1. Users of a newly installed wireless network complain about slow data transfer and frequent loss of connectivity. The technician verifies that wireless security is properly implemented and that there is no evidence of unauthorized users on the network.Which two problems might the technician suspect? (Choose two.)
There is interference from external sources.*
The DHCP server is faulty.
The wireless signal is too weak.*
The access point antenna is too powerful.
Network passwords must be reissued to users.
Explanation:Typically, the closer a wireless NIC is to an access point, the faster the connectivity. This issue does not require the network password to be reissued. The combination of low bandwidth and intermittent connectivity points towards a weak signal or interference from outside sources.
2. A wired network is undergoing several changes that could leave it vulnerable to unauthorized devices connecting while work is in progress. Which two temporary measures would allow authorized devices to continue to access the network but prevent unauthorized devices from connecting?(Choose two.)
Disable DNS.
Disable SSID broadcast.
Disable DHCP.*
Subnet the network.
Assign static IP addresses to authorized devices.*
Explanation:Disabling DHCP and assigning static IP addresses only to authorized devices will prevent unauthorized devices from automatically obtaining IP address information. Without the correct IP address information, unauthorized devices will not be able to communicate over the network. By disabling DNS, all connected devices will no longer be able to automatically communicate with network resources by name (IP addresses should be used), but it will not prevent unauthorized devices from connecting and allowing potentially malicious access to occur. Subnetting the network will change the range of IP addresses used, but will not prevent unauthorized access to the network. Disabling SSID broadcasts only applies to wireless networks, not wired networks.
3. Which two wireless router default settings can affect network security?(Choose two.)
It-essentials v7 Chapter 6 q3 exam answers
The SSID is broadcast.*
MAC address filtering is enabled.
WEP encryption is enabled.
The wireless channel is selected automatically.
A known administrator password is set.*
Explanation:The default settings for wireless routers typically include broadcasting the SSID and using a known administrative password. Both represent a security risk for wireless networks. WEP encryption and MAC address filtering are not configured by default. Automatic wireless channel selection does not present security risks.
4. A network technician is checking a computer to see if the DHCP client is working correctly. The technician issues the ipconfig /all command. Which two parameters should the technician check?(Choose two.)
description
Default Gateway*
host name
media status
subnet mask *
Explanation:A DHCP server can provide various parameters, such as the IP address, subnet mask, default gateway, and other optional parameters. The host name, media status, and description are present even if no DHCP server is found.
5. A technician is troubleshooting an issue where the user claims that Internet access is not working, but there was Internet access the day before. Upon investigation, the technician determines that the user is also unable to access the network printer in the office. The network printer is on the same network as the computer. The computer has 169.254.100.88 assigned as its IP address. What is the most likely problem?
The computer cannot communicate with a DHCP server.*
The IP default gateway on the computer is incorrect.
The driver for the network interface card needs to be updated.
The router that connects this network to other networks is down.
Explanation:On a network that employs dynamic IP addressing, if a computer cannot contact the DHCP server to obtain an IP address, the Windows operating system automatically assigns a link-local IP, which is in the range 169.254.0.0 to 169.254.255.255 . In this case, the computer can only communicate with computers connected to the same network within this range of IP addresses.
6. A user can print to a printer that is on the same network, but the user's traffic cannot reach the Internet.What is a possible cause of the problem?
The PC's default gateway address is missing or incorrect.*
The PC has an incorrect IP address.
The network cable connected to the user's PC is faulty.
The PC's NIC is faulty.
Explanation:The default gateway IP address is used to reach other networks, including the Internet.
7. Port Triggering has been configured on a wireless router. Port 25 has been defined as the trigger port and port 113 as the open port.What effect does this have on network traffic?
Any traffic entering port 25 allows outgoing port 113 to be used.
All traffic that is sent to port 25 to the internal network will also be able to use port 113.
Any traffic that uses port 25 and leaves the internal network can also be transmitted on port 113.
