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High-Tech Dictionary >>
Word Definition
Numeric Paging or alphanumeric-paging
Numeric Paging is the most widely used type of paging. The caller simply calls your pager phone number and enters the number where you can reach them. This number appears on the receiver's pager, and the receiver can call the sender. On the other hand, text paging allows callers to send the receiver a short message that you can act on immediately.
Nyquist filter
Nyquist filter is an ideal low pass filter with a cutoff frequency equal to the sampling rate. This technique is used to convert PAM pulses to an analog signal in D/A converters.
Nyquist rate
Nyquist rate is the minimum sampling rate proposed by Nyquist for converting a band limited waveform to digital pulses. The rate must be at least twice the highest frequency of interest in the waveform being sampled.
NAS: Network Attached Storage
Network Attached Storage (NAS) is a data storage mechanism that uses special devices connected directly to the network media. These devices are assigned an IP address and can then be accessed by clients via a server that acts as a gateway to the data, or in some cases allows the device to be accessed directly by the clients without an intermediary.
Native Code
Native code, also known to as native language, is the programming code to run on a specific processor using that processor special instruction set. Typically, the native code written for one processor cannot be run on another processor, unless the code runs through an emulator software program that instructs the computer to mimic the processor the native code is meant for.
NDIS: Network Driver Interface Specification
The Network Driver Interface Specification (NDIS) is an application programming interface (API) for network interface cards (NICs). It was jointly developed by Microsoft and 3Com Corporation, and is mostly used in Microsoft Windows on Intel-based computers, but the open-source ndiswrapper project allows many NDIS-compliant NICs to be used with Linux. Basically, Network Driver Interface Specification (NDIS) enables a single network interface card (NIC) to support multiple network protocols. For example, with NDIS a single NIC can support both TCP/IP and IPX connections. NDIS can also be used by some ISDN adapters.
NEBS Level 1
"NEBS Level 1", the lowest level of NEBS standard developed by Bell Labs for RBOC central office equipment, addresses the personnel and equipment safety requirements of GR-63-CORE and GR-1089-CORE. This is useful for getting prototypes into a lab trial. It's also a requirement that is imposed on Competitive Local Exchange Carriers (CLECs) in order for them to deploy equipment into an RBOC's network.
NEBS Level 2
"NEBS Level 2", the second level of NEBS standard developed by Bell Labs for RBOC central office equipment, addresses equipment operability, but in a controlled environment. For example, equipment could be used in a data center, however, if the equipment performs non-critical operations it could be used under environmental extremes. Note that this level is very rarely used because it is ambiguous.
NEBS Level 3
"NEBS Level 3", the highest level of NEBS standard developed by Bell Labs for RBOC central office equipment, means the equipment is ready to be installed in the carier class operational network for the long haul. The equipment will operate under the environmental extremes found in a central office. In a nutshell, the equipment meets all of the requirements of GR-63-CORE and GR-1089-CORE.
NetApp Filer
NetApp Filer, a product group from Network Appliance, is highly scalable and high performance network storage appliances for large enterprises and service providers. Filers use Network Appliance's Data ONTAP microkernel OS and Write Anywhere File Layout file system (WAFL).
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Random Words
 
Word : Transmission Frequency
Explanation : Transmission Frequency is the rate in hertz at which a radio transmitter repeats a signal pattern. It is also a code number that the wireless service company assigns to represent a single frequency or set of frequencies.
 
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Tech Word for Today
 Word : thrival
 Explanation : Beyond survival is the idea of thriving or prospering in the new millennium. In addition to survival
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