Sublayers of the data link layer The data link layer has two sublayers: logical link control (LLC) and media access control (MAC). Logical link control sublayer The uppermost sublayer‚ LLC‚ multiplexes protocols running atop the data link layer‚ and optionally provides flow control‚ acknowledgment‚ and error notification. The LLC provides addressing and control of the data link. It specifies which mechanisms are to be used for addressing stations over the transmission medium and for
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state and national governments are distinct and autonomous in their own domains? a. cooperative federalism b. dual federalism c. new federalism d. laissez-faire federalism e. social federalism Answer: b Page: 46 4. “Layer cake” federalism is also known as a. cooperative federalism. b. dual federalism. c. new federalism. d. laissez-faire federalism. e. social federalism. Answer: b Page: 46 5. “Marble cake” federalism is also known as
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------------------------------------------------- Apollo program From Wikipedia‚ the free encyclopedia Apollo 11 crew member Buzz Aldrin‚ second person to walk on the Moon‚ July 1969 The Apollo program was the third human spaceflight program carried out by the National Aeronautics and Space Administration (NASA)‚ the United States’ civilian space agency. First conceived during the Presidency of Dwight D. Eisenhower as a three-man spacecraft to follow the one-man Project Mercury which put the
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4. The Medium Access Sub Layer Broadcast channels [or multi-access channels] are a category of networks and the key issue is how to determine who gets to use the channel when there is competition for it. The protocols which define these factors belong to a sub layer of data link layer called the MAC(medium access control)sub layer. ALOHA: Norman Abramson devised a new and elegant method to solve the channel allocation problem called the “ALOHA” system which used ground-based Radio broad
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Question 1 1 out of 1 points Which of the following were cited by college students in a national survey as major impediments to performing well academically? Answer Selected Answer: Stress‚ anxiety‚ and sleep difficulties Correct Answer: Stress‚ anxiety‚ and sleep difficulties Question 2 1 out of 1 points According to the transtheoretical model‚ a person in the precontemplation stage Answer Selected Answer: has no current intention
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individuals with hypertension is conducted‚ and it is found that 80% of the individuals are able to control their hypertension with the drug. Assuming that the 5000 individuals are representative of the group who have hypertension‚ answer the following questions: a. What is the population? b. What is the sample? c. Identify the parameter of interest. d. Identify the statistic and give its value. e. Do we know the value of the parameter?
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typically include “envelope information” in the form of specific headers and trailers. __F__ 5. The Session layer is equipped to request retransmission of all erroneous or missing PDUs when reassembly is underway‚ so that it can guarantee reliable delivery of data from sender to receiver. Multiple Choice Identify the choice that best completes the statement or answers the question. __b__ 1. The ____ includes the physical transmission medium (cables or wireless media) that any network must
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Question: Some lasers are referred to as being “cw.” What does “cw” mean? 1) Circular wave 2) Constant white 3) Continuous wave 4) Clear white Science Quiz‚ Technology Quiz Question: What is the process responsible for producing photons in a diode laser? 1) Fermi level shift 2) Majority carrier injection 3) Carrier freeze out 4) Electron-hole recombination Science Quiz‚ Technology Quiz Question: What are three types of lasers? 1) Gas‚ metal vapor‚ rock 2) Pointer‚ diode‚
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Stemple chose to follow through on “taking a dive‚” as suggested by Twenty One’s producer. By‚ consciously‚ following through with the scripted plan for his dismissal from the show you began to see his string of poor choices. The prize money won from the quiz show was handed over to a “bookie” for a questionable land investment. He threatens to take legal action and reveal the show as a “fraud” when he was a willing participant in the deception of the viewers. In all of his ranting‚ his character and morals
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Three attacks in SSL protocol and their solutions Hong lei Zhang Department of Computer Science The University of Auckland zhon003@ec.auckland.ac.nz Abstract Secure Socket Layer (SSL) and Transport Layer Security (TLS) is the protocol above TCP‚ which can protect user’s privacy when they sending data from a client side to a web server‚ this is an important protocol due to the expansion of Internet. In fact‚ it is a long way to make the SSL/TLS protocol perfectly. However there are still
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