All traffic sent out port 25 will open port 113 to allow incoming traffic on the internal network through port 113.*
Explanation:Port triggering is used to allow incoming traffic through the firewall based on outgoing traffic. The trigger occurs when an application makes use of a specific port on the internal network. An external port is then opened on the firewall. This allows traffic to temporarily pass through the ingress ports to a specific device.
8. A PC cannot connect to a wired network. Pinging the loopback address is successful, but the gateway cannot be reached. On the network switch, all the interface lights are on except the interface connected to the PC. The network card LED is off. What is the most likely cause of this problem?
The gateway needs to be fixed.
The network cable is faulty.*
The network switch is faulty.
The PC has an incorrect IP address for the DNS server.
Explanation:The network card works if the loopback address can be pinged. Network card LED that is off indicates a faulty cable or poor connection.
9. Today's small business IP configuration is manually and time consuming. Due to the increased growth of the network, a technician needs an easier way of IP configuration of workstations.Which service would simplify the task of configuring the workstation's IP?
APIPA
DHCP*
I ASK ME
ICMP
Explanation:On networks with more than a few hosts, DHCP simplifies the addressing process. A DHCP server automatically assigns host IP addresses.
10. A technician troubleshooting a network problem used CLI commands to determine that a computer had not been assigned a correct IP address from the DHCP server. What command can the technician use to resolve this issue?
whistle
ipconfig/release
track
ipconfig/refresh*
Explanation:The ipconfig /renew command will cause the computer to request a new IP address from the DHCP server. The ipconfig /release command will remove the current IP address but will not prompt for a new address. The ping and tracert commands are used to test network connectivity.
11. What network protocol is used to automatically assign an IP address to a computer on a network?
FTP
DHCP*
ICMP
SMTP
APIPA
Explanation:A Dynamic Host Configuration Protocol (DHCP) server automatically assigns IP addresses, which simplifies the addressing process. FTP manages file transfers. SMTP sends email. ICMP is a messaging protocol used for troubleshooting. APIPA is Automatic Private IP Address Forwarding, a Windows operational feature that allows DHCP clients to obtain addresses even when no DHCP server is present.
12. Which security technique could provide secure access to a server located in a small office without the cost of implementing a DMZ or purchasing a hardware firewall?
implement hashing for all wireless devices
implement MAC address filtering
implement port forwarding*
implement basic security on all wireless access points
Explanation:Port forwarding provides a rule-based method of directing traffic between devices on separate networks. This method provides access to devices over the Internet in a less expensive way than using a DMZ.
13. A group of users cannot connect to the network. Testing several of the PCs and issuing the ipconfig command, the technician notices that they all have an IP address in the 169.254.x.x range.What is the most likely cause of this problem?
The Internet connection is down.
The DHCP server is down.*
The gateway address is incorrect.
The DNS server is down.
Explanation:If the PCs cannot connect to a DHCP, they will be assigned an IP address within the range 169.254.0.0 – 169.254.255.255.
14. What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?
2001:db8:efef:a::1*
2001:db8:eef:a:1
2001:db8:efef:a::0001
2001:db8:efef:a:::1
Explanation:There are two rules for IPv6 address compression. Rule 1: Leading zeros can be removed in any hextet. Rule 2: Contiguous hextets of all zeros can be compressed into a double colon. Rule two can only be applied once.
15. What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?
/8*
/sixteen
/24
/32
Explanation:The proper CIDR notation for a subnet mask of 255.0.0.0 is /8. This is because /8 indicates that the first eight bits of the subnet mask are set to binary 1.
16. A technician is setting the channel on a wireless router to 1, 6, or 11.What is the purpose of adjusting the channel?
to disable SSID broadcast
to enable different 802.11 standards
to provide stronger security modes
to avoid interference from nearby wireless devices*
Explanation:Channels 1, 6, and 11 are selected because they are separated by 5 channels. thus minimizing interference with adjacent channels. The frequency of one channel can interfere with channels on either side of the main frequency. All wireless devices must be used on non-adjacent channels.
