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Glossary

Term Description
MongoDB Shell An interactive JavaScript interface to MongoDB, used to query
FOR ONLINE READING ONLY
and interact with the database. Glossary

BSON Binary JSON, a binary-encoded serialization of JSON-like
documents, used by MongoDB to store data.
Aggregation A way of processing data in a collection by passing it through a
pipeline of operations.
Example: Grouping students by major and counting the number
of students in each major:
db.students.aggregate([
{$group: {“_id”: “$major”, “count”: {$sum: 1}}}
]);
eNodeB The eNodeB, or Evolved Node B, is the hardware responsible
for establishing the connection between mobile devices and the
network in LTE (Long Term Evolution) and LTE-Advanced
networks, which are part of the 4G wireless communication
standard. Acting as a crucial component within the LTE network
architecture, the eNodeB undertakes essential functions,
including managing radio resources, compressing IP headers,
encrypting data, and handling mobility management.

IS-95 Standard for CDMA Networks: IS-95, also known as cdmaOne,
is a 2G mobile telecommunications standard that utilizes Code
Division Multiple Access (CDMA) technology. Developed
by Qualcomm and standardized in the early 1990s, IS-95
enables multiple users to share the same frequency spectrum
simultaneously through unique spreading codes. It supports
features like soft handoff, power control, and operates in the 800
MHz and 1900 MHz frequency bands with a 1.25 MHz channel
bandwidth. The standard laid the foundation for advanced CDMA
technologies, leading to higher network capacity, improved call
quality, and efficient spectrum utilization, ultimately evolving
into CDMA2000 for 3G networks.
S1-AP S1-AP (S1 Application Protocol): S1-AP is a protocol used in
(S1 Application LTE (Long-Term Evolution) networks to manage the signaling
Protocol) between the evolved NodeB (eNodeB) and the Mobility

525
Student’s Book Form Five Tanzania Institute of Education (TIE)

Computer Science Form 5.indd 525 23/07/2024 12:35