5G AND VoNR

Question 1

5G is IMT standard _________
1) IMT-2000
2) IMT-Advanced
3) IMT2020

Answer 1

IMT2020

Question 2

spectrum efficiency unit
1) Mbits/s/m2
2) bits/s/m2
3) bits/s/Hz
4) Mbits/s/Hz

Answer 2

bits/s/Hz

Question 3

Area Traffic Capacity unit
1) Mbits/s/m2
2) bits/s/m2
3) bits/s/Hz
4) Mbits/s/Hz

Answer 3

Mbits/s/m2

Question 4

5G Phase-1
1) does not meet all the IMT2020
requirements
2) meets all the IMT2020
requirements

Answer 4

does not meet all the IMT2020
requirements

Question 5

The 5G access network is broken down into a collection of ________ Areas
1) Location areas
2) Tracking areas

Answer 5

Tracking area
identified with a TAI (Tracking Area Identity)

Question 6

TAI stands for
1) Traffic Area Identity
2) Tracking Area Identity

Answer 6

Tracking Area Identity

Question 7

In Dual connectivity (DC), Master RAN Node
1) controls secondary RAN Node
2) maintains a control connection with the core network
3) share a data plane connection with secondary for media splitting
4) all the above

Answer 7

all the above

Question 8

5G RAN nodes could be
1) A traditional 4G eNB which connects to EPC
2) 4G ng-eNB
3) A 5G gNB
4) all the above

Answer 8

all the above

Question 9

_____ connects to the 5G core network
1) 4G eNB
2) 4G ng-eNB

Answer 9

4G ng-eNB

Question 10

Bearer splitting can be done by
1) Master RAN node
2) Secondary RAN node
3) Both

Answer 10

Both

Question 11

​​World radiocommunication conferences (WRC) are held
1) every year
2) every three to four years

Answer 11

every three to four years

Question 12

it is the job of ___________ to review and revise the Radio Regulations, the international treaty governing the use of the radio-frequency spectrum and the geostationary-satellite and non-geostationary-satellite orbits

Answer 12

World Radiocommunication Conferences (WRC)

Question 13

last WRC (ITU World Radiocommunication Conference) held is
1) WRC-20
2) WRC-23

Answer 13

WRC-23 at Dubai UAE

Question 14

multiple access technique used in 5G
1) CP-OFDM
2) CQ-OFDM
3) C-OFDM

Answer 14

CP-OFDM (Cyclic Prefix – Orthogonal
Frequency Division Multiplexing)

Question 15

CP-OFDM stands for

Answer 15

Cyclic Prefix – Orthogonal
Frequency Division Multiplexing

Question 16

5G can use up to
1) 64 QAM
2) 128 QAM
3) 256 QAM
4) 512 QAM

Answer 16

256 QAM

Question 17

C-RAN stands for

Answer 17

Cloud RAN

Question 18

This will house much of the processing capability that would normally be found at the gNB
1) C-RAN centralized node
2) C-RAN distributed node

Answer 18

C-RAN centralized node

Question 19

This would house the radio transmit/receive capability only
1) C-RAN centralized node
2) C-RAN distributed node

Answer 19

C-RAN distributed node

Question 20

Cloud RAN adopts virtualization techniques (T/F)

Answer 20

T

Question 21

choose correct item(s)
non-standalone implementation
1) gNodeB connects to the mobile via an eNodeB
2) eNodeB connects to the mobile via an gNodeB
3) gNodeB connects to the 5G core via an ng-eNodeB
4) ng-eNodeB connects to the 5G core via an gNodeB

Answer 21

1 and 3
gNodeB connects to the mobile via an eNodeB
gNodeB connects to the 5G core via an ng-eNodeB

Question 22

non-standalone implementation
1) Uses EPC
2) does not use EPC

Answer 22

uses EPC (Evolved Packet Core)

Question 23

Within the core, _______ is utilized to provide a highly scalable, adaptive network architecture.
1) SMF
2) UDM
3) NFV
4) gNodeB

Answer 23

NFV (Network Functions Virtualization)

Question 24

in 5G core, AMF stands for

Answer 24

Access and Mobility Management

Question 25

in 5G core, SMF stands for

Answer 25

Session Management Function

Question 26

in 5G core, UPF stands for

Answer 26

User plane function

Question 27

in 5G core, UDM stands for

Answer 27

Unified Data Management

Question 28

in 5G core, PCF stands for

Answer 28

Policy Control Function

Question 29

in 5G core, AUSF stands for

Answer 29

Authentication Server Function

Question 30

___ PDU Session(s) is/are established per Data Network for a given device. Within a PDU Session, _____ QoS Flows 1) one, one 2) one, many 3) many, one 4) many, many

Answer 30

2) one PDU Session, many QoS flows

Question 31

Within a PDU Session, for voice services, separate QoS Flows may be established to handle the differing transport requirements of _________ 1) signalling 2) voice 3) both 4) none