17. Which network server is malfunctioning if a user can ping a web server's IP address but cannot ping the web server's host name?
the DNS server*
the dhcp server
the ftp server
the HTTP server
Explanation:If the pings are successful to an IP address but not to a hostname, then the problem may be that a DNS server cannot be reached.
18. Multiple users report that workstations are assigned an IP address of 169.254.x.x. Users can only communicate with each other.What is a possible solution?
Restart the DNS server.
Statically configure a default gateway on each workstation.
Check the network cable on all user machines.
Restart the DHCP server.*
Explanation:When a network device automatically obtains the IP address 169.254.x.x, it cannot receive an IP address from a DHCP server. The DHCP server must be restarted to ensure it is operational.
19. An administrator deploys wireless access points throughout the office to provide wireless network connectivity to users. Each workstation receives an IP address via DHCP. After connecting a file server with a static IP to the wired network, the administrator receives an IP address conflict message.What is a possible solution?
Restart the DHCP server.
Change the IP address of the file server with the ipconfig /release and ipconfig /renew commands.
Change the static IP configured on the file server.*
Connect the file server to the wireless network.
Explanation:If an IP address conflict message is displayed, then a single IP address is being used more than once on the same network. To resolve this issue, the administrator must provide a different static IP address to the server on the network.
20. A workstation has been moved from the first floor to the fifth floor within an organization. The user now reports that the workstation cannot connect to the network. A technician suspects that the workstation was unable to obtain an IP address from a DHCP server.What is a possible cause of the problem?
An IP address conflict occurred.
The DHCP server is misconfigured.
The workstation has been configured with a static IP address.*
The default gateway address is misconfigured on the workstation.
Explanation:In most cases in an organization, when a computer moves from one department to another, it needs a new IP address to connect to the network. When a computer is configured with a static IP address, it will not start the process of obtaining a new IP address from DHCP servers.
21. A device has been assigned the IPv6 address of 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64.What is the host id of the device?
2001:0db8:cafe:4500:1000:00d8:0058:00ab
2001:0db8:coffee:4500
1000:00d8:0058:00ab*
00ab
Explanation:The address has a prefix length of /64. Therefore, the first 64 bits represent the network part, while the last 64 bits represent the host part of the IPv6 address.
22. Which IPv6 address represents the most compressed form of the IPv6 address 2001:0db8:cafe:0000:0835:0000:0000:0aa0/80?
2001:0db8:cafe:0000:0835::0aa0/80
2001:db8:cafe:0000:0835::aa0/80
2001:0db8:cafe:0000:0835::0aa/80
2001:db8:brown::0835::aa0/80
2001:db8:brown:0:835::aa0/80*
Explanation:There are two rules that exist to help reduce the number of digits within an IPv6 address: Rule 1 is used to remove any leading 0's. After applying rule 1 to 2001:0db8:cafe:0000:0835:0000:0000:0aa0/80, we compute the result as 2001:db8:cafe:0:835:0:0:aa0/80. Rule 2 is used to replace any group of consecutive zeroes once in the entire IPv6 address. After applying rule 2 to 2001:db8:cafe:0:835:0:0:aa0/80, we calculate the result as 2001:db8:cafe:0:835::aa0/80.
23. After speaking with the customer, a network technician suspects that an invalid IP address is the most likely cause of a network problem.What step in the troubleshooting process does this represent?
Identify the problem.
Test the theory to determine the cause.
Establish a theory of probable cause.*
Establish an action plan to solve the problem and implement the solution.
Explanation:Before a solution can be proposed or tested, the technician must first speak with the customer to identify the problem and establish a theory of probable cause.
24. Which filtering method uses the physical address to specify exactly which device is allowed or blocked from sending data on a network?
MAC address filtering*
Forwarding of ports
port triggering
White list
Explanation:MAC address filtering specifies exactly which MAC addresses of devices are allowed or blocked from sending data on your network.
25. How many bits are used to represent an IPv6 address?
128*
48
32
12
26. How many bits are used to represent the host address of a computer with an IP address of 192.168.1.25 and a subnet mask of 255.255.255.0?
