Week 14

Match each battery type on the left with the battery characteristics on the right. (You can use each battery type more than once.) 1. Takes up the most physical space. 2. Takes up the most physical space. 3. The most expensive of Nickel batteries. 4. Cannot be overcharged. 5 Suffers from swelling and catching fire.

1. Nickel Cadmium (NiCad) 2. Lithium Ion (Li-Ion) 3. Nickel Metal Hydride (NiMH) 4. Lithium Ion (Li-Ion) 5. Lithium Ion (Li-Ion)

You need to view detailed IP configuration information on your Windows workstation. 1. In addition to the IP address, subnet mask, and default gateway configuration, you need to see the network card's MAC address and the addresses of the DHCP and DNS servers the workstation is communicating with. Which command would you enter at the command line to see this detailed information? 2. When you see the DNS server address, you realize that this information needs to be updated. Earlier in the day, you implemented a new DNS server with a new IP address. The workstation will update this information in 24 hours. Which command can you enter at the command line to update the DNS server information right away?

1. ipconfig /all 2. ipconfig /flushdns

1. Resolves (looks up) a speficied hostname's IP address. 2.Tests connectivity between devices and shows the routers in the path between the two devices. 3. Sends an ICMP echo request/reply packet to a remote host. 4. Displays current connections and incoming and outgoing connections. 5. A few simple replies to this request from the remote host indicates that a connection exists between sender and receiver. 6. Displays active sessions, ports, sockets, and the local routing table. 7. Performs a continuous connection test when used with the -t option.

1. nslookup 2. tracert 3. ping 4. netstat 5. ping 6. netstat 7. ping

A SOHO customer finds that their VoIP conversations frequently break up and become unintelligible. This happens most often when one person in the office streams video from the internet. Which of the following configuration changes on the SOHO router is MOST likely to improve the VoIP performance? A) Change QoS settings to give VoIP traffic more priority. B) Forward UDP ports 5060 - 5065 to the VoIP phone. C) Create a screened subnet and add the VoIP phone. D) Change DHCP to give the VoIP phone a static IP address.

A) Change QoS settings to give VoIP traffic more priority.

Several of your employees are experiencing limited connectivity issues when trying to access some websites on the internet from their workstations. However, they can access the local company network without any problems. You have already tried using the ip and ipconfig commands to determine that the websites can be reached and that the IP information on the workstations is configured properly. You know that the connection to your internet service provider is working properly as well. What should you do next? A) Make sure that the DNS server is functioning properly. B) Replace the workstations' network cables. C) Check for port flapping on the network switch. D) Verify that the workstations' DNS server information is correct.

A) Make sure that the DNS server is functioning properly.

A technician is installing a network-enabled smart home control system in a SOHO. Which of the following configurations is MOST likely required on the SOHO router in order to access the system from the internet? A) Port forwarding B) NAT C) QoS D) DHCP

A) Port forwarding

You are using a patch panel to connect the computers in your building to the appropriate switches, and you need to connect the Ethernet wires from the building network port cables to the patch panel. Where do you connect the wires on a patch panel? A) Yon connect the wires to the backside of the panel. B) You connect the incoming wires to the front and the outgoing wires to the back. C) You connect the wires to the frontside of the panel. D) You connect the outgoing wires to the front and the incoming wires to the back.

A) Yon connect the wires to the backside of the panel.

You work in an office that uses Linux and Windows servers. The network uses the IP protocol. You are sitting at a Windows workstation, and an application you are using is unable to connect to a Windows server named FileSrv2. Which of the following commands would work BEST to test network connectivity between your workstation and the server? (Select two.) A) ping B) arp C) tracert D) dig E) nslookup

A) ping C) tracert

You are the network administrator of a branch office for your company. The branch office network is part of a WAN that covers most of the United States. Users have been complaining that they are unable to access resources over the WAN at the main headquarters. You suspect that one of the routers between your office and the main headquarters is not working properly. Which of the following TCP/IP utilities would be BEST to use to troubleshoot the routers? A) tracert B) netstat C) nslookup D) nbtstat

A) tracert

You are currently using a cellular network plan that provides maximum speeds of up to 10 Gbps for your smart phone. Which of the following cellular network types are you using? A) 4G B) 5G C) 3G D) 2G

B) 5G

A technician receives a notification from a SOHO router manufacturer of a specific vulnerability that allows attackers to exploit SNMP traps to take over routers. The technician verifies the settings outlined in the notification. Which of the following actions should the technician take NEXT? A) Enable content filtering. B) Check for and apply firmware updates. C) Enable MAC filtering. D) Disable DHCP.

B) Check for and apply firmware updates.

