1.In PPP , when the user enters user@xyz.com. What does 'xyz.com' used for?

Service Descriminator

2.During a SGSN shutdown , how does the UE know to reattach?

RNC detects it and sends reattach request to UE

3.Radius can be used for Link control....

To get ip address.

4.Which of the features affect SGSN Service downtime?

SGSN pool

5.Which feature affects the capacity of SGSN apart from hardware?

3GDT (not sure)

6.mnc is used in which of the following ?

IMSI, APN

7.Who takes the decision of enabling 3gdt?

SGSN

8.Which type of card performs IP -Sec ?

GGSN-U/ Routing Engine / MS PIC/ ASE Card

10.Which of these is true?

a. RA smaller than LA.

b. RA bigger than LA.

c. RA is smaller than or equal to LA.

d. RA is bigger than or equal to LA.

12.If APN-AMBR is less than the current data rate, then where are packets dropped?

PGW

14Which nodes are part of SACC solution?

SAPC and SASN

15GGSN and SASN can transfer classified data like (IMSI and MSISDN) to third party HTTP servers through?

HTTP Header enrichment

16Which 3 nodes can enforce MBR in downlink in EPC?

Enb, SGW, PGW

17If IP Packets exceed transmission rate then?

Set ECE flag and send signal for flow to slow down

18. In GSM which node initiate detach?

HLR,SGSN,MS

21. Where we store Ik?

SGSN

22. If we have to generate frequently partial CDR?

Less volume limit, Less Time Limit

23. GTP -u Payload on which card?

Line card

24. For dual stack IP address allocation?

DHCPV4

25. If tiem expires and UE do RAU then which nodes are used?

Sgsn and RNC tunnel is established,

RNC update PDP request

26. Where to use Heuristic algo?

Service detection,URL detection

27. Functioning of BRAS?

Fixed convergence, benefits of customers

28. IP addressing?

PGW,HLR

29. IPV6 ?

Router advertisement

30. SGW change is triggered by N/w entity?

HSS,MME,PGW

31.If I activate a VPLMN in PDP context then HLR supports 3GDT ,If UE does TAU,What action would

be taken?

Establish tunnel,send update to...

STP ports state:

blocking, listening,learning,forwarding

RSTP port state:

discarding,learning,forwarding

33. Which factor affect MME capacity

a. MME handover

b. 3GDT

c.Traffic model

d.Dual stack

34. Ericsson SGSN-MME part

a.SCB

b.SC

c.Device processor

d.NCB

e.AP

35. Which interface uses GTP

a.s10

b.s6a

c.s11

d.s5

e.S1-MME

36. IPSec Tunnel at which part

a. Rf

b. ASE card

c.MS/Ic

d. GGSN-U

37. function of radius

a.negotiate MRU size for PPP link

b.for Authentication

c.To assign IP address

d. To negotiate TCP window.

38. Which of these contins MNC

a. IMSI

b.APN

c.MSISDN

d.IMEI

39. What is the APN format

a.service.mcc240.mnc001.gprs

b.service.mnc001.mcc240.gprs

c.service.gprc

d.service.mnc001.mcc240.org

40. What is the usage of MSISDN

a. To send SMS to UE

b. Identification in RAU

c. Find HLR to UE

d. Identify the terminal type

41. What msg is used to transfer IMEI

a.Identity response

b.Attach accept

c.SGSN context request

d. Update location Acknowledge

42. Policy server for both and fixed network

a. SASN

b.SAPC

c.HLR

d.GGSN

43. which interfaec is used for WLAN access towards PGW

a. SGSN over Gn interfaces

b. RNC over S12

c.SGW over S5

d.ePDG over S2b

44. Which identifier is used by SGSN to find old SGSN

a. old RAI

b.IMSi

c.APN

d. MSISDN

45. SGSN connected over Gs interfaces

a. AAA server

b.GGSN

c.MSC

d.MME

46. Which node including intra SGSN – SRNS Reallocation (any two)

a. BSC

b.SGSN

c.RNC

d.HLR

47. In Lte Which node are included in attach procedure MME using DNS server (any two)

a. PGW

b. SGW

c. MGW

d. HSS

48. Which n/w node decrypt WCDMA PS From UE

a. RNC

b. RBS(BTS)

