What is the distance over which the power carried by the wave is reduced bt 4. 1 db? typer your answer in meters to two places after the decimal

Answers

Answer 1

A wave's distance power is reduced by 5 dB, which equals a reduction in power to 50% (or 40%) of its original value.

What is sound intensity?

The power carried by sound waves per unit area in a direction perpendicular to that region is known as sound intensity or acoustic intensity.

A wave gradually loses energy as it moves through space or a medium due to a variety of processes, including as absorption, reflection, and dispersion. As a result, the wave's power decreases as it moves away from its source.

The decibel (dB) scale is frequently used to indicate changes in a signal's strength or intensity, and a fall of 5 dB means that the signal's power has decreased to 40% of its initial value. Various applications, including communication systems and wireless networks, where signal strength and quality are crucial factors, may be significantly impacted by this reduction.

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KDDI Corporation chose to consolidate their servers into a single Oracle SuperCluster running the Oracle Times Ten in-memory database in order to O a provide employees with more targeted data marts O b. implement the Extract Transform Load process O c increase data access rates and efficiency di change their model for data storage and retrieval

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KDDI Corporation chose to consolidate their servers into a single Oracle SuperCluster running the Oracle Times Ten in-memory database in order increase data access rates and efficiency. So option c is the correct answer.

Consolidating servers into a single Oracle SuperCluster running the Oracle Times Ten in-memory database allows KDDI Corporation to improve data access rates and efficiency.

By leveraging the in-memory capabilities of Oracle Times Ten, data can be stored and accessed in memory, significantly reducing disk I/O and improving query performance.

This consolidation eliminates the need to retrieve data from multiple servers, reducing network latency and improving overall data access times. This approach also enables faster processing of data-intensive tasks and allows for real-time analytics and reporting.

Overall, consolidating servers and utilizing an in-memory database improves data access speed and enhances operational efficiency for KDDI Corporation. Therefore, option c is the correct answer.

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Time Required: 10 minutes

Objective: Examine a local scan in Wireshark.

Description: This project lets you examine a trace file of an ARP-based reconnaissance probe. As you scroll through the ARP broadcasts, you should notice that this scan has some redundancy built in—for example, it repeats a broadcast for 10.0.0.55 and a few other IP addresses.

To examine a local scan:

1. Start the Wireshark for Windows program.

2. Click File, click Open, select the trace file arpscan.pkt included with your data files, and then click the Open button. The packet summary window appears. This file contains a reconnaissance probe using ARP broadcasts to find active hosts.

3. Select Packet #1 in the trace file (if not already highlighted). The packet decode window displays the content of this frame. You see the Ethernet header addressed to broadcast (0xFF-FF-FF-FF-FF-FF).

4. Expand the Ethernet II and Address Resolution Protocol subtrees in the middle capture window to scroll through the packet and answer the following questions:

a. What is the IP address of the device sending out the ARP broadcasts?

b. What hosts were discovered?

c. How could this type of scan be used on a small routed network?

5. Close the arpscan.pkt trace file and proceed immediately to 2.

Answers

To examine a local scan in Wireshark, you will need approximately 10 minutes. The objective is to analyze a trace file of an ARP-based reconnaissance probe. The arpscan.pkt trace file included with your data files is used for this exercise.

To get started, open the Wireshark for Windows program, click on File, select Open, choose the arpscan.pkt trace file, and click on Open. The packet summary window will appear, showing a reconnaissance probe using ARP broadcasts to identify active hosts.

Next, select Packet #1 in the trace file and expand the Ethernet II and Address Resolution Protocol subtrees in the middle capture window to answer the following questions:

a. What is the IP address of the device sending out the ARP broadcasts?

b. What hosts were discovered?

c. How could this type of scan be used on a small routed network?

As you scroll through the ARP broadcasts, you may notice that the scan has some redundancy built-in, repeating a broadcast for 10.0.0.55 and a few other IP addresses.

Once you have completed analyzing the trace file, close the arpscan.pkt trace file and move on to the next step.

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