utilize in some form or fashion. The seven layers of the OSI model‚ which stands for Open System Interconnect‚ are: Application‚ Presentation‚ Session‚ Transport‚ Network‚ Data link‚ and Physical. These layers are the framework for networking‚ because they represent the roadmap‚ rules‚ and
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Fundamentals (Version 4.0) Updated March 11th 2009 100/100 1 A PC can not connect to any remote websites‚ ping its default gateway‚ or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC? Use the ipconfig /all command at the host�s command prompt. X Use the ping 127.0.0.1 command at the command prompt. Use the traceroute command at the command prompt to identify any failures on the path
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Securing routers Routers are the basic level of the Internet. It is responsible for the communication through the network‚ between computers and servers. It is important to secure the routers so the attackers can’t gain information from the routers. There are many ways of securing the routers such as upgrade the operating system‚ warning banners and disable unneeded services. Hardening cisco routers Upgrade IOS One of the important parts of securing routers is to choose the right router
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SKV PROPOSAL TO CLT FOR ACTIVE DIRECTORY AND DNS IMPLEMENTATION Date: April 22‚2013 Prepared by: Sainath K.E.V Microsoft Most Valuable Professional Introduction: SKV Consulting is a Premier Consulting providing Enterprise solutions on designing Microsoft Technologies. SKV follows Microsoft standard frameworks and proven methodologies in designing and implementing the Infrastructure solutions. SKV has successfully performed Enterprise Infrastructure transformations including both Desktop
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instructions Format: The Final Exam consists of a set of 45 questions from 15 important topics presented in the NSA program. You are required to answer only 15 questions from this set. Answers to these questions should be based upon the relevant courses in the program. Each topic contains three skill levels. You need to choose a question which exhibits the highest skill level you can demonstrate fully: Level 1: Definition or basic level. This level shows a basic understanding of the concepts
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Concept of Voice over Internet Protocol (VoIP) Voice over Internet Protocol‚ commonly known as VoIP‚ is a technology used for the transmission of voice information using the Internet Protocol (IP). VoIP allows the sending of voice information in a digital form using packets as opposed to the traditional circuit-committed protocols of the Public Switched Telephone network (PSTN). Traditionally when one wishes to make a phone call‚ a call is placed using a telephone that is connected to a circuit-switched
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different hosts within the transmission control protocol/Internet protocol (TCP/IP) suite. It is an application layer protocol. Under SMTP‚ a client SMTP process opens a TCP connection to a server SMTP process on a remote host and attempts to send mail across the connection. The server SMTP listens for a TCP connection on a specific port (25)‚ and the client SMTP process initiates a connection on that port (Cisco SMTP‚ 2005). When the TCP connection is successful‚ the two processes execute a simple request–response
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connection oriented? c. TCP 5. TCP communication could be likened to which of the following? d. Phone conversation 6. Which of the following protocols is connectionless? (Choose all that apply.) a. UDP b. IP 7. Which command verifies the existence of a node on a network? a. Ping 8. FTP offers more security than TFTP. True or False? True 9. List the three components of the TCP/IP three-way handshake.
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two) access-list 101 deny tcp 192.168.15.32 0.0.0.15 any eq telnet access-list 101 permit ip any any A. source ip address: 192.168.15.5; destination port: 21 not telnet port B. source ip address: 192.168.15.37 destination port: 21 not telnet port C. source ip address: 192.168.15.41 destination port: 21 not telnet port D. source ip address: 192.168.15.36 destination port: 23 satisfies telnet port‚ in correct range of addresses to satisfy access-list E. source ip address: 192.168.15.46; destination
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techniques to improve the error characteristics‚ and the impact on ATM network performance are then discussed. A delay model for satellite networks and the major components of delay and delay variation are described. A survey of design options for TCP over UBR‚ GFR and ABR services in ATM is presented next. The main focuses is on traffic management issues. Several recommendations on the design options for efficiently carrying data services over satellite-ATM networks are presented. Table
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