Questions
- 1. 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
- 2. 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 Functioning of BRAS? Fixed convergence, benefits of customers 28. IP addressing? PGW,HLR 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
- 3. 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
- 4. 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
- 5. 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
- 6. 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.
- 7. 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
- 8. 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
- 9. 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
- 10. 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
- 11. 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
- 12. 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.
- 13. 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?
- 14. 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