CCNA: Cisco Certified Network Associate Study Guide, 5th by Todd Lammle

By Todd Lammle

Here's the publication you want to arrange for Cisco's CCNA examination, 640-801. This research advisor used to be built to fulfill the exacting requisites of brand new Cisco certification applicants. as well as the attractive and obtainable educational process that has earned writer Todd Lammle the ''Best examine consultant Author'' award in CertCities Readers' selection Awards for 2 consecutive years, this up-to-date 5th variation presents:

  • In-depth assurance of each CCNA examination target
  • Expanded IP addressing and subnetting assurance
  • More special details on EIGRP and OSPF
  • Leading-edge examination practise software program

Authoritative insurance of all examination pursuits, together with:

  • Network making plans & designing
  • Implementation & operation
  • LAN and WAN troubleshooting
  • Communications expertise

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Additional resources for CCNA: Cisco Certified Network Associate Study Guide, 5th Edition (640-801)

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Computers are configured to receive this generically formatted data and then convert the data back into its native format for actual reading (for example, EBCDIC to ASCII). By providing translation services, the Presentation layer ensures that data transferred from the Application layer of one system can be read by the Application layer of another one. 12 Chapter 1 Internetworking The OSI has protocol standards that define how standard data should be formatted. Tasks like data compression, decompression, encryption, and decryption are associated with this layer.

The next bit is the G/L bit (also known as U/L, where U means universal). When set to 0, this bit represents a globally administered address (as by the IEEE). When the bit is a 1, it represents a locally governed and administered address (as in DECnet). The low-order 24 bits of an Ethernet address represent a locally administered or manufacturer-assigned code. This portion commonly starts with 24 0s for the first card made and continues in order until there are 24 1s for the last (16,777,216th) card made.

Many network applications provide services for communication over enterprise networks, but for present and future internetworking, the need is fast developing to reach beyond the limits of current physical networking. Today, transactions and information exchanges between organizations are broadening to require internetworking applications such as the following: World Wide Web (WWW) Connects countless servers (the number seems to grow with each passing day) presenting diverse formats. Most are multimedia and can include graphics, text, video, and sound.

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