CCENT: Cisco Certified Entry Networking Technician Study by Todd Lammle

By Todd Lammle

Begin your instruction for Cisco's new CCENT entry-level networking certification, your access aspect into Cisco's well known CCNA certification music. This entire research advisor from major Cisco authority Todd Lammle completely prepares you for the Interconnecting Cisco Networking units, half 1 examination (640-822) and the beginning of a occupation, with pages of examination necessities, real-world eventualities, and hands-on routines. subject matters contain the operation of information networks, tips to enforce either switched and routed networks, and masses extra.

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Additional info for CCENT: Cisco Certified Entry Networking Technician Study Guide: ICND1 (Exam 640-822) (Exam 640-822 With CD)

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By contrast, each and every port on a switch represents its own collision domain. Switches create separate collision domains within a single broadcast domain. Routers provide a separate broadcast domain for each interface. The term bridging was introduced before routers and hubs were implemented, so it’s pretty common to hear people referring to bridges as switches. That’s because bridges and switches basically do the same thing—break up collision domains on a LAN (in reality, you cannot buy a physical bridge these days, only LAN switches, but they use bridging technologies, so Cisco still calls them multiport bridges).

It allows various types of network hardware and software to communicate. It prevents changes in one layer from affecting other layers, so it does not hamper hardware or software development. The OSI Reference Model Basically, the ISO is pretty much the Emily Post of the network protocol world. Just as Ms. Post wrote the book setting the standards—or protocols—for human social interaction, the ISO developed the OSI reference model as the precedent and guide for an open network protocol set. Defining the etiquette of communication models, it remains today the most popular means of comparison for protocol suites.

RouterA(config-if)#enable secret todd 24. Which two statements best describe the wireless security standard that is defined by WPA? ) A. It specifies use of a static encryption key that must be changed frequently to enhance security. B. It requires use of an open authentication method. C. It specifies the use of dynamic encryption keys that change each time a client establishes a connection. D. It requires that all access points and wireless devices use the same encryption key. E. It includes authentication by PSK.

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