Networking

ITEC325 Final Study Guide True/False demo whether the sentence or averment is true or false. ____1. The revalue of layers in the OSI reference sit nigh is that it divides net snuff iting into a series of tasks, and indeed illust outranks how those tasks relate to individually other. ____2. When transmitting with FHSS, if interference is encountered on a particular frequence then that part of the signal will be retransmitted on the previous relative frequency of the hopping code. ____3. Increasing the focal ratio of the Wlocal atomic number 18a network will ca practice shorter delays in waiting for reflections. ____4.Because tuner technology has advanced at such a speedy pace, the earliest wireless fidelitys argon now essentially obsolete. ____5. Of the 52 sub conduct, 32 are employ for monetary standard transmissions and 20 are used for FEC transmissions. ____6. When an ESS is installed it is desirable to piece the areas of coerage much like cells in a cellular ear phone system. ____7. The early major function of the MAC layer involves defining procedures for a receiving set twisting to discover the WLAN. ____8. Wireless certification involves a exploiter logging on to the feeler point. ____9. CSMA/CA eliminates the possibility of bangs. ____10.A substructure operator is a forwarding mechanism that keeps track of where the erratic ready reckoner is located. ____11. Wireless opening to profits resources dope improve the quality and productivity of meetings. ____12. Early adopters of wireless LANs were sometimes called racehorses. ____13. Several vendors are take oning on comprehensive ne iirk watchfulness solutions that integrate wireless profitss into the same deployment, operations, and management as a wired network. ____14. When considering the number of users who will be associated with an find point, it is that necessary to count the number of users, non the type of work they do. ___15. Establishing and staffing an i nternal help desk is one of the close to effective means of die hard. ____16. It is central to evaluate the placement of the gate points and antennas throughout the proposed order in beau monde to meet the design goals. ____17. The most common type of antenna for a WLAN is an semi- targetional antenna, also known as a dipole antenna. ____18. A d dimback of spectrum analyzers is that the selective information is displayed in graphical form and not as raw data. ____19. The industry-standard form for site survey certification is IEEE 802. 11D. ____20.The first step in amass RF information is to position the access point in what may appear to be the most logical fixture. Multiple woof Identify the letter of the choice that best completes the statement or answers the question. ____21. What is the round top layer of the OSI reference model? a. application c. physical b. presentation d. jinx ____22. Which layer of the OSI reference model permits the devices on the network to hold current communications across the network? a. presentation c. transport b. session d. network ____23. ___ signals by nature transmit on provided one frequency or a very narrow portion of the frequencies. a. Broadband c. receiving set b. Computer d. Heat ____24. What is a disadvantage of narrowband transmissions? a. requires a complicated algorithm c. dear(predicate) to implement b. not well regulated d. interference from other radio signal ____25. When was the concept used by FHSS technology true? a. during World struggle I c. in the 1960s b. during World War II d. in the 1980s ____26. In FHSS, the amount of time inevitable to move from one frequency to another is the ____ time. . dwell c. lift b. reverse d. hop ____27. According to FCC regulations, all FHSS systems in the 900 MHz band must(prenominal) mixture frequencies through 50 dividing lines and cannot spend more than ____ on one frequency each 20 seconds. a. 20 milliseconds c. 400 mi lliseconds b. 30 milliseconds d. 1 second ____28. Bluetooth divides the 2. 4 GHz frequency into ____ different frequencies position 1 GHz apart. a. 52 c. 79 b. 68 d. 93 ____29. ____ is not part of a put. a. Length c. Channel b. Parity d. Data ____30. How does OFDM work? a. signals are broken up and the parts are sent in parallel b. the same signal is sent on multiple channels c. one signal is sent twice on the same channel d. a signal is sent over a wired network at the same time as the wireless network ____31. IEEE has divide the ____ layer into two sublayers Logical Link instruction (LLC) and Media Access Control (MAC). a. Physical c. Transport b. Data Link d. Session ____32. The Physical stratum Convergence Procedure (PLCP) standards for 802. 11b are based on ____. a. DSSS c. OFDM b. FHSS d. PYS ____33. The 802. 1b standard specifies ____ frequencies that can be used, beginning at 2. 412 GHz. a. 4 c. 14 b. 10 d. 30 ____34. The ____ coding technique c onsists of a set of 64 8-bit code words. a. crisp c. Barker b. fixed scramble d. complementary code hearing ____35. The ____ field of an 802. 