8*
48
32
12
27. How many bits are used to represent the network address of a host with an IP address of 192.168.150.16 and a subnet mask of 255.255.0.0?
sixteen*
128
32
4
28. How many bits are used to represent the OUI part of the MAC address of a NIC card?
24*
8
128
42
29. How many bits are used to represent a MAC address?
48*
8
128
64
FAQs
What is the name of Chapter 1 in IT Essentials? ›
Chapter 1: Introduction to the Personal Computer IT Essentials: PC Hardware and Software v4. 1.
What is the problem if a computer automatically configures an IP address? ›Answers Explanation & Hints:
When a computer automatically configures an IP address in the 169.254. x.x range, then it is an indication that the DHCP is inaccessible or down.
Which laptop component makes use of throttling to reduce power consumption and heat? Answers Explanation & Hints: To reduce heat and power consumption, CPU throttling can be used. CPU throttling reduces the CPU speed.
What contains chapter 1? ›- Study background.
- Statement of the problem.
- Purpose of the study.
- Research question(s)
- Significance of the study.
- Definition of terms.
- Theoretical framework (not required for project proposal/report)
- Limitations of the study.
The terror, which would not end for another twenty-eight years—if it ever did end— began, so far as I know or can tell, with a boat made from a sheet of newspaper floating down a gutter swollen with rain.
How do I manually set IP address? ›Click Start > Settings > Network & Internet. Under your local area connection, click Properties. Under IP assignment, click Edit. Choose Manual, toggle on IPv4, and enter the IP address.
How do I enter my IP address manually? ›- Access the Control Panel. In the Windows search bar, type in “ncpa.cpl” and then press enter. ...
- Select the Network Adapter. ...
- Select Properties. ...
- Select Internet Protocol Version 4 (TCP/IPv4) ...
- Manually enter IP address and subnet mask. ...
- Save Settings. ...
- Revert Back to DHCP.
- Select Start, then type settings. Select Settings > Network & internet.
- Do one of the following: ...
- Next to IP assignment, select Edit.
- Under Edit network IP settings or Edit IP settings, select Automatic (DHCP) or Manual. ...
- When you're done, select Save.
Another way to prevent thermal throttling is to reduce the workload of the device. This can be done by closing unnecessary programs and background processes and limiting the number of programs running simultaneously. This can help to reduce the amount of heat being produced and prevent the device from overheating.
What temperature does a laptop start throttling? ›Your processor, or CPU, will begin thermal throttling when it reaches a certain temperature range, usually around 90 to 100 degrees Celsius. This applies to both desktop and laptop designs, and yes, it is a much harder threshold for laptops to stay under due to their size and airflow limitations.
How do I stop my computer from throttling? ›
- Reduce the temperature in your environment.
- Ensure that your laptop has adequate ventilation by ensuring there is enough space around it.
- Make sure that the laptop fan is not covered in dust.
- Consider using a laptop cooling pad.
So, as a story within the story, each chapter has to have a clear chapter structure – a beginning, middle, and end and a specific goal. The goal can range from something simple, like introducing the main character to testing the message and affirming for readers why they experienced your story.
How many parts should a chapter have? ›Chapters can be long or short
Each of your chapters can have only one scene or multiple scenes. There are no rules you have to follow except for what makes logical sense for your story. You'll probably want to stay away from having lots of very short chapters unless your story takes many dramatic twists and turns.
CHAPTER 1 In this section, you will introduce your readers to the issue you are exploring. Be sure to make your first sentence a compelling “hook.” State the major thesis that guides your study. In this section you will provide a concise statement of the problem in just a few paragraphs.
What makes a good first chapter? ›- Putting your reader into the world (location/setting/time period)
- Posing a question the reader wants to get an answer for (create mystery or intrigue)
- Introducing the main character.
- Setting the mood.
- Kickstarting the plot development (your inciting incident)
- 1) Introduce the main character. ...
- 2) Make us care enough to go on a journey with that character. ...
