ࡱ> UWRST[ bjbj 4ΐΐ%8"$^r7M M M 7Йu8u8u8M u8M u8u8 YpN(b0rП/ ПYПY^Nu8 77 8jM M M M П : E2-E3 CFA CORE SUBJECT The overall objective of Project Dosti is to reduce decline in BSNLs PCO Business. Most commonly used Medium access technique for Star & Bus topologies is CSMA with CD. Ethernet Media is passive and power is taken from computer. [True] In CSMA/CD, if collision is detected during transmission, a jamming signal is transmitted so that stations can know about collision and cease transmission. FCS stands for Frame Check Sequence. MAC address is 48 bit long. LLC stands for Logical Link Control. SMTP stands for Simple Mail Transfer Protocol. FTP stands for File Transfer Protocol. TCP stands for Transmission Control Protocol. UDP stands for User Datagram Protocol. Internet Protocol provides best effort delivery. [True] Integrity of packets is guaranteed in IPV4 through checksums. Datagram consists of Header and Data. Default TTL for the IP is 64. TCP/IP Protocol suite is made up of 5 layers. The two protocols in Transport Layer are TCP and UDP. The market share of PCOs in BSNL is about 30%. Ethernet uses CSMA/CD to regulate the traffic. Ethernet media is passive. The spec for Ethernet is IEEE 802.3 The layer used for communication between two hosts is Application Layer. Encapsulation of application layer data is done by the transport layer. The two protocols used by transport layer are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Integrity of packets is guaranteed in IPV4 through checksums. Default TTL for the IP is 64. ICMP is used to report the error message back to the source. Flow control is the process of managing the rate of data transmission between two nodes to prevent a fast sender from outrunning a slow receiver. As each gateway processes the datagram, it decrements TTL by one. The two parts of an IP address are the Host Part and the Network Part. TCP stands for Transmission Control Protocol. UDP stands for User Datagram Protocol. ICMP stands for Internet Control Message Protocol. IGMP stands for Internet Group Management Protocol. IP address version 4 is 32 bits long. 255.0.0.0 is the default subnet mask of Class A address. 255.255.0.0 is the default subnet mask of Class B Address. 255.255.255.0 is the default subnet mask of Class C Address. The address size of IPV6 is 128 bits or 16 octets. What is the class of each of the following addresses? a) 10011101 10001111 11111100 11001111 Class B b) 11011101 10001111 11111100 11001111 Class C c) 01111011 10001111 11111100 11001111 Class A d) 11101011 10001111 11111100 11001111 Class D e) 11110101 10001111 11111100 11001111 Class E Find the class of each addresses. a. 4.23.145.90 Class A b. 227.34.78.7 Class D c. 246.7.3.8 Class E d. 29.6.8.4 Class A e. 198.76.9.23 Class C In routing what does the term SHORTEST mean? The term Shortest mean the combination of many factors including shortest, cheapest , fastest most reliable and so on. What are the fields present in IP address? Netid and Hostid. Netid portion of the ip address that identifies the network. Hostid portion of the ip address that identifies the host or router on the networks. The four layers of TCP/IP are:- Application Layer Transport Layer Internet Layer Network Interface Layer All the above Correct answer is e) all the above. The core protocols of the Transport Layer are TCP and UDP. TCP provides a one to one, connection oriented and reliable communication service. UDP provides a one to many, connectionless and unreliable communication service. The most widely used application layer protocols are:- HTTP FTP SMTP Telnet All the above Correct answer is e) all the above. 49.DNS stands for Domain Name System. 50. DNS is used to resolve a host name to an IP address. 51. Checksum is a simple mathematical computation used to verify the integrity of the IP header. 52. MAC stands for Media Access Control. 53. A TCP connection is established through a three way handshake. 54. Domain Name Servers convert a DNS address into an IP address. 55. Each Machine (Host) in the internet is identified by a 32 bit IP address. 56. Identify the class of the given IP address. 4.5.6.7 Answer Class A 57.Identify the class of the given IP address. 229.1.2.3 Answer Class D 58. Identify the class of the given IP address. 