c. SGSN

d. GGSN

49. When new Enb with new TA is attaching to n/w So which has to be configured.

a. add Enb IP to MME

b. add SGW IP to enb

c. add TA in SGW

d. add TA in DNS

50. UE in PMM -IDLE state and which has one PDP context active then what is the procedure to send

payload to be performed by the UE

a. Service Request

b. Attach

c. Notify PDP context

d. RAU

51. Nodes in TAU to be changed

a. MME

b. PGW

c. SGW

d.. ENB

e. HSS

52. What are the parameters of QCI(any three)

a. maximum number of retransmissions

b. Error lost Rate

c. Packet Priority

d. MTU

e. Packet delivery

53. SLAAC is configuration of IPV6 which one we have to used

a. Users Arp

b. Users Broadcast

c. user router advertisement

d.DHCPV6 to signal

54. Which encrypt password over network

a.SFTP

b.FTP

c.RCP

d.SCP

55. Area of O&M Works

a. Fault management

b. Session management

c.Performance management

d.Mobility Management

e.Configuration management

56. We have to transport alarm from SGSn and GGSN to OSC-RC Which one protocol is used

a. SNMP

b. HTTP

c. LDAP

d. TFIP

57. Find network part of 140.20.25.1/20

a. 140.20.16.

b.140.20.

c.140.20.25.

d.140.20.0.

58. Gx interface functionality::

a. Transmit user account in /from OCS to PCRF

b. Authentication transmit from PCRF to GGSN

c. provision and remove PCC rule from SGSN

59. Update location msg send from

a. Visited SGSN and HHLR

b. VSGSN and VHLR

c. HHLR and HSGSN

d. HSGSN and VHLR

60. Who is responsible to buffer downlink data packet when UE is in idel mode

a. PGW

b.SGW

c.Enb

d.MME

61. An operator wants to reduce SGSN service time (any one)

a. APN

b. 3GDT

c. SGSN pool

d. SRNS Relocation

62. Gx interface Parameters(any 3)

a. location information

b. UE identification

c. Monitoring Queue data in charge

d. No of rejected PDP Context

e. Consume data for identification service

63. Which node used to make decision tunnel for 3GDT

a. SGSN

b. HLR

c. GGSN

d. MME

64. What is the BRAS functionality

a. PPPOE session switching

b. user credential Verification

c. IP address allocation

d. SLA enforcement

e. PPP session organization

65. PDN gw Functionality(any 3)

a. per user based Packet Filtering

b. lawful intercept

c. IP address allocation

d. Idle Mode Down-link packet Buffering

e. sending down-link Data notification to MME

66. What is the functionality of PPPOE

a. provides subscription

b. Transfer of PPP packet over broadband n/w

c. Used for IP assignment

d. Common b/w Dslam and BRAS

67. what is the GGSN functionality (any 3)

a. Handle UE Connected towards external n/w

b. Forward SNS based on IMSI

c. IP allocation

d. Block UE represent ion as stolen based on IMEI

e. Blocks or allows UE traffic to UE based on service.

68. Why are dedicated bearers are being used

a. to give different flows separated QOS handling

b. TO separate out malicious traffic

c. To separate traffic that to be charged differently

d. To improve end to end TCP performance

69. Which msg is sent form SGSN to GGSN when UE sents active PDP context Request

a. Packet flow context request

b. Update PDP context Request

c. Create PDP context request

d. Radio access bearer Request

70. what is IP can session::

a. 1 PDN connections

b. 1 Secondary PDP context

c. 1 virtual Circuit

d. 1 dedicated bearer

71. Which infrastructure is used for APN lookup

a. DNS

b. SNMPv3

c. AAA

d. LDAP

72. IP connection b/w GGSN and PDN routing choice from Gi interface (3)

a. EIGRP

b.static

c. BGP

d. IS-IS

e. IMSI

73. Find the TEID value for U-payload sent uplink by UE/MS when two PDP context Are active

a. All have same value

b. 2 PDP context have different TEID

c. TEID increment for each payload

d. First uplink have TEID value =0

74. In WCDMA Select 3 nodes when UE perform PDP context Activation

a. MSC

b. GGSN

c. SGSN

d. HLR

e. RNC

75. Which element signalled over the U-plane

a. IPV6 interface ID

b.IPV4 DNS address

c. IPV6 prefix

d.IPV4 Address

76. SACC is performed on which 2 nodes

(in case of policy enforcement, GGSN-MPG & SASN) (in case of charging enforcement SAPC & SASN)

