Articles for Interconnecting Cisco Networking Devices Part 1 (ICND1) 640-822
Cisco-proprietary solutions.
The Cisco-proprietary solutions are incompatible to WPA industry security standard....
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Converting a Decimal number to a Binary number
As we all know that computer runs on Binary numeral system. The binary numeral system, also called the base-2 number system, is a numeral system that represents numeric values using two symbols, 0 and 1. In computers, 0 and 1 are called bits. Bits are grouped in bytes to form binary numbers.......
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Ethernet
Ethernet refers to a family of standards that together define the physical and data link layers of LAN. The Institute of Electrical and Electronics Engineers (IEEE) has defined many Ethernet standards. IEEE has defined different standards for Ethernet at the physical layer on the basis of speed......
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Fiber cabling and EMI
Fiber cabling is not affected by electromagnetic interference (EMI), whereas copper cabling is vulnerable to it....
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How does a router choose which operating system to load?
When bootstrap is run during the boot process of a router, it looks for the boot field in the configuration register. According to the hexadecimal code, it chooses which operating system (OS) to load into RAM. The table below shows the values used in the boot field and the choices made by the......
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How to perform a physical installation of a router?
To perform a physical installation of a router, take the following steps:
Connect LAN cables to the LAN ports.
If using an external CSU/DSU, connect the router's serial interface to the CSU/DSU and the CSU/DSU to the line from the WAN service provider. And if using an internal CSU/DSU,......
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How to upgrade a Cisco IOS software image?
To upgrade a Cisco IOS software image, take the following steps:
Download the IOS image from the www.cisco.com site.
Place the IOS image into the default directory of TFTP server that is accessible from the router.
Use the copy command from the router. This will copy the file into......
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IEEE standards for Wireless LAN (WLAN)?
IEEE
Institute of Electrical and Electronic Engineers (IEEE) is a society of technical professionals. It promotes the development and application of electro-technology and allied sciences. IEEE develops communications and network standards, among other activities. The organization publishes......
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Internet layer unreliable protocols
The IP protocol works on the Internet layer and provides an unreliable, connectionless connection to other devices. For reliability and flow control, the TCP protocol, which works on the transport layer, is used....
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Less overheads of UDP
As far as overheads are concerned, UDP is more efficient than TCP....
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640-822 PrepKit at a Glance
| Includes | Free | Buy |
|---|---|---|
| Version | 8.03.05 | |
| Practice Tests | 1 | 5 |
| 30 | 312 | |
| Quiz | 15 | 155 |
| Final Test | No | Yes |
| Articles, How Tos.., Tips | Yes | Yes |
| Study Notes | 40 | 141 |
Tips and How Tos for 640-822 exam