You have just connected a new computer to your local network. The network uses static IP addressing. You find that the computer can communicate with hosts on the same subnet, but not with hosts on a different subnet. No other computers are having problems. Which of the configuration values would you most likely need to change? A) DNS server B) Default gateway C) Subnet mask D) IP address

B) Default gateway

You want to use hibernation on your Windows notebook. What does it need to have for this to work? A) A UPS B) Enough free hard disk space C) A minimum of 1 GB of RAM D) 1 gigahertz (GHz) or faster processor

B) Enough free hard disk space

Which of the following hardware devices regenerates a signal out to all connected ports without examining the frame or packet contents? A) Router B) Hub C) Gateway D) Bridge E) Switch

B) Hub

Which of the following issues causes variations in the latency of VoIP packets? A) QoS B) Jitter C) Port flapping D) Half duplex

B) Jitter

Which of the following locations will contribute the greatest amount of interference to a wireless access point? (Select two.) A) The top floor of a two-story building B) Near backup generators C) Near cordless phones D) Near DCHP servers E) Near exterior walls

B) Near backup generators C) Near cordless phones

Which Windows network location enables network discovery and allows files and printers to be easily shared? A) Public B) Private C) Domain D) Work

B) Private

You want to connect your internal network to an external network in order to provide internet access to your employees. Which of the following network components is designed to make this type of connection? A) Switch B) Router C) PoE D) Hub

B) Router

Which of the following identifies the network name on a wireless network? A) WPA2 passphrase B) SSID C) WEP key D) MAC address

B) SSID

A healthcare organization provides mobile clinics throughout the world and needs to transfer patients' statistical data to a central database via the internet. Which network technology would be BEST to use to ensure network connectivity for any clinic located anywhere in the world, even remote areas? A) ISDN B) Satellite C) DSL D) Dial-up E) Cable modem

B) Satellite

A laptop has a wired connection to a network and is configured with a static IP address. The link light on the NIC is lit, but the laptop cannot communicate with any hosts on the local network. Which of the following is the MOST likely cause of the issue? A) Packet collisions are preventing the laptop from sending or receiving network communications. B) The IP address conflicts with another host on the local network. C) The network settings are configured with the wrong gateway address. D) The laptop is connected to a hub instead of a switch.

B) The IP address conflicts with another host on the local network.

You have purchased a refurbished Windows laptop and have just plugged the power adapter into the wall socket to begin charging the battery. However, after several hours of charging, the laptop does not turn on. What is the MOST likely cause of the power issue? A) The Windows operating system is faulty and needs to be re-installed. B) You have been given the incorrect adapter. C) The hard drive needs to be replaced. D) One of the memory modules needs to be replaced.

B) You have been given the incorrect adapter.

You are troubleshooting network connectivity issues on a Windows workstation. Which command would you use to view the network adapter's MAC address? A) netstat B) ipconfig /all C) nslookup D) ipconfig E) ping

B) ipconfig /all

Which utility can you use to view a computer's current connections, active sessions, and ports? A) nslookup B) netstat C) ipconfig D) ping

B) netstat

Examine the following output: 4 22 ms 21 ms 22 ms sttlwa01gr02.bb.ispxy.com [154.11.10.62] 5 39 ms 39 ms 65 ms plalca01gr00.bb.ispxy.com [154.11.12.11] 6 39 ms 39 ms 39 msRwest.plalca01gr00.bb.ispxy.com [154.11.3.14] 7 40 ms 39 ms 46 ms svl-core-03.inet.ispxy.net [205.171.205.29] 8 75 ms 117 ms 63 ms dia-core-01.inet.ispxy.net [205.171.142.1] Which command produced this output? A) netstat B) tracert C) nslookup D) ping

B) tracert

A technician is installing a new SOHO wireless router. Which of the following is the FIRST thing the technician should do to secure the router? A) Press the WPS button. B) Disable SSID broadcast. C) Change the router's default password. D) Adjust the radio power levels.

C) Change the router's default password.

A technician is replacing a SOHO router and has configured DHCP to assign private IP addresses to hosts on the local network. These hosts can communicate with each other, but users can't browse the internet. Which of the following changes to the SOHO router is MOST likely to restore internet connectivity? A) Disable DHCP and configure the hosts with static IP addresses. B) Update the firmware on the SOHO router. C) Configure the SOHO router for NAT. D) Remove any QoS settings that give low priority to HTTP traffic.

C) Configure the SOHO router for NAT.

After several new computers are connected to a network device, every computer connected to the device begins to experience slow transfer speeds. Which of the following is the FIRST step to troubleshoot this problem? A) Use a loopback plug to determine whether each port on the network device is good. B) Use a loopback plug to determine whether the NIC in each computer is good. C) Determine whether the network device is a hub or a switch. D) Use a cable tester to determine whether all cables between each computer and the device are good.

