Explanation : A fourth generation (programming)
language (4GL) is a grouping of
programming languages that attempt to
get closer than 3GLs to human language,
form of thinking and conceptualization.
Fourth generation languages are commonly
used in database programming and scripts
examples include Perl, PHP, Python, Ruby,
and SQL. Structured Query Language (SQL)
is a standard computer language for
relational database management and data
manipulation. SQL is used to query, insert,
update and modify data.
Explanation : Biosphere reserves are areas comprising
terrestrial, marine and coastal ecosystems.
Each reserve promotes solutions reconciling
the conservation of biodiversity with its
sustainable use. These are nominated by
national goveroments and remain under the
sovereigu jurisdiction of the states where
they are located.
Explanation : Sniffing is a process of monitoring and
capturing all data packets passing through
given network. Sniffers are used by
network/system administrator to monitor
and troubleshoot network traffic. Sniffing
technique is used by network professionals
to diagnose network issues, and by
malicious users to capture unencrypted
data, like passwords and usernames.