191.1.2.3 Answer Class C 59. Identify the following IP address 169.5.0.0 a) Host IP address b) Direct Broadcast address c) Limited Broadcast address d) Network address Correct answer is d) Network address 60 . Identify the following IP address 169.5.1.1 a) Host IP address b) Direct Broadcast address c) Limited Broadcast address d) Network address Correct answer is a) Host IP address 61 . Identify the following IP address 169.5.255.255 a) Host IP address b) Direct Broadcast address c) Limited Broadcast address d) Network address Correct answer is b) Direct Broadcast address 62. A device has two IP addresses. The device could be A) A computer B) A router c) A gateway d) Any of the above Correct answer is d) 63. A host with an IP address of 142.5.0.1 needs to test internal software. What is the destination address in the packet? a) 127.0.0.0 b) 127.1.1.1 c) 127.127.127.127 d) Any of the above Answer d) Any of the above. 64. A packet sent from a node 198.123.46.20 to a node at 198.123.46.21 requires a ------------- destination address. A) Unicast B) Multicast C) Broadcast D) a or b A) Unicast address 65. An IP address specifies the location of a host or client in the internet. 66. An IP address is also known as Protocol address. 67. The IPV4 address is 32 bits long. 68. In IPV4, classes A, B and C are used to represent host and network addresses whereas class D is used for Multicasting. 69. Class E is reserved for experimental purpose. 70. All 0s in the host id indicates the network itself. 71. All 1s in the host id indicates the broadcast address. 72.What is an IP address? An IP address is a 32 - bit address that uniquely and universally define the connection of a host or a router to the Internet. The sender must know the IP address of the destination computer before sending a packet. 73. What are the categories of IP addresses? IP addresses were divided into five categories as follows. Class A Class B Class C Class D Class E 74. Discuss the class field in IP address. If the address is given in binary notation, the first few bits can tell us the class of the address. Class A - 0 Class B - 10 Class C - 110 Class D - 1110 Class E 1111 75. What is the class of each of the following addresses? a. 10011101 10001111 11111100 11001111 Class B b. 11011101 10001111 11111100 11001111 Class C c. 01111011 10001111 11111100 11001111 Class A d. 11101011 10001111 11111100 11001111 Class D e. 11110101 10001111 11111100 11001111 Class E 76. Find the class of each addresses. a. 4.23.145.90 Class A b. 227.34.78.7 Class D c. 246.7.3.8 Class E d. 29.6.8.4 Class A e. 198.76.9.23 Class C 77. What are the fields present in IP address? Netid and Hostid. Netid portion of the ip address that identifies the network. Hostid portion of the ip address that identifies the host or router on the networks. 78. Identify the class and default subnet mask of the IP address 217.65.10.7 IP address 217.65.10.7 Belongs to class C address and Default subnet mask is 255.255.255.0. 79. Discuss the class field in IP address. If the address is given in binary notation, the first few bits can tell us the class of the address. Class A - 0 Class B - 10 Class C - 110 Class D - 1110 Class E - 1111 When the address is given in dotted decimal notation, then look at the first byte to determine the class of the address.. Class A - 0 to 127 Class B 128 to 191 Class C 192 to 223 Class D 224 to 239 Class E 240 to 255 80. What is a hostid and netid? Netid The portion of the IP address that identifies the network called the netid. Hostid The portion of the IP address that identifies the host or router on the network is called the hostid. 81. What is flow control? How to keep a fast sender from swamping a slow receiver with data is called flow control. 82. What is the time to live field in IP header? Time to live field is counter used to limit packet lifetimes counts in second and default value is 255 sec. 83. What is address resolution? Address resolution is a process of obtaining the physical address of a computer based on its IP address, in order to be able to finally actually transmit the frame or datagrams over the network to which the node belongs. 84. What are the benefits of subnetting a network? 1. Reduced network traffic 2. Optimized network performance 3. Simplified network management 4. Facilities spanning large geographical distance. 5. All the above Correct answer is 5. 85. What are the services provided by transport layer protocol? a. End to End delivery b. Addressing c. Reliable delivery d. Flow control e. Multiplexing 86. Do TCP,UDP or both compute RTT? TCP does; UDP does not 87. List the flag used in TCP header? TCP header contains six flags. They are URG, ACK, PSH, RST, SYN and FIN. 88. What is a port? Applications running on different hosts communicate with TCP with the help of a concept called as ports. A port is a 16 bit unique number allocated to a particular application. 89. Explain how the TCP provides the reliability? A number of mechanisms provide the reliability. 