ENP Exam QUESTIONS AND CORRECT
ANSWERS
BCF (Border Control Function) - CORRECT ANSWER Provides a secure entry into the
ESInet for emergency calls presented to the network. Incorporates firewall, admission control, and
may include anchoring of session and media as well as other security mechanisms to prevent
deliberate or malicious attacks on PSAPs or other entities connected to the ESInet.
Transport Facility - CORRECT ANSWER An analog or digital circuit that connects switches
and/or networks together. In this document, this refers to a digital trunk that carries calls between
either the carrier network and the SR, or the SR and the PSAP.
Landline - CORRECT ANSWER Colloquial term for the Public Switched Telephone Network
access via an actual copper or fiber optic transmission line that travels underground or on telephone
poles. Used to differentiate the "wireless" connectivity of a cellular or PCS system.
Microwave - CORRECT ANSWER Provides a way of transmitting telephone, facsimile, video,
and data conversations using electromagnetic waves in the radio spectrum above 8990 Megahertz and
below 20 Gigahertz. Line of sight travels up to 30 miles
Selective Transfer - CORRECT ANSWER The capability to transfer a 9-1-1 call to a response
agency by operation of one of several buttons typically designed for police, fire, EMS; based on the
ESN of the caller
Satellite - CORRECT ANSWER Are in geosynchronous orbit at 22,300 miles above the
equator. Signals can be sent and received by stationary dish antenna.
Fiber Optics - CORRECT ANSWER A technology in which light is transmitted through thin
filaments of glass. Light is turned off and on billions of times per second to represent binary signals.
Next Generation 911 - CORRECT ANSWER Replace existing narrowband, circuit-switched
networks,
which can only carry voice signals and very limited data, with new
Internet Protocol-based networks that can carry a much wider range of data.
,FirstNet (First Responder Network Authority) - CORRECT ANSWER New, nationwide, public
safety wireless communications network established by Congress in 2012, which in late 2017 is
becoming
operational.
Public Safety Answering Point - CORRECT ANSWER An agency or group of agencies
designated and authorized to receive and respond to emergency calls requiring one or more public
services.
Very High Frequency (VHF) - CORRECT ANSWER Low band for public safety includes the
range 30 to 300 MHz.
Ultra High Frequency (UHF) - CORRECT ANSWER Frequency Range 300 to 3000 MHz
Trunk - CORRECT ANSWER Typically, a communication path between central office
switches, or between the 9-1-1 Control Office and the PSAP.
Central Offices - CORRECT ANSWER Provide trunk to trunk switching and usually do not
connect directly to the customer
Conventional Mobile System - CORRECT ANSWER Channel Switching is manually
controlled by the user
Trunked Radio System - CORRECT ANSWER Channel switching is controlled by sofware
Simulcast System - CORRECT ANSWER System that transmits the message over more than
one transmitter on the same frequency.
Simplex System - CORRECT ANSWER System that is a basic radio system that transmits and
receives on the same frequency.
Repeater System - CORRECT ANSWER Provides a greater coverage for portable and mobile
users to "hear" other users a greater distance away (more than 25 miles)
, Local Access and Transport Area (LATA) - CORRECT ANSWER Geographic area within
which a local Telecommunications Service Provider may offer either local or long distance service.
Local Exchange - CORRECT ANSWER Service area provided by and end office.
Geographical area in which charges and services are uniform.
Local Loop - CORRECT ANSWER Wires that run from the subscriber's PBX, telephone, or
key telephone system back to the serving central office.
ABANDONED CALL - CORRECT ANSWER A call placed to 9-1-1 in which the caller
disconnects before the call can be answered by the telecommunicator.
ALI - CORRECT ANSWER Provides street address information and dispatch
information associated with the caller's Directory Number (DN) to be displayed at the
answering PSAP.
ANI - CORRECT ANSWER allows the Directory Number (DN) of the calling station
(i.e., phone) to be automatically forwarded to the PSAP and displayed.
Telecommunications Act of 1996 - CORRECT ANSWER Act's stated objective was to open up
markets to competition by removing regulatory barriers to entry: "to provide for a pro-competitive,
de-regulatory national policy framework designed to accelerate rapidly private sector deployment of
advanced information technologies and services to all Americans by opening all telecommunications
markets to competition. Foundational law
Wireless Communications and Public Safety Act of 1999 - CORRECT ANSWER Act directs
the FCC to make 911 the universal emergency number for wireline and wireless telephone service.
