Download Cisco CCNA CCENT Exam 640-802, 640-822, 640-816 Preparation by Dale Liu PDF

By Dale Liu

3 tests, certifications, one whole Cisco education resolution for networking execs! The CCNA examination is an entry-level IT certification from Cisco platforms for pros fitting and retaining course and switched networks. the present examination fabric covers networking suggestions in addition to new and up-to-date content material on community safety basics and the fundamentals of instant networking. This e-book can be utilized as a research consultant for both tune you decide to obtain your CCNA - the one examination, 640-802 or the mixed 640-822 and 640-816, and for the CCENT certification which a scholar will obtain upon finishing touch of the 640-822 examination. the writer crew has prepared the content material that you can simply establish the targets for every 1/2 the mixed examination. * format of the consultant parallels the CCNA/CCENT examination ambitions for ease of research * info all elements of the tests together with safeguard and instant networking necessities * Covers every little thing from introductory to complicated topics-keeping the newbie and intermediate IT specialist in brain * bankruptcy finishing questions and solutions let for graduated studying * perform tests at the accompanying DVD support cast off test-day jitters

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Extra info for Cisco CCNA CCENT Exam 640-802, 640-822, 640-816 Preparation Kit

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Every access device, router, server, database, Web page is owned by someone. There is not one device on the Internet that is freely available and on the public domain. Every resource is owned by some company, agency of a government, or individual. The Internet was initially designed for the military to allow for teletype printers to receive orders and launch codes from the military in the event of a global nuclear war. In 1990 the initial Internet, then called the Advanced Research Projects Agency (ARPA) network, that was designed to allow connectivity with the government and university research networks to share data, was passed off to the National Science Foundation.

E. Replace switches with hubs. 45 46 CHAPTER 1: Introduction to Networking 7. What are the five items required to have a network? A. Data, segment packet frame, and bits B. Supercomputer, mainframe computer, desktop, laptop, handheld C. Sender, receiver, message, media, and protocol D. Video, audio, broadcast, multicast, unicast 8. As the administrator of a network you have one user that cannot see the network. Everyone else can see all of the network resources. In what order of the OSI model layers would you try and troubleshoot this problem?

IPX/SPX Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) was developed by Novell™ as an alternative to the TCP/IP Protocol suite, this ­protocol was introduced in Novell’s networking software called Netware in early 1980s. IPX is comparable to the IP layer of the TCP/IP Protocol where both of them work at the network layer or Layer 3 of the OSI model. The addressing in IPX uses a network number and then uses the MAC address for the host identifier of the workstation. Two devices on the same network can share data without the use of a router, whereas addresses on two ­different 33 34 CHAPTER 1: Introduction to Networking networks would require a router.

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