28-Finals PDF

1. Which of the following is a PAN? and multimedia messaging using second generation of Mobile Networks. a) WIFI b) Zigbee a) TACS c) 1G b)...

1. Which of the following is a PAN? and multimedia messaging using second generation of Mobile Networks. a) WIFI b) Zigbee a) TACS c) 1G b) AMTS d) 2G c) GPRS d) FHSS 2. A class 3 bluetooth can reach a distance of 100 meters. 9. HSDPA Is a 3G packet based data service in W CDMA downlink with data transmission up a) True to 8 10 Mbit/s over a 5 MHz bandwidth in b) False WCDMA downlink. 3. Bluetooth Low Energy is also known as True WiBree. 10. 4G uses network wide based IP based a) True packet switching b) false True 4. The standard for Zigbee is 11. ____ Is a type of malware that takes control a) IEEE.802.3 over a device without user knowedge. b) IEEE.802.11 c) IEEE.802.15.2 a) Virus d) IEEE.802.15.4 b) Trojan horse c) Worm 5. Advanced Mobile Telephone Systems d) Man-in-the middle (AMTS) was used in the 1st generation of Mobile Network Technologies. 12. ____ is a technique to improve a malicious website's ranking through increasing traffic, to a) True the malicious website. b) False a) Phishing 6. The main drawback of the 1G Mobile b) Vulnerability exploitation Network Technologies is interoperability with c) DDoS different countries. d) SEO poisoning a) True 13. Which of the following is a good practice to b) False protect devices and networks? 7. A Mobile Network technology that uses a) Use antivirus and antispyware TDMA to multiplex up to 8 calls per channel in b) Keep firewall on the 900 and 1800 MHz bands. c) Update OS a) AMTS d) All of the choice b) TACS c) COMA d) GSM 14. _____ is a type of firewall that hides private addresses of hosts in a local area network. 8. It enables cellular network operators to provide internet access, instant messaging a) Host-based firewall  b) Proxy server applications without exposing the user's c) NAT firewall password d) Network layer firewall a) AAutth 2.0 15. _____ is a type of hacker that tests systems b) OAuth 2.0 with permission in order to identify system c) Google Authenticator vulnerabilities. d) Two Factor Authenticator a) White Hat 21. Which of the following is true about CDM? b) Gray Hat a) Each user is assigned a pseudio c) Black Hat random code, which should be d) Red Hat orthogonal to all the other codes 16. _____ is a type of hacker that compromises b) The receiver has prior knowledge of systems without permission. the orthogonal code c) The orthogonal code spreads the a) White Hat signal such that the resulting signal b) Gray hat will have higher bandwidth. c) Black Hat d) All of the choices d) Red Hat 22. _______ is a method that transmits digital 17. When using port scanners, a port will be information which are cut into smaller pieces shown as If there is no reply from the host. of information that may take different routes. a) open a) Circuit switching b) closed b) Packet switching c) filtered c) Message switching d) half open 23. ________ is a packet switching approach 18.____ is a stage in the cyber defense kill wherein each packet takes different routes chain where attacker gains remote access to and is routed depending on the identifiers in the equipment. the packet. a) Reconnaissance a) Virtual circuit Incorrect b) Weaponization b) Packet switching c) Delivery c) Store and forward d) Command and Control d) Hold and forward 19. It has the ability to block traffic based on a 24. In circult switching, _______ is a method positive rule or signature match wherein paths are separated spatially and a) IPS requires interconnection in a grid to complete b) IDS the end-to end physical link. c) DLP a) Crossbar switch d) ASP b) TSI incorrect 20. An open standard protocol that allows an c) TDM Bus end user's credentials to access third party d) None of the choices 25. In circuit switching, ______ is a method c) RG11 wherein a path between an output and input is d) RJ45 managed by a control unit depending on the allotted time slot. 31. ________ is a frame relay field used to a) Crossbar switch inform the destination when there is b) TSI Incorrect congestion. c) TDM Bus d) None of the choices a) DLO b) DE 26. Which of the following is an example of a c) FECN copper guided transmission medium? d) BECN a) Fiber optic cable 32. Which of the following is true about ATM b) Coaxial cable technology? c) Waveguide d) All of the choices a) It uses statistical time division multiplexing 27. Which of the following is used to transmit b) It is a connectionless protocol. electrical signals? c) Its frame contains 53 bytes for a) Coaxial cable payload. b) Fiber optic cable d) All of the choices c) Waveguide 33. Which of the following is true about ISDN? d) All of the choices a) It integrates speech and data on the 28. Which of the following is used to transmit same line of the PSTN. radio waves? b) it is a packet switched network that a) Coaxial cable provides digital transmission of voice b) Fiber optic cable and data over telephone copper lines. c) Waveguide c) it