Answer 31

signalling and voice

Question 32

Within a PDU Session, for internet services, _____ QoS flow(s) may be required. 1) one 2) many

Answer 32

only one QoS Flow is required which provides Best Effort service

Question 33

_______ play a key role in the device registration process (including security), as well as track the device’s mobility for reachability and paging purposes 1) UPF 2) AMF 3) SMF 4) UDM

Answer 33

AMF Access and Mobility Management

Question 34

_________ manages the PDU sessions associated with an individual subscriber 1) UPF 2) AMF 3) SMF 4) UDM

Answer 34

SMF Session Management Function

Question 35

_____ is responsible for allocating a suitable IP address to the device (IPv4 or IPv6), assuming an IP PDU Session is active 1) UPF 2) AMF 3) SMF 4) PCF

Answer 35

SMF Session Management Function

Question 36

________is the only network element within the core that is involved with user plane traffic 1) UPF 2) AMF 3) SMF 4) PCF

Answer 36

UPF User Plane Function

Question 37

_______ will routinely interact with the PCF to determine exactly which Data Networks the device is allowed to connect to, as well as the QoS profile it can expect to be allocated 1) UPF 2) AMF 3) SMF 4) PCF

Answer 37

SMF Session Management Function

Question 38

_______ is responsible for ensuring data is placed on the correct downlink QoS flow, as well as ensuring that any dynamic policy rules are suitably enforced 1) UPF 2) AMF 3) SMF 4) PCF

Answer 38

UPF User Plane Function (policy rules are provided by the PCF via the SMF) PCF: Policy Control Function SMF: Session Management Function

Question 39

policy rules are provided by the PCF via the _____ 1) UPF 2) AMF 3) SMF 4) PCF

Answer 39

SMF Session Management Function

Question 40

The ___is essentially a central repository of subscriber information which can be used by several different network elements. 1) UPF 2) AMF 3) SMF 4) UDM

Answer 40

UDM Unified Data Management includes access restrictions, mobility restrictions, Data Network QoS profiles and roaming permissions

Question 41

PCF dynamic policy decisions are based on 1) congestion 2) subscriber geolocation 3) billing 4) all

Answer 41

all

Question 42

PCF can 1) establish correct QoS 2) terminate a PDU session 3) both 4) none

Answer 42

both Data Network can also potentially provide session level information, such as the subscriber wishing to make a call or view a video. In all of these scenarios, the PCF can dynamically change the way in which the subscriber receives their service, from establishing the correct QoS Flows in the network to completely terminating a PDU Session.

Question 43

A key element of the NFV concept is MANO which stands for ________

Answer 43

Management and Orchestration NFV (Network Functions Virtualization)

Question 44

all network slice instances would use the ________ AMF that has been assigned to the subscriber 1) same 2) its own

Answer 44

same AMF

Question 45

devices on separate network slices will be considered to be on ______ 1) completely separate networks 2) same network

Answer 45

completely separate networks

Question 46

_______ is the voice service enabler that uses the 5G core 1) IMS 2) AMF

Answer 46

IMS (IP Multimedia Subsystem) Voice Over NR network Architecture consist of 5G RAN, 5G Core and IMS network

Question 47

IMS stands for

Answer 47

IP Multimedia Subsystem

Question 48

VoNR uses QoS Flow with ______ to transfer the speech packets after connection establishment 1) 5QI= 1 2) 5QI= 5

Answer 48

5QI= 1 is GBR (GBR:Guaranteed Bit Rate)

Question 49

VoNR uses a QoS Flow with _____ for SIP signaling messages 1) 5QI= 1 2) 5QI= 5

Answer 49

5QI= 5 is non-GBR (GBR:Guaranteed Bit Rate)

Question 50

3GPP has recommended _______ codecs for 5G 1) EVC 2) EPC 3) EVS 4) EVS

Answer 50

EVS (Enhanced Voice Services)

Question 51

5G EVS codec sampling frequency 1) Narrowband 2) Wideband 3) Super Wideband 4) Full band

Answer 51

All can be used

Question 52

The Voice Traffic flow with _____ protocol over dedicated PDU session 1) FTP 2) RTP 3) SFTP 4) HTTP

Answer 52

RTP protocol Real Time Transport Protocol. RTP must be used with UDP. It is very sensitive to packet delays and less sensitive to packet loss.

Question 53

Voice Over NR network Architecture supports Service based interface using ____ protocol.

Answer 53

HTTP protocol

Question 54

5G Reference Point Archhitecture is 1) Standalone (SA) 2) Non Standalone (NSA)

Answer 54

Standalone (SA) (NSA is Service Based Archhitecture)

Question 55

5G Service Based Archhitecture is 1) Standalone (SA) 2) Non Standalone (NSA)

Answer 55

Non Standalone (NSA) (SA is Reference Point Archhitecture)