a. GGSN-MPG

b. SAPC

c. SASN

d. SGSN

77. Which interface downlink MBR in EPC(any 3)

a. PCRF

b. PGW

c. MME

d. SGW

e. Enb

78. Select charging interfaces for solution (any 3)

a. Gy

b. GTP-prime

c.S6a

d. Gx

e.Gz

79. Which 2 nodes allocates Ip address for UE/MS

a. SGSN

b. HLR

c. GGSN

d. RNC

80. During SGSN shutdown how does UE know to reattaches

Ans: RNC detects it and send reattach request

81.Upon which platform SAPC 2010A is based

a. TSP

b.Sun fire

c.CPP – mobile and fixed

d.EBS

82. Which two are identified by TEID

a. RAB

b. PDP Context

c. Default APN

d. SCTP connections

83. Which identifier contain Cell id

a. LAC

b. RAC

c. CSG-ID

d. CGI

84. How tracking area list is handled

a. TAL consist in MME

b. TAL consist in HSS and sent to MME

c. TAL is per-configured in MME

d. TAL contained by UE and sent to MME

85. What is achieved by wildcard APN

a. PCRF to specify APN

b. HLR to specify APN

c. UE to specify the APN

d. GGSN to specify the APN

86. How can APN can be used

a. SGW can find PGW

b. SGSN find GGSN

c. MME find HSS

d. MME find PGW

87. Which node assign P-TMSI

a. MME

b. SGSN

c. UE

d. HLR

88. What are the 2 benefits of fixed/mobile convergence from user point of view

a. PDN connection handover between LTE & WLAN access

b. internet across when going abroad

c. connecting to a service will be handled by an equivalent policy for both fixed and mobile access

d. Ability to use voice over IP mobile access and over fixed access.

89. Which 3 node may initiate detach in GSM/WCDMA

a. HLR

b. GGSN

c. MS/UE

d. SGSN

e. BSC

90. A WCDMA UE /MS performing a PDP context activation (3 nodes)

a. SGSN

b. RNC

c. MSC

d. HLR

e. GGSN

91. Which type of infrastructure is used in 3gpp n/w for APN lookup

a. AAA

b. LDAP

c. DNS

d.SNMPV3

92. On which 3 triggress is it possible to configure charging in GGSN

a. Volume

b. Time

c. Events

d. Bandwidth

e. Packet delivered

93. which node decrypt the payload encrypt by the UE in LTE n/w (any 3)

a. ENODEB

b. SGW

c. PGW

94. An operator wants to reduce the SGSn service downtime which ericsson SGSN-MME feature would be

a candidate for implementation in the n/w

a. SRNS reallocaion

b. 3GDT

c. APN relocation

d. SGSN pool

95. Which two interface use Diameter

a.S6a

b.S4

c. SGs

d.S13

96. Which 2 interface uses MAP

a. Gr

b. Gs

c. Gf

d. Gx

97. two Authentication methods used by PPP

a. Diameter

b. PAP

c. TACACS

d. CHAP

98. A operator has pool of SGSN for WCDMA one SGSN in the pool is shut down what happens

a. All Ues attached to any SGSN in the pool must reattaches

b. All UE attached to the failing SGSN must reattaches

c. The RNC is broadcast to the Ue's that the SGSN has failed

d. RNC detect that 1 SGSN has failed.

99. Which 3 nodes have direct interface with a PGW as defind in 3GPP EPC??

SGW, SAPC

100. what are the 3 function of SGW in 3GPP EPC architecture

a. IP address allocation

b. Idle mode downlink packet buffering

c. lawfull intercepr

d. Per used packet filtering

e.Acc for charging.

101. Which OSI layer n/w is required both end points of PPPoe Session

a.Layer2

b. layer 3

c. layer 4

d. layer 5

102. Which protocol is used on the interface both SAPC and BRAS in a fixed access implementation

a. GTP

b. Radius

c. TCAP

d. MAP

103. You are helping a customer with designing their mobile packet core n/w site solution to get information

a. From CPI

b. From mobile backhaul

c. from mobile PBN solution

d. From IP RAN solution

104. Which 2 must be configured in the SGSN-MME prior to autoconfiguration of the S1-MME interfaces

a. SNMP agent

b. IP Services

c. Permanent virtual circuit

d. SCTP end points

105. which 2 interfaces in SGSN-MME are partially automatic configured by signalling from the per node

a.Gb/Ip

b. Gr

c.S1-MME

d. Iu-C

106. How many traffic class are being used in diffserv??

64

107. Which node store IK/K in WCDMA???

SGSN

108. IN WCDMA what identity is send in attach procedure?

P-TIMSI, IMSI, Old-RAI

109. 10.255.3.25/24 wants to send packet on 10.255.3.2 what action us required?

Packet is being sent to the default gateway

110. SAPC 2010 A is based on which platform?

TSP (If SASN - SUNFIRE)

111. PDNG and BRAS can be configured in which Ericsson node??

CPG

112. Which 2 protocol uses MAP in GSM??

Gr & Gr

113. WCDMA PDP context activation??

GGSN, SGSN, RNC