1. Checksum 2. Duplicate data detection 3. Retransmission 4. Sequencing 5. Timers 90. Give some examples of application where UDP is preferred over TCP. 1. In multicasting 2. Route update protocol in RIP 91. Which of these can be a valid MAC address: 10.10.0.1/16 192.168.2.3/16 23-A2-43-C3-43 C4-E4-44-A3-0A-03 92.Which of these is reserved for Private Networks? a) 10.0.0.0/8 b) 172.16.0.0/12 c) 192.168.0.0/16 d) all of these 93. Class D IP address is reserved for a) Multicasting b) Unicasting c) Both d) None 66. An IP address is a) 32 bit binary address b) implemented in software c)Uniquely and globally defines a host or a router in the internet 94. Each internet address consists of 4 bytes ( 32 bits) defining two parts namely netid and host id. 95. In classes A, B and C, if the host id is all 1s, the address is called a Direct Broadcast Address. 96. Direct Broadcast Address is used by a router to send a packet to all hosts in a network. 97. If an IP address is composed of all 0s, it means This Host on this Network. 98. A host address which does not know its IP address uses the IP address 0.0.0.0 as the source address and 255.255.255.255 as the destination address to send a message to a Bootstrap server. 99. The IP address with the first byte equal to 127 is used for Loop Back address, which is used to test the software on a machine. 100. Communication on the internet can be achieved by using: a) Unicast Address b) Multicast Address c) Broadcast Address d) Above all. Correct answer is d) 101. When a packet is sent from an individual source to an individual destination, a Unicast Communication takes place. 102. When a packet is sent from an individual source to a group of destinations, a Multicast Communication takes place. 103. IP is responsible for moving packet of data from node to node. [True] 104. TCP is responsible for:- a) Data Concurrency b) Packet sequencing c) Delivery Guarantee d) Error Control e) Retransmission f) All the above Correct answer is f) all the above. 105.If the data package comes from the UDP protocol, it is called a datagram. 106. TCP provides a) Connection oriented b) Reliable Data delivery c) Duplicate data suppression d) Congestion control e) Flow Control f) All the above Correct answer is f) all the above. 107. UDP provides a) Connectionless b)Unreliable c) Best effort service d) All the above Correct answer is d) 108. ICMP sends query and error reporting messages 109. ICMP is a mechanism used by hosts and gateways to send notification of datagram problems back to the sender. 110.IGMP is used to facilitate the simultaneous transmission of a message to a group of recipients. 111. Network interface layer is also called as the Link layer Data Link layer. 112. IP is defined in RFC 791. [True] 113. Current IP software version is 4. [True] 114.UDP is defined in RFC 768. [True] 115. UDP contains the fields a) Source port b) Destination port c) Length d) Checksum e) All the above Correct answer is e) all the above. 116. NIB-II, Project 1 provides MPLS based IP Infrastructure. 117. NIB-II, Project 2.2 provides Broadband Access. 118. A1 city routers are fully meshed between locations on STM-16 link. 119. B1 and B2 cities have only EDGE routers. 120. A1 locations have been provided with CISCO 12416 routers. 121. 480 Ports and above DSLAMs have Gigabit Ethernet Interface for uplinking the data. 122. A BRAS a) Terminates the customer session b) Authenticates c) Allots IP address d) Keeps track of user information for billing e) All the above Correct answer is e) all the above. 123. Customer data base like user name and password are stored in LDAP. 124. WICE stands for Window for Information, Communication & Entertainment. 125. The RI of core is 1% more than that of the cladding. 126. The phenomenon of Total Internal Reflection of Light is used in OF communications. 127. Based on the mode of propagation, fibres can be classified into Single Mode Fibre (SM) and Multi Mode Fibre(MM). 128. Based on Index, fibres can be classified as Step index (SI)and Graded Index (GRIN) fibres. 129. The first window lies in the range of 800 to 900 nm. 130. The first window is suitable for short distance communication. 131. Third window (1500 nm- C band) is suitable for DWDM/DWDM applications. 132. Conventional C band range is 1530nm to 1565 nm. 133. Two types of attenuation are intrinsic and extrinsic. 134. Spreading of light pulses or pulse widening is called dispersion. 135. Three types of dispersion are Modal, Material and Waveguide. 136. OTDR is used for measuring FiberLoss. SpliceLoss. Connector Loss. Fibre Length Continuity of fibre Fault localization All the above Correct answer g) all the above. 137. ONU is located at the customer premises. 138. The two leading optical distribution networks for splitting are Active Optical Network (AON) and Passive Optical Network (PON). 139. An AON can handle upto 1000 customers. 