C) Determine whether the network device is a hub or a switch.

A technician is installing a SOHO router at an after-school community center. The customer would like to keep children from accessing inappropriate content while browsing the web. Which of the following actions would help accomplish this goal? A) Disable SSID broadcast. B) Disable DHCP. C) Enable content filtering. D) Update the firmware.

C) Enable content filtering.

You have subscribed to a satellite radio service that you use in your car to access music and news on long trips through areas where cellular service is not available. However, when going through long tunnels and heavily forested canyons, you sometimes lose your signal for a short period of time. Which of the following satellite technologies is your service provider using? A) ADSL B) LEO C) GEO D) SDSL

C) GEO

Which of the following BEST describes the purpose of the USB Selective Suspend feature? A) The USB Selective Suspend feature suspends power to any attached USB devices when the system hibernates. B) If a USB device is not in use, the USB Selective Suspend feature lets you selectively suspend power to a port. C) If a USB device is not in use, the USB Selective Suspend feature stops providing power to the port. D) The USB Selective Suspend feature monitors and logs how long USB devices are powered on.

C) If a USB device is not in use, the USB Selective Suspend feature stops providing power to the port.

You manage a network that has multiple internal subnets. You connect a workstation to the 192.168.1.0 subnet, which uses the default subnet mask. This workstation can communicate with some hosts on the private network, but not with other hosts. You run ipconfig /all and see the following: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : mydomain.local Description . . . . . . . : Broadcom network adapter Physical Address. . . . . . : 00-AA-BB-CC-74-EF DHCP Enabled . . . . . . . : No Autoconfiguration Enabled. . . : Yes IPv4 Address . . . . . . . : 192.168.1.102(Preferred) Subnet Mask. . . . . . . . : 255.255.0.0 Default Gateway . . . . . . : 192.168.1.1 DNS Servers . . . . . . . : 192.168.1.20 192.168.1.27 Which of the following is the MOST likely cause of the problem? A) Incorrect default gateway B) Incorrect IP address C) Incorrect subnet mask D) Incorrect DNS server address

C) Incorrect subnet mask

Which of the following is a disadvantage of using a Lithium Ion (Li-Ion) battery over a Nickel Metal Hydride (NiMH) battery? A) Li-Ion batteries develop a memory, while NiMH batteries do not. B) Li-Ion batteries are more heat-sensitive than NiMH batteries. C) Li-Ion batteries have a shorter lifespan than NiMH batteries. D) Li-Ion batteries take up more physical space than NiMH batteries.

C) Li-Ion batteries have a shorter lifespan than NiMH batteries.

A technician determines that an older network hub that connects 24 workstations is performing poorly due to excessive network collisions. Which of the following network devices would be the BEST replacement? A) Router B) Bridge C) Switch D) Patch panel

C) Switch

Which of the following are options for connecting a computing device, such as a notebook computer or tablet, to a cellular network? (Select four.) A) Use a USB cable to connect the device to the cellular network through a cable modem. B) Use the device's Wi-Fi to connect to the cellular network through a cable modem's Wi-Fi antenna. C) Use a USB cable to connect the device to the network through a smartphone. D) Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot. E) Use a USB transmitter to connect the device directly to the cellular network through a satellite. F) Use an integrated cellular antenna to connect the device directly to the cellular network. G) Use a USB cellular adapter to connect the device directly to the cellular network. H) Use an integrated transmitter to connect the device directly to the cellular network through a satellite.

C) Use a USB cable to connect the device to the network through a smartphone. D) Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot. F) Use an integrated cellular antenna to connect the device directly to the cellular network. G) Use a USB cellular adapter to connect the device directly to the cellular network.

You are troubleshooting network connectivity issues on a workstation. Which command would you use to request new IP configuration information from a DHCP server? A) ipconfig /all B) net use C) ipconfig /renew D) net config

C) ipconfig /renew

You have had several employees call the help desk where you work, complaining that they are not able to reach the www.widgets.com server. To help troubleshoot this issue, you decide to run a variety of commands. Which of the following commands is MOST likely to return the IP address of the desired server? A) ipconfig widgets B) ipconfig www.widgets.com C) ping www.widgets.com D) ipconfig /all

C) ping www.widgets.com

You have just purchased a used laptop, and you want to configure it to hibernate when you press the power button. You edit the Power Options settings and enable hibernation. Then you configure the power button to trigger hibernation. Everything works fine for several weeks. One day, when you press the power button, the laptop does not hibernate. Which of the following will BEST resolve this issue? A) Charge the battery before pressing the power button. B) Enable ACPI support in the BIOS. C) Configure the laptop to use the Max Battery power scheme. D) Free up disk space.

