Exam (elaborations)
IFT WIRELESS EXAM
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IFT WIRELESS EXAM...
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IFT WIRELESS EXAMWhen first introduced, cellular networks were a revolutionary
development in data communications - ANSWER True
A Handoff (or handover) changes the routing of an ongoing voice call
from one cell to another - ANSWER True
The SIM card enables international roaming independent of mobile
equipment - ANSWER True
A correlation function equals 1 if the two codes are identical - ANSWER
True
GSM networks used circuit switch telephony initially - ANSWER True
A correlation function equals 1 if the two codes have nothing in common
- ANSWER False
The evolved packet core uses circuit-switched connectivity - ANSWER
False
In LTE, mobile devices can be assigned multiple IP addresses -
ANSWER True
In LTE, ciphering of RRC messages is mandatory - ANSWER False
During SIP registration an IPsec tunnel is established between the UE
and P-CSCF - ANSWER True
Session initiation Protocol, SIP us a generic protocol used for
establishment of a connection between two or more parties - ANSWER
True
End to end service is completely controlled by LTE - ANSWER False
, Select the characteristics of the visited location register - ANSWER One
VLR can support multiple MSCs
Has some permanent mobile station data
How many generations of cellular standards were developed by to arrive
at the modern day standard - ANSWER 5
Authentication ensures your ______________ and ________________
for a registered user - ANSWER IMEI; SIM
In the UMTS Channel structure, what is the role of the transport
channel? - ANSWER Prepare data packets that are received from
logical channels for transmission over air interface
What is the role of the Random Access Channel (RACH) ? - ANSWER
Device used to send RRC connection request messages from mobile
device to network
Bidirectional logical CCCH on uplink transport layer
The Serving GPRS Support Node (SGSN) PMM detached occurs when
the __________________ - ANSWER Mobile device is switched off and
location unknown. No assigned IP address
In LTE, how many types of carrier aggregation are there? - ANSWER 4
In LTE, how long does it take to transmit seven symbols of a resource
block? - ANSWER 0.5 ms
What are the advantages of network-based scheduling? - ANSWER
Network can react to changing radio conditions of each user and
optimize throughput
Network can ensure the QOS for each user
Overload situations easier to address
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