140. PON is a point to multipoint, Fibre to the Premises Network Architecture. 141. A PON configuration with 1:32 splitters reduces the amount of fibre. 142. The Optical Line Terminal (OLT) equipment is installed in the Central Office as head end. 143. The Optical Network Terminal (ONT) is installed at the customer premises. 144. Maximum distance is 20 km in between OLT and ONT for 1:32 splitter. 145. The GEPON network does not support redundancy as such single fibre and single input splitters are planned. 146. There are 20 PON ports per GEPON chassis and each chassis can cater for 640 customers. 147. 1:32 split architecture shall be used in the highly dense locations multi storied buildings. 148. CDR project covers the customer care and billing for a) Landline b) Broadband c) CDMA d) Leasedline f) Above all Correct answer is f) above all. 149. The Electronic Stapling software has been installed at a) Hyderabad b) Pune c) Bangalore d) None of the above Correct answer is a) Hyderabad. 150. Each Aggregation Router in SSA shall be connected over STM-1 link to the nearest MPLS Node. 151. Domain Name System (DNS) is used to resolve URL to IP address and vice versa. 152. Proxy server restricts and controls outgoing/incoming traffic . 153. Networking is required for sharing a) hardware resources b) software resources c) information/database d) communication- chatting, email etc e) all the above Correct answer is e) all the above. 154. Type of computer networks include a) Local Area Network b) Metropolitan Area Network c) Wide Area Network d) all the above Correct answer is d) all the above. 155. All computers on the internet communicate with one another using the Transmission Control Protocol/Internet Protocol (TCP/IP) suite. 156. Computers on the internet use a Client-Server architecture. 157. Data Terminal Equipments (DTE) include a) PCs b) Servers c) Printers d) All the above Correct answer is d) all the above. 158. Data Communication Equipments (DCE) include a) Hubs b) Modems c) Switches d) Routers e) Gateways f) All the above Correct answer is f) all the above. 159. Network Interface Card (NIC ) links the DTE and DCE. 160. System Software includes Operating System Device Drivers Utilities All the above Correct answer is d) all the above. 161. Examples of Network Operating System are MS Windows Server Unix Linux Sun-Solaris All the above Correct answer is e) all the above. 162. Nowadays we have digital exchanges which work on circuit switching principle. 163. Data networks use the principle of Packet Switching. 164. E10B was the first digital electronic exchange to be inducted in the network. 165. The main limitation of E10B was that it did not support CCS7 signalling and ISDN services. 166. All NT exchanges support a) CCS 7 b) ISDN c) V5.2 d) Centrex facility e) all the above Correct answer is e) all the above. 167. In the BSNL network, about 40% of the total switching capacity is on CDOT technology. 168. ISDN Basic Rate Access has two channels of 64 Kbps each for speech and data. 169. In Basic Rate Access, the speed of signaling channel is 16 Kbps. 170. ISDN Primary Rate Access has 30 channels of 64 kbps each for speech and data. 171. In Primary rate access, the speed of signaling channel is 64 Kbps. 172. ISDN offers a data transmission speed of 64 kbps. 173. In CAS, Ts 16 is used to carry the signaling information related to the 30 voice data channels. 174. Functional Level 2 of CCS 7 carries out a) Error correction b) Error detection c) Error monitoring d) all the above Correct answer is d) all the above 175. VRLA battery works on the principle of Constant Voltage Charging. 176. For VRLA batteries, the voltage is set at 2.23 V per cell and total float voltage is 53.5 V. 177. Battery capacity is always measured in Ampere. 178. The life of a VRLA battery is 4 years upto 200 AH & 5 years above 200 AH. 179. Life of static and SMPS power plant is 15 years. 180. The most commonly used earthing systems include a) Spike electrodes b) Plate electrodes c) Strip electrodes 181. The internet access code for sancharnet is 172233, from any city in India. 182. The uniform All India ISDN access code is 172225. 183. Broadband services offer speed from 256 Kbps to 8 Mbps. 184. For video conferencing facility the software PVX can be downloaded from BSNLs Video Conferencing Portal. 185. BER (Bit Error Rate) is measured by using variable attenuator. 186. OTDR is useful for checking 1. Fiber loss 2. Splice loss 3. Connector loss 4. Fiber length 5. Continuity of fiber 6. Fault localization 7. All the above. Correct answer is 7) all the above. 187. A1 city core routers are fully meshed between locations on .. link. STM 16 STM 1 STM 4 Correct answer is a) STM 16 188. B1 and B2 cities have only CORE EDGE PE None of the above Correct answer is b) EDGE 189. 