D) Free up disk space.

Which ACPI power state allows a system to start where it left off, but turns all other components off? A) Standby B) Off C) Working D) Hibernate

D) Hibernate

A user reports that they cannot browse to a specific website on the internet. From their computer, you find that a ping test to IP address of the web server succeeds. A tracert test shows 17 hops to the destination web server. What is the most likely cause of the problem? A) Duplicate IP addresses B) Incorrect default gateway address C) Incorrect subnet mask value D) Incorrect DNS server address

D) Incorrect DNS server address

You manage a network that has multiple internal subnets. You connect a workstation to the 192.168.1.0 subnet using the default subnet mask. This workstation can communicate with some hosts on the private network, but not with other hosts. You run ipconfig /all and see the following: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : mydomain.local Description . . . . . . . : Broadcom network adapter Physical Address. . . . . . : 00-AA-BB-CC-74-EF DHCP Enabled . . . . . . . : No Autoconfiguration Enabled. . . : Yes IPv4 Address . . . . . . . : 192.168.1.102(Preferred) Subnet Mask . . . . . . . : 255.255.255.0 Default Gateway. . . . . . . . . : 192.168.2.1 DNS Servers. . . . . . . . . . . : 192.168.2.20 Which of the following is the MOST likely cause of the problem? A) Incorrect subnet mask B) Incorrect IP address C) Incorrect DNS server address D) Incorrect default gateway

D) Incorrect default gateway

Which of the following battery types offers the greatest storage capacity in the smallest amount of space? A) Nickel Cadmium (NiCad) B) Carbon C) Nickel Metal Hydride (NiMH) D) Lithium Ion (Li-Ion)

D) Lithium Ion (Li-Ion)

You are an IT technician for your company. Your boss has asked you to set up and configure a wireless network to service all of the conference rooms. Which of the following features lets you allow or reject client connections by hardware address? A) WPA2 B) WEP C) SSID D) MAC address filtering

D) MAC address filtering

You have just installed a wireless network, but the network is experiencing slow speeds, especially when accessing the internet from your workstation. Which action should you try FIRST to resolve the issue? A) Reset your wireless router to the factory defaults. B) Move your workstation closer to the wireless access point. C) Add a network extender. D) Move the wireless access point.

D) Move the wireless access point.

Currently, your company is in the process of upgrading security in the company headquarters building by installing biometric sensors to limit access to specific rooms. Your network switches are PoE-enabled, which allows biometric sensors to connect to switches without an external power source. Which of the following PoE standards is designed for use with biometric sensors? A) Higher-power PoE B) Standard PoE C) PoE++ D) PoE+

D) PoE+

Which of the following is a common cause for high latency issues on a network? A) Limited connectivity B) A bad switch or router C) Malware D) Port flapping

D) Port flapping

While servicing your laptop, you notice that your Lithium Ion battery is swelling. What is the BEST action you can take to resolve the situation? A) Remove the battery and cool it down. B) Check the battery's voltage. C) Check the battery again in a few days. D) Replace the battery.

D) Replace the battery.

Which of the following is a specialized controller that you can use to remotely manage all your network devices? A) VLAN B) SSH C) PoE D) SDN

D) SDN

From your Windows laptop, you have been working on a large project that has required you to open a lot of items (programs, files, etc.). It is time to leave the office and make the two-hour journey home. You will be working on this project a bit more when you arrive at home. Your computer's battery is failing and only has a very short life span (about one hour) before your computer loses power. When you arrive home and open the laptop lid, nothing happens. After plugging in your computer and powering it on, you find that all of your programs and files have been closed. To troubleshoot, you open Control Panel and navigate to the settings that control what your computer will do when the laptop lid is closed. Which of the following power settings MUST you choose to prevent the same problem in the future? A) When I close the lid: Shut down B) When I close the lid: Standby C) When I close the lid: Sleep/Suspend D) When I close the lid: Hibernate

D) When I close the lid: Hibernate

You are the computer specialist for a small business. Your company server is named FS1 and has an IP address of 10.0.0.2. The hardware in your company server has started to experience intermittent failures, so you transfer the shares on the server to a spare server and take the main server offline. The spare server has an IP address of 10.0.0.3. You edit the existing A record for FS1 on your company's DNS server and redirect the hostname to the spare server's IP address of 10.0.0.3. Afterward, most users are able to access the shares on the spare server by hostname, but several users cannot. Instead, they see an error message indicating that the FS1 server cannot be found. Enter the command you can run from Command Prompt on these workstations that will allow them to access the shares on FS1 without performing a full restart.

ipconfig /flushdns