Computers and Technology

A 1 MB digital file needs to transmit a channel with bandwidth of 10 MHz and the SNR is 10 dB. What is the minimum amount of time required for the file to be completely transferred to the destination?
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In a point-to-point single network, how many physical links will there be when a packet is transmitted?
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The laptop has a built-in wireless adapter or the wireless adapter is physically installed on a computer and it does not appear in Network Connections. What is most likely the problem when it does not show in Network Connections
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The effectiveness of a(n) _____ process is essential to ensure the success of a data warehouse. Select one: a. visual basic b. extract-transform-load c. chamfering d. actuating
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1. Write an expression whose value is the result of converting the str value associated with s to an int value. So if s were associated with "41" then the resulting int would be 41.2. Write an expression whose value is the last character in the str associated with s.3. Given variables first and last, each of which is associated with a str, representing a first and a last name, respectively. Write an expression whose value is a str that is a full name of the form "Last, First". So, if first were associated with "alan" and last with "turing", then your expression would be "Turing,Alan". (Note the capitalization! Note: no spaces!) And if first and last were "Florean" and "fortescue" respectively, then your expressions value would be "Fortescue,Florean".4. Write an expression whose value is the result of converting the int value associated with x to a str. So if 582 was the int associated with x you would be converting it to the str "582".5. Write an expression whose value is the str consisting of all the characters (starting with the sixth) of the str associated with s.
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Why is it important to record audio of silence in the area in which you are filming?
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What is the process for creating a new merge document for address labels?
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A junior security analyst is working on a new ticketing system called ITCustomers. Now and is working in a new field within the tickets dealing with human mistakes as security incidents. A business executive, while traveling, was surfing a gambling site on his laptop at the airport and downloaded a virus that infected the companys e-mail system. In filling out the ticket, the junior analyst selected "carelessness with laptops" as the human error. Was the junior analysts description of the human mistake on the ticket accurate? Why or why not?
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Write statements that declare inFile to be an ifstream variable and outFile to be an ofstream variable.
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Write a function solution that returns an arbitrary integer which is greater than n.
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You have encountered a technology that is effective in blocking computer-generated attempts to access a website because it is generally easy for humans to recognize distorted characters. What is this technology?
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____ convert a program design developed by a systems analyst or software developer using one of many computer languages.
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A method or system of government for information management or control; an example is the Information Technology Infrastructure Library (ITIL) that we are using as a way to organize our course.a) trueb) false
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What feature in Excel automatically displays a list of field headings when you begin to create a structured reference?
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Consider a system that contains 32K bytes. Assume we are using byte addressing, that is assume that each byte will need to have its own address, and therefore we will need 32K different addresses. For convenience, all addresses will have the same number n , of bits, and n should be as small as possible. What is the value of n ?
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SYN scanning is a tactic that a malicious hacker (or cracker) can use to determine the state of a communications port without establishing a full connection. This approach, one of the oldest in the repertoire of crackers, is sometimes used to perform denial-of-service (DoS) attacks. SYN scanning is also known as half-open scanning.In SYN scanning, the hostile client attempts to set up a TCP/IP connection with a server at every possible port. This is done by sending a SYN (synchronization) packet, as if to initiate a three-way handshake, to every port on the server. If the server responds with a SYN/ACK (synchronization acknowledged) packet from a particular port, it means the port is open. Then the hostile client sends an RST (reset) packet. As a result, the server assumes that there has been a communications error, and that the client has decided not to establish a connection. The open port nevertheless remains open and vulnerable to exploitation. If the server responds with an RST (reset) packet from a particular port, it indicates ___________________________________
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Write pseudocode to represent the logic of a program that allows a user to enter three values then outputs the product of the three values. (If you're not sure of the definition of product be sure to look it up to verify its meaning.)
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Implement the function calcWordFrequencies() that uses a single prompt to read a list of words (separated by spaces). Then, the function outputs those words and their frequencies to the console.Ex: If the prompt input is:hey hi Mark hi markthe console output is:hey 1hi 2Mark 1hi 2mark 1
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At the beginning of his webpage, Byron used a(n) __________ to provide readers with all the key points while skipping over the details. A. reference B. teaser C. narrative D. summary E. orientation
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The term _____ distinguishes the person who uses a hardware or software product from the IT workers who develop, install, service, and support the product.
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If you hear that an airplane crashes into the Empire State Building, and you immediately think of the 9/11 terrorist attack on the World Trade Center, you are reacting to what type of memory? a repressed memory a suppressed memory a flashbulb memory a pseudo-memory
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_____ is a systems development technique that tests system concepts and provides an opportunity to examine input, output, and user interfaces before final decisions are made. a. Modeling b. Prototyping c. Scrum d. RAD
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which of these is a way hexadecimal is commonly used in computing? A. represent IPv6 network address. B. communicate with the CPU.C. exchange data with peripherals. D. to represent sound waves
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in a multitasking system, the context-switch time is 1ms and the time slice is 10ms. Will the CPU efficiency increase or decrease when we increase the time slice to 15ms? Explain why.
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