480 Port and above capacity DSLAMs will have .. port for uplink traffic. FE GE None Correct answer is b) GE 190. A BRAS in the Broadband Network Terminates customer session Authenticates Allots IP address Keeps track of user session for billing alongwith RADIUS All the above. Correct answer is e) all the above 191. LDAP stores User name Pass word Default services All the above Correct answer is d) all the above. 192. Broadband Network core components include BBRAS Tier 1 Switch Tier 2 Switch Access components/DLAM/CPE All the above Correct answer is e) all the above. 193. Core components of Broadband Multiplay include BNG RPR OCLAN All the above Correct answer is d) all the above. 194. IPTV viewers have full control over Rewind Fast forward Pause All the above Correct answer is d) all the above 195. DISPERSION [Spreading of light pulses] types are:- a)MODAL, b)MATERIAL, c)WAVEGUIDE d) All the above Correct answer is d) All the above 196. Non Dispersion Shifted fibres are suitable for TDM DWDM FDM None of the above Correct answer is b) DWDM 197. Applications of optical attenuators are:- To Simulate the Regenerator Hop Loss at the FDF. To Provide Local LoopBack for Testing. C)To measure the BitError Rate by varying theOptical Signal at the Receiver Input. d)All the above Correct answer is d) all the above 198. The objective of project Udaan is to improve ___________________________ a) Mobile Business, b) PCO s Business, c) Land line and Broadband Business, d) New business. 199. The objective of project Dosti is to improve ____________________________ a) Mobile Business, b) PCO s Business, c) Land line and Broadband Business, d) New business. 200. The overall team structure of project Udaan consist of ___________________ a) Product, Pricing, Analytic team b) Sales and alliance team c) Customer service team d) All above 201. In project Udaan special teams are constituted to focus on _______________ a) Customer segmentation b) Product/pricing design c) Customer service process d) All above 202. The various channels of customer services are at _______________________ a) Customer service center b) Land line and broadband call centers c) CO, SMS and websites d) All above 203. With ever increasing usage of internet and massive copper network of BSNL only ______________approach is required. a) Internal selling b) External selling c) Push selling d) Pull selling 204. . _______________will play a key role in generating leads for landline and broadband connections a) Customer service b) Customer requirement c) Customer satisfaction d) All above 205. Project Udaan is the part of the project _______________________________ a) Vijay b) Sikhar c) Sanchay d) Kuber 206 Project Udaan will provide the customer with option to opt for ______________ a) e.mail b) e.ticketing c) e.bill d) None of these 207 In Project Dosti, types of PCO s in BSNL are __________________________ a) Landline PCO, CCB PCO b) GSM PCO, WLL PCO or CDMA PCO c) FLPP PCO & IN PCO d) All the above 208. The software developed by IT cell Pune, for Project Udaan is known as Wings software 209. Ethernet basebond architecture a) uses bus technology b) usually transmits at 10 Mbps c) relies on CSMA/CD to regulate traffic on the main cable setment d) above all 210. Ethernet use cable types a) Thicknet b) Thinnet c) UTP d) All above 211. Ethernet is a Passive media which means ____________________________ a) Does not require power for working, b) Draws the power required from the computer, c) Does not draw any power from the computer, d) All of the above are correct. 212. Ethernet architecture is __________________________________________ a) Baseband, b) Broadband, c) Thinband, d) All of the above 213. CSMA/CD stands for______________________________________________ a) Carrier sense multiple access/collision detection, b) Courier smart mail access/ carried detection, c) Copper sensed multi access/ carrier detection, d) Copper signal message access/ copper detection 214. Frame check sequence (FCS) is a 32 bit cyclic redundancy check based on all fields of the frame except____________________________________________ a) Preamble b) Preamble and start frame delimiter, c) Preamble, start frame delimiter and frame check sequence itself, d) None of above 215. Time To Live (an 8 bit field) of Internet protocol header is used for_____________________________________________________________ a) Representing a count set by originator which is decremented by one at every router, b) Protocol identification purpose, c) Error detection purpose, d) All of the above 216. When the code Bit ACK=1 in TCO segment __________________ a) It means beginning of urgent information. b) It means beginning of Heder of the next TCP segment . c) It means the acknoledgement number is valid and TCP segment is carrying the acknoledgement otherwise not. d) None of the above. 