Enhance 911 Act of 2004 - CORRECT ANSWER Act established a National E9-1-1
implementation and Coordination Office (ICO) charged with coordinating and the implementation of
9-1-1 and E9-1-1 at the Federal, State, and local levels and administering a Federal PSAP grant
program
ANSWERS
BCF (Border Control Function) - CORRECT ANSWER Provides a secure entry into the
ESInet for emergency calls presented to the network. Incorporates firewall, admission control, and
may include anchoring of session and media as well as other security mechanisms to prevent
deliberate or malicious attacks on PSAPs or other entities connected to the ESInet.
Transport Facility - CORRECT ANSWER An analog or digital circuit that connects switches
and/or networks together. In this document, this refers to a digital trunk that carries calls between
either the carrier network and the SR, or the SR and the PSAP.
Landline - CORRECT ANSWER Colloquial term for the Public Switched Telephone Network
access via an actual copper or fiber optic transmission line that travels underground or on telephone
poles. Used to differentiate the "wireless" connectivity of a cellular or PCS system.
Microwave - CORRECT ANSWER Provides a way of transmitting telephone, facsimile, video,
and data conversations using electromagnetic waves in the radio spectrum above 8990 Megahertz and
below 20 Gigahertz. Line of sight travels up to 30 miles
Selective Transfer - CORRECT ANSWER The capability to transfer a 9-1-1 call to a response
agency by operation of one of several buttons typically designed for police, fire, EMS; based on the
ESN of the caller
Satellite - CORRECT ANSWER Are in geosynchronous orbit at 22,300 miles above the
equator. Signals can be sent and received by stationary dish antenna.
Fiber Optics - CORRECT ANSWER A technology in which light is transmitted through thin
filaments of glass. Light is turned off and on billions of times per second to represent binary signals.
Next Generation 911 - CORRECT ANSWER Replace existing narrowband, circuit-switched
networks,
which can only carry voice signals and very limited data, with new
Internet Protocol-based networks that can carry a much wider range of data.
,FirstNet (First Responder Network Authority) - CORRECT ANSWER New, nationwide, public
safety wireless communications network established by Congress in 2012, which in late 2017 is
becoming
operational.
Public Safety Answering Point - CORRECT ANSWER An agency or group of agencies
designated and authorized to receive and respond to emergency calls requiring one or more public
services.
Very High Frequency (VHF) - CORRECT ANSWER Low band for public safety includes the
range 30 to 300 MHz.
Ultra High Frequency (UHF) - CORRECT ANSWER Frequency Range 300 to 3000 MHz
Trunk - CORRECT ANSWER Typically, a communication path between central office
switches, or between the 9-1-1 Control Office and the PSAP.
Central Offices - CORRECT ANSWER Provide trunk to trunk switching and usually do not
connect directly to the customer
Conventional Mobile System - CORRECT ANSWER Channel Switching is manually
controlled by the user
Trunked Radio System - CORRECT ANSWER Channel switching is controlled by sofware
Simulcast System - CORRECT ANSWER System that transmits the message over more than
one transmitter on the same frequency.
Simplex System - CORRECT ANSWER System that is a basic radio system that transmits and
receives on the same frequency.
Repeater System - CORRECT ANSWER Provides a greater coverage for portable and mobile
users to "hear" other users a greater distance away (more than 25 miles)
, Local Access and Transport Area (LATA) - CORRECT ANSWER Geographic area within
which a local Telecommunications Service Provider may offer either local or long distance service.
Local Exchange - CORRECT ANSWER Service area provided by and end office.
Geographical area in which charges and services are uniform.
Local Loop - CORRECT ANSWER Wires that run from the subscriber's PBX, telephone, or
key telephone system back to the serving central office.
ABANDONED CALL - CORRECT ANSWER A call placed to 9-1-1 in which the caller
disconnects before the call can be answered by the telecommunicator.
ALI - CORRECT ANSWER Provides street address information and dispatch
information associated with the caller's Directory Number (DN) to be displayed at the
answering PSAP.
ANI - CORRECT ANSWER allows the Directory Number (DN) of the calling station
(i.e., phone) to be automatically forwarded to the PSAP and displayed.
Telecommunications Act of 1996 - CORRECT ANSWER Act's stated objective was to open up
markets to competition by removing regulatory barriers to entry: "to provide for a pro-competitive,
de-regulatory national policy framework designed to accelerate rapidly private sector deployment of
advanced information technologies and services to all Americans by opening all telecommunications
markets to competition. Foundational law
Wireless Communications and Public Safety Act of 1999 - CORRECT ANSWER Act directs
the FCC to make 911 the universal emergency number for wireline and wireless telephone service.
Enhance 911 Act of 2004 - CORRECT ANSWER Act established a National E9-1-1
implementation and Coordination Office (ICO) charged with coordinating and the implementation of
9-1-1 and E9-1-1 at the Federal, State, and local levels and administering a Federal PSAP grant
program
