Chapter 13

11 September 2022
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23 test answers

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question
You have a small wireless network that uses multiple access points. The network uses WPA and broadcasts the SSID. WPA2 is not supported by the wireless access points. You want to connect a laptop computer to the wireless network. Which of the following parameters will you need to configure on the laptop?
answer
1) TKIP encryption 2) Preshared key
question
You are troubleshooting a network communication problem to the www.widgets.com server. Which of the following will give you the IP address of that server?
answer
1) nslookup www.widgets.com 2) ping www.widgets.com
question
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. The workstation can communicate with some hosts on the private network, but not with other hosts. You run ipconfig /all and see the following: [...] What is the most likely cause of the problem?
answer
Incorrect subnet mask [255.255.0.0]
question
Given that your Windows workstation has Automatic Private IP Addressing (APIPA) implemented using default settings, which of the following TCP/IP addresses could be automatically assigned to the system should your DHCP server go down or become inaccessible?
answer
169.254.1.26
question
A user reports that he can't browse to a specific Web site on the Internet. From his computer, you find that a ping test to the Web server succeeds. A trace route test shows 17 hops to the destination Web server. What is the most likely cause of the problem?
answer
Incorrect DNS server address
question
You are designing an update to your client's wireless network. The existing wireless network uses 802.11b equipment, which your client complains runs too slowly. She wants to upgrade only the wireless access points in the network this year. Next year, she will upgrade the wireless network boards in her users' workstations. She has also indicated that the system must continue to function during the transition period. Which 802.11 standard will work best in this situation?
answer
802.11n
question
You are designing a wireless network for a client. Your client needs the network to support a data rate of at least 54 Mbps. In addition, the client already has a wireless telephone system installed that operates 2.4 GHz. Which 802.11 standards will work best in this situation?
answer
1) 802.11n 2) 802.11a
question
Which of the following commands verifies that TCP/IP is working correctly on the local computer?
answer
ping 127.0.0.1
question
You're trying to access your office network with your Windows workstation from home using your organization's virtual private network (VPN). Your DSL modem has connected to your ISP, but you can't connect to your office network. You issue the ipconfig command from the command prompt and learn that your system has been assigned an IP address of 169.254.1.12. What's causing the problem?
answer
Your ISP's DHCP server isn't working properly.
question
You are troubleshooting connectivity between your computer and the www.widgets.com server whose IP address is 192.168.1.1. Which of the following commands tests connectivity to the device as well as name resolution?
answer
ping www.widgets.com
question
You administer a network with Windows and Linux servers, and Windows 7 clients. A user calls and indicates that he is unable to access resources on the network. You type ipconfig on the user's computer and receive the following output: [...] You check your NIC and see the link light on. What might the problem be?
answer
Unavailable DHCP server [Default Gateway.....: ]
question
You have a small home network that uses 192.168.1.0 with the default subnet mask for the network address. The default gateway address is 192.168.1.254, and the router is providing DHCP on the network. The Wrk2 computer has been assigned the IP address of 192.168.1.55. Which of the following is considered the loopback address for the Wrk2 computer?
answer
127.0.0.1
question
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: [...] What is the most likely cause of the problem?
answer
Incorrect default gateway [192.168.2.1]
question
You have just connected a new computer to your 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 a problem. Which of the configuration values would you most likely need to change?
answer
Default gateway
question
You have a small wireless network with less that 50 client computers. You upgraded the hardware on two wireless devices so you can use a better security standard than WEP. Now you need to implement the new security standard. You need the greatest amount of security with the least amount of effort, and without replacing any of the wireless infrastructure. What should you do?
answer
1) Configure each client with the same key 2) Implement WPA2-AES
question
You have been contracted by OsCorp to recommend a wireless Internet solution. The wireless strategy must support a transmission range of 150 feet, use a frequency range of 2.4 GHz, and provide the highest possible transmission speeds. Which of the following wireless solutions would you recommend?
answer
802.11n
question
You are troubleshooting network connections on a Windows workstation and you want to view a list of connections on the computer. How can you do this?
answer
1) On the Start menu, click Control Panel, then click Network and Internet 2) On the Start menu, right-click Network and select Properties
question
While troubleshooting a network issue, you successful ping the 127.0.0.1 IP address. Which of the following is true?
answer
The TCP/IP protocol suite is working correctly on the local computer.
question
Your home network is connected to the Internet through a 512 Mbps DSL line. Your ISP provided you with a small office/home office (SOHO) router that provides four 100 Mbps Ethernet ports for your home office and one DSL port for connecting the network to the Internet. The SOHO router has a built-in DHCP server that is used to automatically configure workstations with an IP address, default gateway address, and DNS server address. However, today you are unable to access the Internet. The browser reports that it can't find the URLs you are requesting. Using the ipconfig command, you've verified that the workstation is receiving correct IP address parameters. You tried entering tracert 137.65.1.2 at a command prompt and found that you're able to reach this server on the Internet without any issues. What is causing this problem?
answer
Your ISP's DNS server is down
question
Which wireless standard has the highest data transfer rates?
answer
802.11n
question
In which of the following situations would reverting to a System Restore point be the best option?
answer
You recently installed a new application and now the system behaves erratically
question
In which of the following situations would restoring from a system image be the best option?
answer
You need to restore a Windows system after a hard drive failure
question
When you load a partition management utility on a workstation running an OEM version of Windows 7, you notice that there is a hidden partition on the workstation's hard drive. You decide to delete it to free up space on the drive. Should you do this?
answer
No, this is the system's recovery partition