217. The IP address 156.26.30.60 is represented in ___________________ a)Binary form of 32-bits. b)Dotted decimal notation format c) Cyclic redundancy check format d) None of the above 218. Identify the class of IP address given 131.23.34.2 a) Class A b) Class B c) Class C d) Class D 219. Supernetting concept is used in IP addressing because_____________ a) Classify system of allocating IP addresses can be very wasteful b) To avoid tiny percentage of the allocated class A and class B address space usage out of total alloted pool. c) Classful subnet masks extension for consecutive subnet has become possible d) All of above 220. . The default subnet mask for class B IP address is _______________ a) 255.0.0.0 b) 255.255.0.0 c) 255.255.255.0 d) 255.255.255.255 221. NIB-II has been implemented in._____________states Three Four c) Five. Two 222. .Primary Network Operating center at_______________________ Nagpur b) . Hyderabad c) Bangalore Pune 224. Disaster Recovery Network Operating center is at ___________________ Nagpur Hyderabad Bangalore Pune 225 .__________DSLAM, will be aggregated through Gigabit Ethernet Interface. 64 port 120 port 240 port 480 port 226. The ____________DSLAM will have two FE interface. 240 port 480 port 960 port 1000 port 227 .The SX or GBIC module in LAN Switch used for connecting Tier2 to Tier1 will support ______________. 100 kms 40km 70kms 80 kms 228.The FX or GBIC module in DSLAM and LAN switch should be capable of driving upto _____ on a single mode fibre. 10kms 40kms 50kms 80kms 229.There will be no BBRAS at ______________ a. A1 cities A2/A3 cities A4 cities B1 and B2 cities 230 In BB multiplay BNG behaves as customer edge router whereas BRAS was a PE Router. True False 231. BRAS were present at 23 "A" locations only whereas BNG is present upto "B type cities. True False 232. Optical fibers are composed of fine threads of glass in layers, called (a).core (b).Cladding (c) Conductor (d) a&b 233. First optical window is having central frequency of: a) 850 nm (b) 1550 nm (c) 1310 nm (d)1600 nm 234. Which fiber is designed specifically to meet the needs of DWDM application? (a) Dispersion shifted fiber (b) Non-dispersion-shifted fibre (c)Non-zero dispersion-shifted fibre (d) None of these. 235. While laying OFC, route indicators are to be placed every after: a)100meter b) 150meter c) 200meter (d) 500meter 236. In an OF communication Optical transmitter uses a) APD b) Diode c) LED /LASER d) None 237. The ___critical angle__is the maximum angle of incidence at which light stops being refracted and is instead totally reflected 238. The core has a __higher__ refractive index than the cladding 239. By using single mode fibre ___modal___dispersion is reduced. 240. For long distance OF communication _Single Mode____type of fibre is used. 241. This disparity between the times that the light rays arrive is called modal dispersion. 242. Decay of signal strength, or loss of light power, as the signal propagates through the fiber is known as_attenuation._ 243. For Fault Localizations/Break Fault in an OFC cable Optical Time Domain Reflecto_meter is used. 244. OLT is installed in ________________as head end. (i) Central Office (ii) Customer end (iii) inbetween (iv) All of above 245. ___ is used to terminate the signal at the customer premises. (i) ONT (ii) OLT (iii) PON (iv) All of above 246. Maximum distance between OLT & ONT can be upto _______ km(i) 10 (ii) 35 (iii) 20 (iv) 45 247. FTTH offers ________________. (i) Highbandwidth ii) Low cost iii) Flexibility iv) All the above 248. If the cabinet serve an area of less than 300 metres in radius, then it is called Fiber to the _________________ (i) Curb (ii) Network (iii) Home (iv) All of above    (iv) All of above 249. Active Optical Network used in FTTH works on point to _______topology. (i) Point (ii) multipoint (iii) random (iv) All of above 250. Downstream signal from OLT to ONT uses ____________technology. (i) TDMA (ii) FDM (iii) TDM (iv) FDMA 251. PON used by BSNL uses maximum split ratio of__________. (i) 1:16 (ii) 1:32 (iii) 1:64 (iv) 1:128 252. Downstream speed for GEPON is ______________- (i) 1Gb/s (ii) 2.5 Gb/s (iii) 622.08 Mb/s (iv) 155.52 Mb/s 253. GEPON having 20 PON ports per GEPON chassis can support maximum _________________customers. (i) 200 (ii) 320 (iii) 520 (iv) 640 254. PON is configured in full duplex mode in a single fiber point to multipoint (P2MP) topology. 255. The OLT (head end) allows only one subscriber at a time to transmit using the Time Division Multiplex Access (TDMA) protocol. 