- 3) Set tone. ...
- 4) Let us know the theme. ...
- 5) Let us know where we are. ...
- 6) Introduce the antagonist. ...
- 7) Ignite conflict.
Parents need to know that It Chapter Two is the follow-up to the hugely successful It (2017); both films are based on Stephen King's novel. This one -- which is more centered on adults than kids -- is very long and less scary than the first, but it's definitely entertaining, with great characters and…
What is the best IPv4 address? ›- Cisco OpenDNS: 208.67. 222.222 and 208.67. 220.220;
- Cloudflare 1.1. 1.1: 1.1. 1.1 and 1.0. 0.1;
- Google Public DNS: 8.8. 8.8 and 8.8. 4.4; and.
- Quad9: 9.9. 9.9 and 149.112. 112.112.
The easiest way to change IP manually is simply to reset your router. Note that this method will simply issue a new dynamic IP address (constantly changing) rather than a static one. You can also choose to refresh your IP address.
Does VPN change IP address? ›A VPN replaces your actual IP address to make it look like you've connected to the internet from a different location: the physical location of the VPN server, rather than your real location.
What is the IP address of Google? ›
Replace those addresses with the Google IP addresses: For IPv4: 8.8.8.8 and/or 8.8.4.4 . For IPv6: 2001:4860:4860::8888 and/or 2001:4860:4860::8844 .
How do I change my IP address on my phone without VPN? ›- Go to Settings and select Connections.
- Tap Mobile networks and open Access Point Names or APNs.
- Find the APN you are currently using and tap it.
- Enter the IP address or hostname of a proxy server in the Proxy field.
- Enter the port number of a proxy server in the Port field.
- Once done, save the changes.
Go to Settings >> Wireless & networks/WLAN, or Settings >> Network & Internet >> Wi-Fi. Tap on the Wi-Fi you are connected to, then it will show the network info including signal strength, security, MAC address and IP address.
How do I get my IP address back to normal? ›Go to "Start > Run" and type " cmd " (no quotes), then select "OK" Type " ipconfig /release " (no quotes) and press "Enter" Once the prompt returns, type " ipconfig /renew " (no quotes), then hit "Enter," Finally, type " exit " (without quotes) then press "Enter" to close the window.
How do I reset my IP port? ›- Right-click the Start menu and select Command Prompt (Admin).
- Enter your admin username and password, if prompted.
- A command prompt window will open. At the flashing cursor, type ipconfig /release. ...
- Type ipconfig /renew to get a new IP address.
- Type exit to exit the command prompt.
- Connect to a VPN to change your IP address. ...
- Use a proxy to change your IP address. ...
- Use Tor to change your IP address for free. ...
- Change IP addresses by unplugging your modem. ...
- Ask your ISP to change your IP address. ...
- Change networks to get a different IP address. ...
- Renew your local IP address.
Making sure that your PC has proper airflow isn't just a great way to prevent GPU thermal throttling, it also ensures that all of your parts stay cool. If your GPU continues to thermal throttle, try lowering your in-game settings to reduce the workload on your GPU.
What temp causes CPU throttling? ›CPU thermal throttling occurs when your CPU hits critical temperatures (usually around 194 Fahrenheit or 90 Celsius) and starts sacrificing performance to maintain or reduce that temperature.
What is power throttling? ›Processors have two modes of thermal protection: throttling and automatic shutdown. When a core exceeds the set throttle temperature, it will start to reduce power to bring the temperature back below that point. The throttle temperature can vary by processor and BIOS settings.
Should I warm up my PC before gaming? ›Performing a warm-up is important prior to any physical activity, and gaming is no different!
How do I know if my computer is throttling? ›
You need to type in the command perfmon.exe /res and hit the enter key. In the window that pops up, look for a blue square called “Maximum Frequency”. Look at the percentage value nearby. If the value appears capped out, then the CPU is throttling.
How long does thermal paste last? ›Sealed in the tube, the thermal paste can last easily for 2-3 years. It can last a few more years, depending on how you store it.
