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OSU BA 479 - Questions on Student Presentation Topics

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BA479 Questions on Miscellaneous Topics covered during last three lectures of Winter 2007 TermATM: 1. How large is the cell size for an ATM cell (both header and data)?Answer: 53 Bytes (48 bytes of data, 5 bytes for header)2. How fast can ATM transmit data at half duplex?Answer: 155 Megabits/sec Higher speeds are possible by multiplexing ATM circuits – page 319 of text. 3. What layer does ATM operate at?Answer: Data Link Layer4. Expand the acronym ATM. Answer: Asynchronous Transfer ModeProvide descriptive answers for the following questions:5. Differentiate between Ethernet and ATM. Ensure that you comment on the respective packet sizes, addressing schemes, transmission speeds, and error detection/error correction capability. 6. Identify and describe the five classes of Quality of Service (QoS) routing supported by ATM. Expand acronyms used. ________________________________________________________________________Wireless Networks - WiFi: 1. What are some advantages and disadvantages to wireless networks?2. What are the differences between a distributed coordination function and a point coordination function in data transmission?3. Order the wireless security types from least secure to most secure. What are some features of each type?________________________________________________________________________Peer to Peer Networks1. What is Darknet?2. Why are P2P networks so popular for transferring files?a. Files such as music, videos, and software are in high demand so there are always users sharing the file to uploadb. They are connected through a LAN so it provides higher transfer speedsc. Cost efficient way of promoting personalized content on the internetd. Both a and ce. None of the aboveAnswer: d3. When was Napster created?a. 1999b. 1998c. 1997d. 1996e. None of theseAnswer: a_______________________________________________________________________Internet 21. What Internet2 group created the security task force? Answer: EDUCAUSE2. True or False: Internet2 is the same as Web2.0. Answer: False3. When was Internet2 Started? Answer: October 1st 2006________________________________________________________________________WiMax1. WiMAX was developed to be the IEEE standard for:a. Wireless WANb. Wireless LANc. Wireless MANAnswer: c 2. Orthogonal frequency division modulation makes the WiMAX radio signal:a. fasterb. more robustc. more secured. less secureAnswer: b 3. WiMAX media access control usesa. a scheduling algorithmb. contention with collision detectionc. contention with collision avoidanced. token-passingAnswer: a 4. Devices that carry the "WiMAX Forum Certified" logo have:a. been tested for compliance by a government organizationb. interoperability with all other wireless broadband devicesc. interoperability with other WiMAX Forum Certified devices regardless of countryd. interoperability with other WiMAX Forum Certified devices in the US onlyAnswer: c 5. Practical uses for WiMAX include:a. Backhaul transmissionb. Last-mile connectionsc. Enabling mesh networksd. all of the aboveAnswer: d_______________________________________________________________________IPv61. Who performs packet fragmentation in IPv6?a. Clientsb. Serversc. Magic Wizardd. ICANN2. How many available addresses are there in IPv6?a. 2^16b. 2^32c. 2^64d. 2^1283. The United States has mandated that IPv6 be implemented by Summer 2008. a. Trueb. False________________________________________________________________________Satellites: 1. What are the three main orbits that satellites are in? Answer:o Low Earth Orbit (LEO)so Medium Earth Orbit (MEO)so Geosynchronous Earth Orbit (GEO)s 2. About how many satellites are operational today?Answer:About 11,000 (11,193) 3. What are some common applications for satellites?Answer:GPS, TV, Radio, Weather, Military.________________________________________________________________________DSL/Cable Modems:1. Identify 2 basic categories of DSL and explain what they mean?Answer: Symmetric and Asymmetric; symmetric DSL uses the same downstream and upstream speeds whereas asymmetric uses different data rates for each.2. Which broadband service (cable or DSL) shows a reduction in speed the further you are from the phone company's central office? Answer: DSL 3. Early on during the devlopment of both DSL and cable internet there were a a few major disappointments, what are two of them?Answer: The three major disappointments were over the reliability of DSL, the security of cable modems, and the accessibility of broadband in general. VPN – Virtual Private Networks1) Identify two main types of VPNAnswer:- Secure- Trusted2) What are three advantages to VPN?Answer:- Cost effective- Mobility- Scalability- Security3) What is tunneling?Answer:- Tunneling is a means of connecting to a VPN without any of the routing servers or systems along the path to know that the client is connected to a private network. ________________________________________________________________________VLAN – Virtual Local Area Networks1. Identify two advantages and two disadvantages of VLANs.2. True or False: VLANs are typically used by small businesses. 3. Identify the different types of VLANs. Briefly describe one type of VLAN and identify the layer at which


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