256. CDR project will cover the customer care and billing for the following services: a) Landline Broadband Leased line Above all Correct answer is d) above all 257. CRM stands for . a) Customer Relationship Management b) Customer Relation Management c) Customer Retention Management d) Customer Review Management Correct answer is a) Customer Relationship Management 258. In CDR project, payment management system is developed by .. for BSNL. a) TCS b) Wipro c) Cognizant Correct answer is a) TCS 259. In CDR, each exchange shall be connected to the Data Centre over ..end links and through the MPLS network. a) E1 b) STM I c) STM IV Correct answer is a ) E1 link 260. The entire CDR project is going to be implemented with____________ Data Centres. a. Four b. Five c. Six d. Eight 261. ______________is configured as the DR site for Kolkata in CDR Project. a. Bangalore b. Pune c. Hyderabad d. Chandigarh 262. ______________is configured as the DR site for Chandigarh in CDR Project a. Bangalore b. Pune c. Hyderabad d. Chandigarh 263. The South and East Zones are considered as____________. a. Project-I b. Project-II 264. North and West Zones are considered as the ___________ a. Project-I b. Project-II 265. The CDR project is going to replace all existing systems for Commercial, TRA, FRS and DQ. a. True b. False 266. The project will cover the customer care and billing for the following services. a. Landline b. Broadband c. CDMA d. Leased line e. All a, b, c & d 267. OYT connection shall be provided in CDR a. True b. False 268. The tariff in CDR System is based on MOU (Minutes of Usage) based system. a. True b. False 269. Each LE router is connected to the Aggregation Router through E1 links. a. True b. False 270. is a powerful computer runs on Network Operating System. a. Client b. Server c. Personal Computer 271..____________ is used to allocate IP address & configure other parameters like Gateway Address, DNS address, Alternate DNS address. a. DNS b. DHCP c. Proxy 272. ..controls & restricts outgoing & incoming traffic. a. Proxy b. Database c. Mail 273. sorts dispatches & delivers electronic mails. a. Proxy b. Database c. Mail 274. ..links Data Terminal Equipment & Data Communication Equipment. a. MODEM 1 b. NIC c. Router 275. . is physically a star topology but logically a Bus topology. a. HUB b. Switch c. Router 276. --------uses maximum available bandwidth a) HUB b) LAN Switches c). Router 277. .__________ is internetworking device which connected number of LANS. a. HUB b. LAN Switches c. Router 278.____________ is system software. a. Word Processor b. Multimedia c. Operating System [ correct answer is c) Operating System] 279.All NT exchanges support a)ISDN, b)C#7, c)V5.2, d) centrex facility e) All the above. 280. POI charges are prescribed by a) BSNL b) DOT C) TRAI Correct answer is c) TRAI 281.Which was the first digital electronic exchange inducted in BSNL. A. EWSD B. OCB-283 C. E10B D. AXE-10. 282.In BSNL the whole network is divided into how many circles. A. 22 B. 25 C. 24 D. 21 283.Initial code for BSNL fixed lines is. A. 3 B. 2 C. 6 D. 7. 284.D channel speed in case of BRA is A. 16 Kbps B. 64Kbps C. 2048 Kbps D. 128 Kbps. 285.The code for registration of abbreviated dialling is. A. 111 B. 110 C. 114 D. 115 286.For activation of call waiting, code is. A. 119 B. 118 C. 116 D. 115. 287. For activation of call transfer the code is A. 115 B. 114 C. 118 D. 110. 288. The code for CLI Announcement service is. A. 163 B. 165 C. 164 D. 161. 289. For reminder call service the code is. A. 161 B. 116 C. 165 D. 117. 290. V 5.2 connectivity is available in which switch. A. OCB-283 B. CDOT-MBM C. EWSD D. All of above. 291. There are three basic phases in a communication viz a) setup, b) conversation c) release. d) All the above. 292. CCS 7 stands for :- a) Common Channel System, b) Common Communication System c) Common Channel Signalling System d) All of the above 293. What are the two types of digital signaling ? a) CAS b) CCS c)both a and b d) none 294. Which of the levels of CCS7 is called Signalling data link ? a) level 1 b) level 2 c) level 3 d) level4 295. Transfer of messages reliably on an individual signaling link is the job of :- a) level 1 b)level 2 c)level 3 d) level4 296. Network Management and message handling is done by :- a) level 1 b) level 2 c)level 3 d) level 4 297. Which level of CCS7 is responsible for grouping of various user parts ? a) level 1 b) level 2 c)level 3 d) level 4 298. The two modes of digital signaling are :- a) Associated b) Quasi-associated c) both 1 and 2 d) none 299. What is true about SSTP? a)It handles only signaling traffic and not voice traffic. b) It is deployed in mated pairs. c) It is required for MNP and lawful message interception [ all are true] 300. SSTP stands for :- a) Super Signaling traffic point b). Standing signaling transfer point c) standalone signaling transfer Point 301. A Next Generation Network (NGN) is a ..network. packet-based circuit based none of the above 302. NGN is a layered architecture consisting of.. a) transport, b) access, c) control d) application layers e) All the above 303. NGN is capable of processing traffic originated from a) PSTN, b) GSM, c) CDMA, d) xDSL, e) WiMAX or any other access system f) All the above 304. MG stands for a) Mega Gateway b) Mother Gateway c) Media Gateway 305. Migration from PSTN to NGN involves: a) Replacement of TDM network elements in a phased manner b) Maximum reuse of existing resources c) Use of open and mature standards All the above 306. Media Gateway Controller is also known as .. Digital switch Soft Switch Analog switch None of the above 307. All the communication between MGC and MG is in H.248 protocol. HDLC protocol HDB3 protocol None of the above 308. The softswitch interacts with SCP through..using Intelligent Network Application Protocol (INAP). Signalling Gateways Media Gateways Internet Gateways 309. SIP stands for a) Session Initiation Protocol b) Session Intermittent Protocol c) Session Interval Protocol 310. In NGN, IMS means IP Multimedia Subsystem IP Multiple System IP Manipulated System 311. . Existing circuit switched network migration to NGN has following problems, a. slow to develop new features and capabilities b. expensive upgrade and operating costs c. proprietary vendor troubles d. all the above. 312. The Next Generation Network is a. non-packet based network [false] b. service related functions are independent of underlying transport related technologies [true] c. does not support generalized mobility ---[false] d. specified interfaces compliant. [ false] 313. European Telecommunication Standardization Institute (ETSI) defines the NGN as a. offers operators manage innovative services using open interfaces b. formal union of different layers into one layer c. based on switching platform d. based on ATM technology 314. In NGN the call control functionalities are related by a component which is called a. call server b. soft-switch c. media gateway controller d. all the above. 315. In NGN the switching and transport of the packets in NGN, backbone used is a. ATM network b. PSTN network c. IP / MPLS network d. Mobile network 316. The characteristics of NGN has following fundamental aspects, (i) Separation of control functions, (ii) decoupling of service provision from transport, (iii) Provision of open interfaces, and (iv) broadband capabilities with end to end QoS and transparency. a. Both (i) and (ii) are correct b. Only (iv) is correct. c. (i), (ii) and (iii) only are correct. d none of the above is correct. 317. The protocols used in NGN between soft-switch and media gateway are (i) H.248 , (ii) Megaco, (iii) MGCP, (iv) BICC, (v) Sigtrans, (vi) RTCP a. (i), (ii) and (iii) only b. (i), (ii) and (vI) only c. (v) and (vi) only d. (iv) and (v) only 318. The connectivity of IP TAX to IP/MPLS network is via nearest a. PE router of the NIB-II network b. CE router c. Tier-I switch d. BBRAS 319. 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In NGN, the functions of which element involve (i) noise encoding and compression, (ii) packetization of voice channels, (iii) comfort noise generation, and (iv) voice activity detection. a. Application Server b. Signalling Gateway c. Soft Switch d. Trunk Media Gateway 321. ICMP stands for a) Internet Control Message Protocol b) Intranet Control Message Protocol d) Internet Centre Message Protocol. 322. IGMP stands for a) Internet Group Management Protocol b) Internet Group Mission Protocol c) Internet Group Member Protocol. 323. Class IP addresses begin with a) 0 b) 10 c)110 (All the above) 324. IP addresses from 224 to 239 are used for a) Future use b) IP Multicasting c) None of the above 325. Addresses beginning with 127 decimal are called a) Class A address b) Class B address c) Loop Back address. 326. To calculate the no. of subnets or hosts, the formula is A) 2n-2 b) 2n-2 c) 2n-1 327. BSNL Instant Messenger can be used for a. Online chat (one-to-one) with all the users of BSNL Mail b. Online conference (Multiple users) c. Exchange / Transfer of files d. To know the availability of user e. All the above. 328. PDF stands for a) Portable document Format b) Portable Document File c) Printable Document File 329. In EWSD Lab, APS saving Register is meant for Storing Details of fortnightly and quarterly APS savings. 330. SSTP contract has been awarded to Ms. ITI Ltd M/s TCS Ltd M/s Wipro None of the above. 331. 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