Is throttling illegal? ›Is Throttling Legal? Throttling an internet connection is like a sneaky business that shortchanges its customers. Nonetheless, throttling is a legal practice, as long as ISPs adequately explain it to their customers. On the other hand, failure to inform customers about throttling is illegal.
Why is my CPU throttling at 100%? ›Throttling is a mechanism in Intel® Processors to reduce the clock speed when the temperature in the system reaches above TJ Max (or Tcase). This is to protect the processor and to indicate to the user that there is an overheating issue in their system that they need to monitor.
Is throttling bad for a PC? ›Thermal throttling is designed to cool and protect CPU and GPU chips in response to heavy workloads, but there's one caveat: Although thermal throttling protects the hardware, it can cause game lag. As PCMag.com notes, “Thermal throttling helps cool the chip when it gets too hot by lowering the speed.”
What is a chapter 1? ›Chapter One refers to a first chapter in a book.
How to open chapter 1? ›- 1) Introduce the main character. ...
- 2) Make us care enough to go on a journey with that character. ...
- 3) Set tone. ...
- 4) Let us know the theme. ...
- 5) Let us know where we are. ...
- 6) Introduce the antagonist. ...
- 7) Ignite conflict.
- Capture the reader's interest. ...
- Give an overview of your research topic. ...
- Detail how your research is going to make a contribution. ...
- Explain what your interest is in the topic. ...
- List your research objectives. ...
- Give a forthcoming chapter overview. ...
- Learn from others.
Answers Explanation & Hints:
Computers designed for audio and video editing will need specialized inputs and outputs for recording and playback equipment. This requires an audio and video card that can handle the variety of inputs and outputs needed.
There are no rules when it comes to chapter length. The important thing is to concentrate on making your chapters fit your story, not on making your story fit your chapters. Many novelists these days prefer chapters that are between 1,500 words—or six book pages— and 8,000 words, or 32 book pages.
What makes a good chapter 1? ›
The first chapter should engage readers, introduce your protagonist, and provide a window into the world of your story.
Should it be chapter 1 or chapter one? ›Capitalize "Chapter," "Unit," and "Exercise"
The title is written out (e.g., Chapter 1), and titles should be capitalized. However, even if the chapter has a name (e.g., Gerunds), we commonly keep the capitalization (e.g., Open your books to Chapter 1, Gerunds) because it still represents the title.
- Begin with action. When in doubt, begin the opening scene of a new chapter with action. ...
- Try a new point of view. ...
- Reveal new information. ...
- Include sensory details. ...
- Jump through time.
- End with a cliffhanger. Cliffhangers pose big questions at the end of a chapter or section. ...
- End at a natural pause. If you're not writing a cliffhanger ending, stop at the moment you've fulfilled your narrative promise to the reader.
The chapter three should begin with a paragraph reiterating the purpose of research. It is very important that before choosing design methods, try and ask yourself the following questions: Will I generate enough information that will help me to solve the research problem by adopting this method?
Should chapter 1 be in past tense? ›Ideally, Chapter 1 (introduction) should be past tense, chapter 2 (literature) can be present or past depending on how you quote, chapter 3( methodology) definitely past tense, chapter 4( results, analysis and discussion) can be a combination of past and present and lastly chapter 5 (recommendation and conclusion) ...
What to avoid in writing chapter 1? ›- An overly slow opening. ...
- Generic or clichéd beginnings. ...
- Overwritten prose. ...
- Too much descriptive detail. ...
- Backstory or info-dumping. ...
- False beginnings/bait-and-switches. ...
- An unnecessary prologue.
- Memory Unit.
- Control Unit.
- Arithmetic and Logical Unit.
The central processing unit (CPU) is the most important part of any computer, whether it's for gaming or for regular work.
What is the most important part of a workstation? ›Central Processing Unit (CPU)
The central processing unit (CPU) - commonly referred to as the processor - is the 'brain' of your computer. The CPU solves all the sophisticated algorithms and programming your computer does while running programs or applications.