Choose two answers. ) b. The call uses only digital electrical signals. D. The call represents short sounds as a unique set of bits. 4. According to this chapter, which of the following concepts happens in a modern-day, end- to-end voice call between two home telephones in the United States? (Choose two answers. ) c. The call uses both analog and digital electrical signals. D. The call represents short sounds as a unique set of bits. 5. A student makes a video recording of a professor teaching a class.
The student posts the video to a website.
The answers list information that the student used or chose on the imputer on which he was processing the video. Which of the following answers is the least likely to impact the size of the video file? O. A character set 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? D.
Compress the video 7. A PC user opens his Internet Explorer web browser, types the www. Certifiers. Com/books web address, and presses Enter. The browser displays new web page. What part of the web address most directly identifies the web page that shows up in the window? C. Books 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 images to arrive back at the web browser? C. The web server sees the request for the web address, dynamically creates single graphical image of the entire web page, and sends that one graphical image to the web browser. 9. Comparing the terms web object, website, and web page, which of the following answers list a true statement about these terms? (Choose three answers. ) a.
A website typically contains many web objects. C. A web page typically contains many web objects. D. A website typically contains many web pages. 10. A PC user opens her Internet Explorer web browser, types the www. Certifiers. Com/books web address, and presses Enter. The web browser acting alone cannot send a request for that web address directly; it needs elf. Which of the following components on that user’s PC likely help the web browser? (Choose two answers. ) 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 web address, and taps the button to load this web page. The web page at that web address is mantel 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 following best describes how the phone’s web browser gets all the contents of this web page? . 16 HTTP GET request messages with 16 matching HTTP GET reply messages 12. Which of the following are defined by the HTTP protocol? Choose two answers. ) c. Web servers d. 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 inter-section by directing the bits through the network? C. Node 15. Which of the following types of devices typically act as a node in a network topology? (Choose two answers. A. Router d. Switch 16. Fred started 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 most likely device at the other end of the cable connected to each end-user device? 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 tablet computers all on the edge of a cloud. The professor then happens to move on to 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
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