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See Also [[Computing - Networking]]S Flashcards Why is cloud computing beneficial for a business?? It means they don’t have to make their own network. Backlinks [[Computing - Syllabus]]S Metadata date: 2021-02-05 11:10 tags: - '@?computing' - '@?networking' - '@?public' title: Computing - Cloud Computing

See Also [[Computing - Networking]]S Flashcards What is a Wireless Access Point (WAP)?? What devices connect to the internet through. What three things do you need to connect to the internet?? ISP Wireless Router Device with NIC What does SSID stand for?? Service Set Identifier In the context of networking, what does SSID mean?? A unique name given to the network. Why might you want to hide the SSID?? So that an attacker has to actually know the name of the network to try break in.

Flashcards What is the symbol for wavelength?? $$ \lambda $$ What is the symbol for the period of oscillation in a wave?? $$ T $$ What is the symbol for wave speed?? $$ v $$ What is the frequnecy of a wave?? The number of wavelengths passing through a given point per unit time. What is the period of oscillation of a wave?? The time taken for a wave to move one whole wavelength past a given point.

See Also [[Stats - Statistical Distributions]]S [[Stats - Probability]]S [[Maths - Combinations]]?? Flashcards What $ \left(\begin{matrix} n \ r \end{matrix}\right) $ could you write for the number of ways you can pick $3$ students from a class of $28$?? $$ \left(\begin{matrix} 28 \\ 3 \end{matrix}\right) $$ What $ \left(\begin{matrix} n \ r \end{matrix}\right) $ could you write for the number of ways you could pick $2$ left-handed people from a total of $3$ people?

See Also [[Maths - Differentiation]]S https://betterexplained.com/articles/derivatives-product-power-chain/ Flashcards What is the chain rule?? $$ \frac{dy}{dx} = \frac{dy}{du} \times \frac{du}{dx} $$ What new variable do you introduce when using the chain rule?? $$ u $$ When do you apply the chain rule?? When you have composite functions. $$y = (3x + 4)^5$$ What substitution would you make in order to differentiate?? $$ u = 3x + 4 \\ y = u^5 $$ $$y = u^5$$ What is $\frac{dy}{du}$?

See Also [[Computing - Networking]]S Flashcards What is a computer that is not connected to any other devices called?? A standalone computer. What’s the name for two or more computers connected together?? A network. What is a Local Area Network?? Two or more computers connected together within a small geographical area. What is a bus network?? An arrangement where nodes are connected in a daisy chain by a single central communications channel.

See Also [[Maths - Differentiation]]S Flashcards $$y = a^x \ y = a^{-x}$$ What is true about these two graphs?? They are reflections of each other in the $y$-axis. $$y = a^x$$ What is the $y$-intercept of this graph?? $$ 1 $$ $$\log_a b = c$$ If this is true, what is also true?? $$ a^c = b $$ $$3^x = 9$$ What would you do to both sides to make $x$ the subject?

What three things does the resistivity depend on?? The material of the wire. The length of the wire. The cross-sectional area of the wire. If you double the length of a wire, what happens to the resistance?? It also doubles. What’s the difference between resistivity and resitance?? Resistivity is the property of a material whereas resistance is just a measurement of a component. How would you write that the resistance $R$ is directly proportional to its length $L$?

See Also: [[Computing - Networking]]S Serial vs Parallel What is serial data transmission?? Where bits are sent one after another along the same data line. How can you do two-way communication using serial data transmission if you only had one wire?? You would need two wires. What’s an example of a serial data cable?? USB How are serial cables sometimes deceptive in their ability to do two-way communication?? The multiple data lines are sheathed together so it only looks like one line.

What is the simple case of partial fractions?? Where the denominator is $(ax + b)(cx + d)$. What is the harder case of partial fractions?? Where the denominator is $(ax + b)(cx + d)^2$ $$\frac{5x}{(x + 2)(x - 3)}$$ What’s the first step to finding the partial fractions?? Rewriting as $$ \frac{A}{x + 2} + \frac{B}{x - 3} $$ $$\frac{A}{x + 2} + \frac{B}{x - 3}$$ How could you add these two fractions together?? $$ \frac{A(x - 3) + B(x + 2)}{(x+2)(x-3)} $$

See Also https://www.aqa.org.uk/subjects/computer-science-and-it/as-and-a-level/computer-science-7516-7517/subject-content-a-level/fundamentals-of-communication-and-networking [[Computing - Communication]]S Questions Explain the differences between client-server and peer-to-peer networking. In a client-server network, some of the ndoes on the network are nominated as clients and some are nominated as servers. Clients request services from servers, such as shared resources or email information, and the server will respond. Arranging a network like this has a few advantages, such as allowing for easier backups and a higher level of security since everything is maintained by a central authority.

See Also [[Maths - Differentiation]]S Flashcards Visually, if $y = f(x)$ is a maximum or minimum, what does the curve $y = f'(x)$ do?? Cuts the $x$-axis. Visually, if $y = f(x)$ is a point of inflection, what does the curve $y = f'(x)$ do?? Touches the $x$-axis. Visually, if $y = f(x)$ has a positive gradient, where is the curve $y = f'(x)$?? Above the $x$-axis. Visually, if $y = f(x)$ has a negative gradient, where is the curve $y = f'(x)$?