ENP Study Exam QUESTIONS AND
CORRECT ANSWERS
Master Street Address Guide - CORRECT ANSWER MSAG
Selective Routing
ANI
ALI - CORRECT ANSWER Enhanced 911 has what 3 features
One Nation, One Number - CORRECT ANSWER Nena Motto
Emergency Service Zones - Agency response area determined by address ESN's are within ESZ areas
- CORRECT ANSWER ESZ
Assigned to addresses or cell towers within an Emergency Service Zone - CORRECT ANSWER
ESN
the wireless equivalent of a Central Office - CORRECT ANSWER MSC
a generic term for a phone number that is used for 911 routing - CORRECT ANSWER Psuedo
ANI
Non-callpath Associated Signaling - the PSAP sends back a query requesting the CB number -
CORRECT ANSWER NCAS
Controlled by the ESN service area; allows one-button transfer to agencies that support that location
in that ESN. Transfer of a call to police, fire, ems with one-button - CORRECT ANSWER
Selective Transfer
Basically a transfer to a fixed number that doesn't change such as Poison Control - CORRECT
ANSWER Fixed Transfer
, Secondary PSAP - accomplished by a switch, or a busy signal on 9-1-1, or damaged equipment
resulting in 911 failure - CORRECT ANSWER Alternative Routing
From one geographic area to another such as from RSO PSAP to San Bernardino PSAP. Can be in the
same Tandum or to another switch entirely - CORRECT ANSWER Router to Router Transfer
Emergency Services Internet Protocol Network - includes the network but not the NGCS NG911 Core
Services - CORRECT ANSWER ESINet
provides spacial routing to the correct PSAP. Maps a pathway for a 911 call to move from server to
server within the ESINet to the correct PSAP. Utilizes a URI Uniform Resource Identifier to route the
call to the appropriate PSAP - CORRECT ANSWER ECRF
routes call to the next hop routing based on location and 911 policy. Determines the next hop on the
map from the ECRF to the next server. The terminating ESRP routes the call to the call taker. -
CORRECT ANSWER ESRP
Location Validation Function - validates a civic address against GIS data - CORRECT ANSWER
LVF
Next Gen Core Services - Includs the ESRP, ECRF, and LVF, IP Services, core services but not the
network - CORRECT ANSWER NGCS
provides location endpoints (calling device) GIS Info and PSAP Boundaries. Requires and endpoint
unique identifier such as an IP address or a MAC address. *Verifies an address in a voice call for
routing purposes. - CORRECT ANSWER LIS
converts an analog or legacy type call to IP format to be delivered to NextGen equipment -
CORRECT ANSWER LNG
converts an IP call back to analog for legacy PSAPS that do not have NextGEN equipment -
CORRECT ANSWER LPG
The Master Street Address Guide is a listing of all street names and address ranges
CORRECT ANSWERS
Master Street Address Guide - CORRECT ANSWER MSAG
Selective Routing
ANI
ALI - CORRECT ANSWER Enhanced 911 has what 3 features
One Nation, One Number - CORRECT ANSWER Nena Motto
Emergency Service Zones - Agency response area determined by address ESN's are within ESZ areas
- CORRECT ANSWER ESZ
Assigned to addresses or cell towers within an Emergency Service Zone - CORRECT ANSWER
ESN
the wireless equivalent of a Central Office - CORRECT ANSWER MSC
a generic term for a phone number that is used for 911 routing - CORRECT ANSWER Psuedo
ANI
Non-callpath Associated Signaling - the PSAP sends back a query requesting the CB number -
CORRECT ANSWER NCAS
Controlled by the ESN service area; allows one-button transfer to agencies that support that location
in that ESN. Transfer of a call to police, fire, ems with one-button - CORRECT ANSWER
Selective Transfer
Basically a transfer to a fixed number that doesn't change such as Poison Control - CORRECT
ANSWER Fixed Transfer
, Secondary PSAP - accomplished by a switch, or a busy signal on 9-1-1, or damaged equipment
resulting in 911 failure - CORRECT ANSWER Alternative Routing
From one geographic area to another such as from RSO PSAP to San Bernardino PSAP. Can be in the
same Tandum or to another switch entirely - CORRECT ANSWER Router to Router Transfer
Emergency Services Internet Protocol Network - includes the network but not the NGCS NG911 Core
Services - CORRECT ANSWER ESINet
provides spacial routing to the correct PSAP. Maps a pathway for a 911 call to move from server to
server within the ESINet to the correct PSAP. Utilizes a URI Uniform Resource Identifier to route the
call to the appropriate PSAP - CORRECT ANSWER ECRF
routes call to the next hop routing based on location and 911 policy. Determines the next hop on the
map from the ECRF to the next server. The terminating ESRP routes the call to the call taker. -
CORRECT ANSWER ESRP
Location Validation Function - validates a civic address against GIS data - CORRECT ANSWER
LVF
Next Gen Core Services - Includs the ESRP, ECRF, and LVF, IP Services, core services but not the
network - CORRECT ANSWER NGCS
provides location endpoints (calling device) GIS Info and PSAP Boundaries. Requires and endpoint
unique identifier such as an IP address or a MAC address. *Verifies an address in a voice call for
routing purposes. - CORRECT ANSWER LIS
converts an analog or legacy type call to IP format to be delivered to NextGen equipment -
CORRECT ANSWER LNG
converts an IP call back to analog for legacy PSAPS that do not have NextGEN equipment -
CORRECT ANSWER LPG
The Master Street Address Guide is a listing of all street names and address ranges