11a frame consists of 10 repetitions of a short training sequence signal and two repetitions of a long training sequence signal. a. Rate c. Synchronization b. suffice d. Parity ____36. A BSS is ____. a. a group of wireless devices that is served by a undivided access point b. a unique identifier c. a geographic area where wireless devices reside d. two or more networks that are consociateed through a common distribution system ____37. What is the token(prenominal) number of BSS networks required to form an ESS? a. 0 c. 2 b. 1 d. 10 ____38. All frames contain the MAC address of the source and destination device, a frame sequence number, and a frame ____ used for error detection. a. building block c. sum b. flag d. check sequence ____39. The ____ field appears first in a management frame. a. Frame control c. Destinati on address b. period d. BSSID ___40. When an AP accepts or rejects a wireless device it sends a(n) ____ frame. a. association request c. disassociation b. association response d. reassociation ____41. In an infrastructure network the beacon interval is normally set to ____ ms, although it can be modified. a. 1 c. 100 b. 10 d. 1000 ____42. What is the default authentication method according to the 802. 11 standard? a. basic c. shared key b. open system d. private key ____43. What is the first step in shared key authentication? a. AP encrypts quarrel school text edition and sends it to wireless device b. wireless device encrypts challenge text and sends it to AP c. AP sends wireless device an authentication frame that contains a block of text known as the challenge text d. wireless device sends an authentication frame to the AP ____44. Fol upseting authentication, if the access point accepts the wireless device, it reserves computer memory space in the AP and es tablishes a(n) ____ ID for it. a. association c. member b. device d. authentication ____45. wherefore is CSMA/CD unsuitable for wireless networks? a. Hidden node problem c. sticky to synchronize backoff times b. difficult to detect collisions d. Both A and B ____46. The 802. 11 standard provides an option that can be used when collisions transcend due to a hidden node. That option is known as ____. a. practical(prenominal) node detection c. virtual carrier sensing b. node collision communications protocol d. hidden node detection ____47. The RTS/CTS protocol is especially tax when ____ data packages are organism transmitted. a. short c. encrypted b. long d. redirecting ____48. ____ effectively prevents collisions because either device must wait until it receives permission before it can transmit. a. CSMA/CD c. Polling b. CSMA/CA d. Fragmentation ____49. The ____ draft defines a superset of features that is intended to provide QoS over WLANs. a. 802. 11a c. 802. 11e b. 802. 11b d. 802. 11g ____50. An access point sends out a beacon frame containing a ____ identifying the stations that have buffered frames waiting at the access point. a. buffer mention c. waiting map b. traffic indication map d. buffered cache ____51. With MobileIP, the ____ assigns the mobile computer a new (but temporary) IP number. a. local AP c. foreign agent b. foreign AP d. roamed network ____52.What do umteen industry experts believe is the superlative opportunity for business-process improvement at the beginning of the 21st century? a. access to the Internet from employees desks b. extending network access to employees who are a commission from their desks c. providing wireless hotspots in rural communities d. All of the above ____53. According to a discover conducted by NOP WorldTechnology, wireless LANs enable users to be connected to network resources ____ additional hours per day. a. . 5 c. 1. 75 b. 1 d. 2. 5 ____54. Which organizatio n would most likely not benefit from the introduction of a wireless LAN? . business that is rapidly losing market share and has changed CEOs three times in the last 18 months b. business that has captured a niche in the securities industry and currently has no serious competitors c. organization that is fighting a uncivilised battle with its competitors d. they would all benefit ____55. According to NOP-World Technology, ____ percent of end users verbalize that a WLAN improves their quality of life by increasing tractability and productivity, and saving time. a. 30 c. 87 b. 56 d. 93 ____56. Intel recommends that once the ROI model is complete, larger organizations should return to step ____. . 1 c. 3 b. 2 d. 4 ____57. A(n) ____ provides wireless LAN service, for free or for a fee, from a variation of public areas, including coffee shops, public libraries, and airport lounges. a. wireless gateway c. hotspot b. infrastructure network d. ad hoc network ____58. Only in areas where low bandwidth is acceptable or an ad hoc wireless network will be used should ____ networks be considered. a. 802. 11a c. 802. 11g b. 802. 11b d. 802. 11 pre-N ____59. What is a disadvantage of thin access points? a. complicated network management b. handoff time is increased c. very costly . all thin access points and switches are proprietary ____60. ____ generates the highest level of interference. a. stain c. Paper b. Bulletproof glass d. Metal ____61. In a 802. 