can be used on optical fiber cables. d) None of the choices d) All of the choices 34. refers to one of the addresses in an ATM 29. Which of the cables was used for 10Base2 cell that indicates the channel number in the Ethernet? current path. a) RG59 (a) VPI b) RG58 (b) VCI c) RG11 (c) PTI d) RJ45 (d) CLP 35. Which of the following ISDN channels is 30. Which of the cables was used for 10Base5 used for voice and data only? Ethernet? (a) В a) RG59 (b) D b) RG58 (c) H  (d) all of the choices 42. IETF is a technical advisory group of the Internet Society which oversees the 36, What is the data rate of 1 DSO channel? architecture and procedures used in Internet. (a) 4 kbps False (b) 8 kbps (c) 56 kbps 43 ______ are documents maintained by lETF (d) 64 kbps containing information about internet Protocols. (acronym) 37._______ is a frame relay field that serves as the address of the frame relay connection. RFC (a) DLCI 44. An organization that promotes long term (b) MAC research of importance to the evolution of the (c) FECN future internet. (d) BECN a) IETT 38. Which type of equalization is used in b) IRTF leased lines that automatically adjusts the c) LAB frequency response? d) IEEE a) Adaptive Equalization 45. It is non treaty organization whose b) Preset Equalization membership is comprised mainly of c) Reset Equalization standards organizations of various countries d) Parametric Equalization and responsible for Open Systems Interconnect OSt model. 39. What is the data rate of EO line? a) IEEE a) 4 kbps b) IETF b) 8 kbps c) ITU c) 56 kbps d) ISO d) 64 kbps 46. It is the United Nations specialized agency 40. A satellite has an orbital period that is the for information and communication same as the rotation rate of the Earth. technologies ICTs. a) Geosynchronous a) IEEE b) Geoasynchronous b) IETF c) Geochronous c) ITU d) Geoplesiochronous d) ISO 41. ______ is the is a European Standards 47. An ITU series of standards that covers the Organization which is a recognized regional global information infrastructure, Internet standards body dealing with protocoaspects, next generation networks, telecommunications, broadcasting and other Internet of Things and smart cities. electronic communications networks and services. (acronym) a) W b) X ETSI c) Y  d) Z 2. in AT&T FDM Hierarchy, how many total voice channels are there in 2 supergroups? 48. In Ethernet, it is an alternating pattern of Show your solution. ones and zeros that tells receiving stations that a frame is coming, and that provides a Solution: means to synchronize the frame reception Given: portions of receiving physical layers with the incoming bit stream. Supergroup = 60 voice channels a) Start Frame Delimeter 60(2) = 120 voice channels b) Preamble c) Pad 3. In AT&T FDM Hierarchy, how many total d) FCS voice channels are there in 2 mastergroups? Show your solution. 49. How many bytes are allocated for the Ethernet address? Solution: a) 2 Given: b) 4 Master group = 10 supergroup c) 6 d) 8 (10)(60)(2) = 1200 voice channels 50. VEEE 802.15.1 is the equivalent standard 4. In AT&T FDM Hierarchy, how many basic for Bluetooth. groups are there in 2 master groups? Show your solution. a) True b) False Solution: Given: TEST 2: PROBLEM 1 super group = 5 basic groups QUESTIONS: (100 points) 1 master group = 10 supergroups SOLVING/ANALYSIS/REFLECTION 5 𝑏𝑎𝑠𝑖𝑐 𝑔𝑟𝑜𝑢𝑝𝑠 ( ) (10 𝑠𝑢𝑝𝑒𝑟 𝑔𝑟𝑜𝑢𝑝𝑠 ∗ 2) 1. A T1 frame consists of 24 voice-band 1 𝑠𝑢𝑝𝑒𝑟 𝑔𝑟𝑜𝑢𝑝𝑠 channels where each channel uses 8-bit PCM = 100 𝑏𝑎𝑠𝑖𝑐 𝑔𝑟𝑜𝑢𝑝𝑠 codes. If there is 1 framing bit in the whole T1 frame, how many total numbers of bits there 5. In AT&T FDM Hierarchy, what is the total are in one T1 frame? Show your solution. bandwidth (in kH2) of 2 basic groups? Assume that each message channel is a 4k-kHz voice Solution: channel. Show your solution Given: Solution: TI Frames = 24 voice channels Given: 8 bits each (PCM) Basic Group = 12 channels (24 voice channels)(8 bits) + 1 framing bit = 193 Each channel has 4KHz voice channel bits (2 basic groups)(12 channels)(4KHz) = 96KHz 10. How many voice channels does T2 line carry? Show your solution. 6. In AT&T FDM Basic Group Formation, what is the carrier frequency (kHz) of the DSBSC Solution: signal for the voice channel 7? show your Given: solution. T2 Line Speed = 6.312 Mbps Solution: Voice Channel Speed = 64 Kbps fc = 112KHz – 4(n) KHz 6.312 𝑀𝑏𝑝𝑠 n=7 = 98.625 = 96 𝑐ℎ𝑎𝑛𝑛𝑒𝑙𝑠 64 𝐾𝑏𝑝𝑠 112KHz – 4(7)KHz = 84KHz 7. In AT&T FDM Basic Group Formation, what is the carrier frequency (kHz) of the DSBSC signal for channel 1 of the basic group? Show your solution. Solution: fc = 112KHz – 4(n) KHz n=1 112KHz – 4(1)KHz = 108KHz 8. In circuit switching using space division multiplexing. how many crosspoints are needed when there are 15 inputs and 15 outputs. Show your solution. Solution: # of crosspoints = (# of input)(# of output) 15(15) = 225 crosspoints 9. How many voice channels does T1 line carry? Show your solution. Solution: Given: T1 Line Speed = 1.544 Mbps Voice Channel Speed = 64 Kbps 1.544 𝑀𝑏𝑝𝑠 = 24 𝑐ℎ𝑎𝑛𝑛𝑒𝑙𝑠 64 𝐾𝑏𝑝𝑠