Physical Network Layer Concepts

1070 words 5 pages
Unit 4 Assignment 1: Computer Basics Review
Chapter 4 Review Activities
Questions
1. You have created a simple electrical circuit with a battery, wires, and a light bulb. Which of the following is true about this circuit? (Choose two answers)
C. The circuit creates a direct current
2. A PC NIC and a switch port create one electrical circuit to use when sending data. The sender creates a (maximum) 1-volt electrical signal with a frequency of 1000 hertz. Which of the following facts are also true? (Choose two answers)
B. The phase changes over time
C. The amplitude changes over time.
3. A PC NIC and a switch port create one electrical circuit to use when

A. SlateRock’s network sends the voice through the Internet
16. Fred has a smart phone and a contract with Slatework mobile. He uses his smart phone to send a text to his friend Barney’s smart phone. Barney uses another mobile company. Barney gets the text and sends a text back to Fred. Which of the following is not a part of the story of what happens between when Fred sends the text and Barney sees the text?
B. SlateRock’s network sends the text, as bits, into the PSTN.
17. If comparing a wireless WAN to a wireless LAN, which of the components of a wireless WAN most closely matches the role and purpose of wireless LAN access point?
D. All the other answers combined
18. In a WLAN Basic Service Set (BSS), four user devices exist, labeled A, B, C, and D. A has data that it wants to send to B. Thinking of the specific steps, which of the following happens in this WLAN as part of the successful delivery of data from A to B? (Choose two answers)
A. A sends the data to the AP
C. A receives an acknowledgement from B
19. A device on a WLAN just created data that it needs to send using the WLAN. Which of the following is its next step as part of the CSMA/CA algorithm used in WLANs to share a frequency?
B. Listen, and is silent, wait for 100 milliseconds.
20. Which of the following are IEEE WLAN standards? (Choose three answers)
B. 802.11n
C. 802.11g
D 802.11a

Define the Key Terms
Key

Related

• NT1210 Final Exam Review
1580 words | 7 pages
• Business Data Communication and Networks test bank
15147 words | 61 pages
• Review Questions: Chapter 1
2505 words | 11 pages
• The Brand Experience Toolkit
2978 words | 12 pages
• Software Defined Networks
4064 words | 17 pages
• Memristor
6086 words | 25 pages
• Cloud Computing Research Paper
6108 words | 25 pages
• Wireless Network Security – How Secure Is It?
6104 words | 25 pages
• Infosys
2342 words | 10 pages
• FYT2
2164 words | 9 pages