Which of the following answers is the least likely to impact the size of the video file? C. A video frame of a particular size d. A choice for the number of frames per second. 6. A student records a video of a professor teaching a class. The student plans to later post the video online on a website. Which of the following answers lists something discussed in this chapter that the student could do to improve the chances that other students will watch the video? A.
Store the video on a flash disk d. Compress the video 7. A PC user opens his Internet Explorer web browser, types the www. Certifiers. Mom/books web address, and presses Enter. The browser displays a new web page. What part of the web address most directly identifies the web page that shows up in the window? B. Www. Certifiers. Com 8. A user on a tablet computer opens her web browser, taps the www. Certifiers. Com/books web address, and then taps the button to load the page.
The user then sees a web page that lists text plus several different graphics images. The web server actually stored the web page as one text file and several graphics files (objects). What happens to cause all the text and mages to arrive back at the web browser? . The web browser asks for the one object identified by the web address, and the web server automatically sends the rest of the objects to the browser. 9. Comparing the terms web object, website, and web page, which of the following answers list a true statement about these terms? A. A website typically contains many web objects c. A web page typically contains many web objects e. A web object typically contains many websites 10. A PC user opens her Internet Browser web browser, types the www. Certifiers/ com/books web site address, and presses Enter.
The web browser acting alone cannot send a request for that web address directly; it needs help. Which of the following components on that users PC likely help that web browser? C. The operating system on the PC d. The PC’s NICE 11. A user grabs his smart phone, opens a web browser, taps the www. Certifiers. Com/books web address, and taps the button to load this web page. The web page at that web address is an HTML file that includes instructions that link to 15 other web objects; those instructions state that to load this web page, these other 15 objects must be loaded as well.
Which of the allowing best describes how the phone’s web browser gets all the content of this web page? A. 16 HTTP GET request messages with 16 matching HTTP GET reply messages 12. Which of the following are defined by the HTTP protocol? B. Web addresses 13. A PC user opens her Internet Explorer web browser, types the server from which the web page will be retrieved? B. Www. Certifiers. Com 14. Using the terminology introduced in this chapter, think about network topologies, which of these terms lists a network component that acts the most like a policeman directing traffic in an intersection by directing the bits through he network? . Protocol 15. Which of the following types of devices typically act as a node in a network topology? A. Router. 16. Fred starting a mining company as a young lad. The company has grown, now with three mines and an administrative office in town, with 100 employees. The company has a network that connects all the computers at all four sites. Which of the following terms best describes Fried’s company network? D. SMB network 17. A company builds a network that connects its 1000 branch offices with about ten employees each, plus three other sites with over 2000 employees each.
Most of the end-user devices connect to the network using cables. Which of the following is the mostly likely device at the other end of the cable connected to each end-user device. A. Router 18. A student got distracted in class for a while and was not paying attention. He looks up, and the professor has a drawing on the screen, with phones, PC’s, and tablets computers all on the edge of a cloud. The professor then happens to move onto the next slide. What did the cloud represent? D. The internet 19. The acronym ISP, as used in networking, stands for which of the following? A. Internet service provider 20.
To connect to the Internet, a large enterprise network typically connects its network through some link to which of the following? B. Any Sip’s network Define Key Terms Computer Networking: the practice of linking computer devices together to support digital communication among them. Computer Network: a telecommunications network that allows computers to exchange data Application: the use of a technology, system or product Email: a system of world-wide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient’s terminal when the recipient logs in.
Voice Call: a connection over a telephone network between the calling party and the called party. Video Frame: one of the many still (or nearly so) images which compose the complete moving picture. Web Server: the hardware or the software that helps to deliver web content that can be accessed through the Internet. Web Browser: a program used to view HTML documents. Web Address: identifies the location off specific web page on the Internet Web Page: a web document that is suitable for the World Wide Web and the web browser Protocol: standardized method for transmitting data and/ or establishing communications between different devices.
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