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(1) If there is an IP phone capable of sending SIP messages, what will it be called
SIP Registrar 2Marks
SIP Redirect Server
SIP User Agent
SIP Proxy Server
Sip UA
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(2) Which of the following is a problem only in Packet Switched networks and not in circuit switched
networks?
Latency 2Marks
Jitter
None of the given options is correct
Voice quality degradation due to digital to analog conversion
Jitter
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(3) Which of the following is true for MGCP
None of the options 3Marks
It supports binary encoding of its messages
It is used for communication between the Media Gateway and Media Gateway Controller
It is a master-slave protocol
It is used for communication between the Media Gateway and Media Gateway Controller
It is a master-slave protocol
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(4) Intelligent Peripheral (IP) manages specific resources, such as
SSP 2Marks
STP
SCP
Announcements, Speech recognition, Protocol conversions
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Announcements, Speech recognition, Protocol conversions
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(5) In GSM which element hold the Secret Keys
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SIM 2Marks
HLR
AUC and SIM
AUC
Auc and sim
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(6) Having two separate units of MS, ME and SIM, provides
Terminal mobility 2Marks
CLI facility
Roaming Facility
SIM Mobility
Terminal Mobility
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(7) Which of the following are some of the benefits of using a signaling gateway
When using signaling gateways there is no need to disrupt the existing SS7 network and future
enhancement transparent 2Marks
All of the given options
No need for further expensive investments in the legacy signaling elements
Signaling transport over IP network doesn't demand the physical E1/T1 links. Using new
technologies like IP over fiber, for example, can achieve much higher throughput
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all the options
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(8) One of the statements about BCSM is incorrect
Has two parts - originating call model and terminating call model 2Marks
All triggers in any call in an SSP are dynamically set by the SCP
Represents an abstract view of a call from beginning to end (off hook; dialling; answer; no
answer; busy; hang up etc).
As each state is traversed, the exchange encounters Detection Points (DPs) at which the SSP
may invoke a query to the SCP to wait for further instructions on how to proceed.
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All triggers in any call in an SSP are dynamically set by the SCP
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(9) Which one is not a SNMP primitive?
Trap 2Marks
M-get
Set request
Get request
m-get
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(10) Which of the following network is used to connect end users?
Access Network 2Marks
None of the given options
Distribution Network
Core Network
Access Network
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(11) To say that a network is intelligent means that it is _______
controlled by microships that are easily intechanged 2Marks
able to make decisions on its own
able to bridge the gap between user and supplier needs
controlled by software on distributed computers
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able to make decisions on its own
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(12) All signaling associated with call setup and tear down, database query and response, and SS7
network management takes place using
MSUs 2Marks
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None of the given options
FISUs
LSSUs
msu
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(13) Which logical function in SIP handles routing of messages
User Agents 2Marks
Redirect Servers
Proxy servers
Registrars
Proxy servers
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(14) GSM utiize
TDMA only 2Marks
FDMA only
CDMA only
FDMA and TDMA Both
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FDMA and TDMA Both
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(15) Function(s) of Manager is(are)
Receive response from agents 2Marks
Send directives to agents
All of the options are correct
Query agents
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All of the options are correct
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(16) Which layer 4 protocol is used by VOIP for voice or bearer transmission
WTCP because it works better for wireless channels 2Marks
SCTP because it supports multistreaming
TCP because it provides reliable transport
UDP because TCP is not suited for real time applications
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UDP because TCP is not suited for real time applications
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(17) The primary function of RTCP is to provide feedback on the quality of service being provided by
RTP
True 1Marks
False
Not Answer
true
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(18) A service control point (SCP) is ________________
an instance in time at which the network selects a serice to initiate 2Marks
a database for various IN services
a series of triggers that initiate controller actions
a switch that is controlled by the intelligent network
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a database for various IN services
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(19) Indian telecom network is divided into a number of
TAX (Trunk Automatic Exchange) 2Marks
LDCAs
SDCAs
exchanges
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TAX
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(20) Core Network provides following functionality
Mobility Management 3Marks
All of the given options
Radio Resource Management
Call Handling
Mobility
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Call Handling
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(21) Consider the following problem:
Alice has the following public URI [email protected] regardless of her current location. At
office, her SIP URI is sip:[email protected] and at the university her URI is
sip:[email protected]. Whether she is in the office or university , I can still initiate a session
towards her with the Id [email protected]. Which of the following network element in SIP
makes this possible?