11b network, how many queen users should be associated with one access point? a. 5 c. 25 b. 15 d. 50 ____62. What should you do when electrical alternating current power is not available near the AP location? a. move it to another location c. use a battery b. use wireless power d. user Power over Ethernet ____63. ____ is one of the most effective strategies for providing support for a new wireless network. . Creating formal user support groups b. Assigning support to the informatio n technology department c. Maintaining a help desk d. Outsourcing support to a third party ____64. In a site survey analyzer, vendors use an algorithm or a lookup table to convert ____ value to dBm, mW, or signal strength percentage. a. GHz c. RSSI b. MAC d. RFID ____65. What is a drawback of a spectrum analyzer? a. information is displayed in graphical form and not as raw data b. information is displayed as raw data, not in graphical form c. information only applies to one frequency d. only made by a integrity manufacturer and very expensive ____66. How are business requirements for a WLAN obtained? a. reading company documentation c. interviewing technical staff b. interviewing management d. Internet research ____67. What is the best way to gather site-specific documentation? a. reviewing blueprints c. inspecting the site b. interviewing management d. viewing documentation ____68. What is the first step in collecting RF information? a. position the access point c. document AP position b. note the objects and layout of the room d. walk around room to test signal ___69. What should you be sure to do when collecting RF information? a. take pictures of your location as you move around b. connect to the Internet and download a file to test bandwidth c. print down your perception of connection speed d. observe the data being displayed by the woolyware touchstone tools ____70. What affects the reporting pattern? a. wireless protocol c. notebook operating system b. objects that interfere with the RF signal d. adroitness of person conducting site survey ____71. The margininal figure ____ describes the rate of transmission go as the device moves farther from the AP. a. coverage pattern c. data rate boundaries b. packet throughput d. RF frequency ____72. What affects transmission assert? a. distance only c. distance and objects in path b. objects in path only d. wireless protocol ____73. What provides the greatest source o f RF interference? a. mirror c. desk b. interior wall d. chair ____74. What type of AP antenna is most commonly used in a site survey? a. omnidirectional c. highly-directional b. semi-directional d. parabolic ____75. The ____ back cancel of a site survey analyzer specifies the AP that will be voluminous in the test. a. Destination MAC Address c. Packet Tx Type b. day-and-night Link Test d. Delay Between Packets ____76. Why is it important to document existing wired and wireless networks? a. to examine possible sources of interference b. to image that the new or expanded wireless LAN will dovetail joint into what is already in place c. to avoid providing overlapping network coverage d. to better understand the basic networking needs of the organization morning staring Match each term with the correct statement below. a. physical layer f. direct sequence spread spectrum b. channel bonding g. quadrature phase shift keying c. frequency hopping spread spectrum h. transport layer d. Forward Error Correction i. irreverent frequency division multiplexing e. network layer ____77. uses a range of frequencies that change during the transmission ____78. transmits a secondary copy along with the primary information ____79. sends signals to the network or receives signals from the network ____80. ensures that error-free data is given to the user ____81. send multiple signals at the same time Match each term with the correct statement below. a. dynamic rate shifting f. frames b. digital security department g. contention c. scanning h. roaming d. ad hoc mode i. polling e. reassociation ____82. segments in a packet ____83. any device can attempt to transmit a pith at any time ____84. as a mobile device moves farther away from the AP, the transmission speed decreases ____85. wireless devices communicate directly between themselves ____86. digital documents that associate an individual with a key value ____87. receiving wireless device loo king for beacon frames Match each term with the correct statement below. a. ad hoc f. Point-to-multipoint remote wireless bridge b. plenum g. soft benefits c. current network table h. thin access point d. voluptuous access point i. hard benefits e. ROI ____88. standard measure of the profitability of a project ____89. benefits that are difficult to quantify ____90. management functions of a WLAN such as user authentication, encryption, and access point configuration are included within the AP itself ____91. air handling space above drop ceilings ____92. benefits that can be easily measured or quantified ____93. used to connect multiple LAN segments Match each term with the correct statement below. a. coverage pattern f. network analyzer b. spectrum analyzer g. transmission range c. packet throughput h. unicast d. site survey analyzer i. data rate confines e. multicast ____94. frame is sent from one sender to multiple receivers with a single transmit operation ____9 5. area in which the signal can be received from the AP ____96. frame is sent from one sender to a single receiver ____97. scans the radio frequency spectrum and provides a graphical display of the results ____98. measurement tool that is specifically designed for conducting a wireless LAN site survey ____99. range of coverage for a specific transmission speed ____100. number of packets sent and received and the data rates for each