SIP User Agent Client 2Marks
SIP Registrar
SIP Redirect Server
SIP User Agent Server
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SIP Registrar
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(22) Which SIP message is used to initiate a session
Initiate 2Marks
Invite
Initial Address Message
Create Connection
Invite
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(23) Trunk interface signaling is from
subscriber to network 2Marks
none of the given options
subscriber to subscriber
within network
within network
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(24) Normally, each LDCA has a Long Distance Charging Centre (LDCC), which is a
Transit switch 2Marks
none of the options
Integrated Local cum tandem exchange
TAX (Trunk Automatic Exchange)
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Integrated Local cum tandem exchange
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(25) Which of the following technologies use common channel signaling scheme
None of the options 2Marks
SS7
IP
DTMF
ss7
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(26) Multiplexing is used to _______
None of the options 2Marks
Shift frequency spectrum of the baseband signal
Distribute communication resources among users
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Separate information for various users from a single frame
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Distribute communication resources among users
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(27) The development of the intelligent network places increased emphasis on a consistent
____________
call model 2Marks
intelligence model
switch model
network model
call model
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(28) Which one is not type of NM system
Distributed 2Marks
Centralised
Hierarchy
Layered
Layered
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(29) Subscriber is in idle mode and he moves from one cell to another cell which belongs to another
PLMN this is termed as
Roaming 2Marks
Inter Cell HandOver
Inter BSC HandOver
Inter MSC HandOver
Roaming
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(30) Idle, seizure, answer, metering are examples of
Register signals 2Marks
Line signals
none of the given options is correct
tones and announcements
Line signals
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(31) The first generation Cellular systems were
digital 2Marks
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analog
none of the given options is correct
Mix of analog and digital
analog
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(32) Which of the following present the challenges faced by voice on packet switched networks
Packets may arrive out of sequence 3Marks
None of the options is correct
Bandwidth is wasted as it cannot be used for any other purpose
Congestion can occur at every packet as there is no dedicated route
Packets may arrive out of sequence
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Congestion can occur at every packet as there is no dedicated route
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(33) The SCCP supports
No load sharing among SCPs 3Marks
none of the given options
Global title translation
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routing to subsystems
Global title translation
routing to subsystems
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(34) Network Management functionality in MTP3 consists of
Signaling Route Management 3Marks
No Signaling Link Management
none of the given options
Signaling Traffic Management
Signaling Route Management
Signaling Traffic Management
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(35) FCAPS stands for
Failure, Configuration, Acounting, Performance and Safety management 2Marks
Failure, Configuration, Acounting, Performance and Security management
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Fault, Configuration, Authentication, Performance and Security management
Fault, Configuration, Acounting, Performance and Security management
Fault, Configuration, Acounting, Performance and Security management
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(36) Basic service area unit in Cellular mobile Networks is known as
All of the given options 2Marks
Cell
Routing Area
Location Area
Cell
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(37) MTP2 provides
reliable transfer of signaling messages between two directly connected signaling points over
the signaling link in uniform length signaling units 2Marks
none of the given options
a sequenced connectionless service to transfer information from origination point code to the
destination point code via SS7 network
reliable transfer of signaling messages between two directly connected signaling points over
the signaling link in variable length signaling units
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reliable transfer of signaling messages between two directly connected signaling points over the
signaling link in uniform length signaling units 2Marks
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(38) VLR/HLR tracks the location of MS upto a
MSC Area 2Marks
Location Area
BSC Area
Cell
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BSC Area
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(39) Which of the following statements are true?
Datagram networks ensure reliable delivery 2Marks
Virtual Circuit networks ensure reliable data delivery
None of the given options
Packet-Switched networks ensure reliable data delivery
Virtual Circuit networks ensure reliable data delivery
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(40) In European Digital Carrier, E1=
24 x DS0 plus framing 2Marks
30 x DS0 plus framing
62 x DS0 + 2 x 64kbps for signaling
30 x DS0 + 2 x 64kbps for signaling
30 x DS0 + 2 x 64kbps for signaling
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(41) EIR HOLD
TMSI 2Marks
All of the given options
IMSI
IMEI
IMEI
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(42) A central office switch that connects end offices together and does not deal directly with the
customer/end-user is called
end office switch 2Marks
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access switch
none of the options
tandem switch
tandem switch
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(43) VOIP makes use of which of the following methods to transmit voice
Packet Switched 2Marks
None of the given options
Virtual Circuit Switched
Circuit Switched
Packet Switched
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(44) Which of the options are true for Circuit Switching Technology
It can support variable data rate 3Marks
It can support only fixed data rate
For every call, Addressing Information passes through the network more than once
Connection Establishment takes place prior to any data transfer
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Connection Establishment takes place prior to any data transfer
It can support only fixed data rate
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(45) Suppose signal power received at your mobile antenna is 10 mW and the SNR is 10 dBm, what is
the noise power?
10 mW 2Marks
1 pW
1 W
1 mW
1MW
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(46) Two channels will be available to MS for a small duration in
Soft Handover 2Marks
Hard handover
Intra Cell Handover
Inter Cell Handover
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Intra Cell Handover
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(47) MIB is a database at
Managed entity 2Marks
Manager
All of the options are correct
Client
Managed entity
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(48) If a signal is band-limited to 8 kHz by anti-aliasing filter, what would be minimum sampling rate
for such a signal
16 kHz 2Marks
32 kHz
4 kHz
8KHz
16 khz
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(49) To make BER very low, SNR should be
As low as possible 2Marks
As high as possible
Depends on the communication system under consideration
Zero
?? should me high
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(50) Modulated signal is also known as
Carrier Signal 2Marks
Message Signal
Pass-band signal
Baseband Signal