An administrator receives reports from users in an office that their 802.11g wireless connectivity has been problematic since the installation of the new wireless phone system. At which of the following frequencies are both systems operating at to cause

第1题：

第2题：

An administrator is troubleshooting a problem on an application server, but has not determined the cause of the problem and is not able to replicate the problem. Which of the following should the administrator do prior to escalating the issue?（）

• A、Gather information from users.
• B、Reboot the server.
• C、Apply the latest service packs to the operating system.
• D、Perform a root cause analysis

第3题：

A single 802.11g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem (Choose three.)（）。

• A、mismatched TKIP encryption
• B、null SSID
• C、cordless phones
• D、mismatched SSID
• E、metal file cabinets
• F、antenna type or direction

第4题：

A company has a business application that provides its users with many different reports： receivables reports， payables reports， revenue projects， and so on. The company has just purchased somenew， state-of-the-art， wireless printers， and a programmer has been assigned the task of enhancing all ofthe reports to use not only the company’s old printers， but the new wireless printers as well. When the programmer starts looking into the application， the programmer discovers that because of the design of theapplication， it is necessary to make changes to each report to support the new printers. Which two designconcepts most likely explain this situation？ （）

• A、Inheritance
• B、Low cohesion
• C、Tight coupling
• D、High cohesion
• E、Loose coupling
• F、Object immutability

第5题：

All users within an office are wirelessly connected to a network, except one user that has a valid connection on a leased IP address in a different range. Which of the following is a possible cause of the user having a different IP address range?（）

• A、The wireless access point is using MAC address filtering
• B、The user has connected to a nearby wireless access point from another office
• C、The user has configured the wireless settings with the wrong encryption type
• D、The wireless access point has SSID broadcast disabled

第6题：

A user states that the wireless router keeps rebooting while the power to the other equipment stays on. Which of the following should the technician perform to prevent users from rebooting the router?（）

• A、Change the default administrator password
• B、Change the IP range of the wireless network
• C、Hide the SSID
• D、Disable WEP

第7题：

A company has implemented a wireless network for its employees. Since implementing the new network, individuals have been receiving duplicate IP addresses causing network issues. Which of the following would resolve this issue?（）

• A、Add another wireless access point.
• B、Add another DHCP server.
• C、Disable the wireless DHCP server.
• D、Change the default gateway of the wireless router

第8题：

An administrator is troubleshooting a problem on an application server， but has not determined the cause of the problem and is not able to replicate the problem.  Which of the following should the administrator do prior to escalating the issue？（）

• A、 Gather information from users.
• B、 Reboot the server.
• C、 Apply the latest service packs to the operating system.
• D、 Perform a root cause analysis.

第9题：

A company has a business application that provides its users with many different reports： receivables reports， payables reports， revenue projects， and so on.The company has just purchased some new， state-of-the-art，wireless printers， and a programmer has been assigned the task of enhancing all of the reports to use not only the company’s old printers， but the new wireless printers as well.When the programmer starts looking into the application， the programmer discovers that because of the design of the application， it is necessary to make changes to each report to support the new printers.  Which two design concepts most likely explain the situation？（）

• A、Inheritance
• B、Low cohesion
• C、Tight coupling
• D、High cohesion
• E、Loose coupling
• F、Object immutablility

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第14题：

A single 802.11g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem?（）

• A、mismatched TKIP encryption
• B、null SSID
• C、cordless phones
• D、mismatched SSID
• E、metal file cabinets
• F、antenna type or direction

第15题：

After a technician replaces a laptop display, the technician now notices that the wireless no longer works. Which of the following would be the MOST likely cause？（）

• A、The wireless switch was damaged during the display installation.
• B、The network card has failed.
• C、The new display is interfering with the wireless signal.
• D、The antenna connector was not reconnected.

第16题：

An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）

• A、802.1 1g
• B、802.1X
• C、802.11n
• D、802.11b

第17题：

Users are unable to stay connected to the company's wireless network. Several times throughout the day the users' signals are dropped and they are forced to reconnect to the network. A technician determines the network cabling that supplies the WAP has been run inside with several power lines. Which of the following is the MOST likely cause of the network issue?（）

• A、Ashort
• B、Open pairs
• C、ESD
• D、EMI

第18题：

A company has installed a new 802.11g point-to-point connection between two buildings and isexperiencing low throughput across the link. The current setup involves a wireless bridge on the roof with an omni-directional antenna. Which of the following would BEST improve the link performance?（）

• A、Replace the wireless bridges with wireless access points.
• B、Install bi-directional amplifiers at both sites.
• C、Configure channel hopping on both wireless bridges.
• D、Replace the omni-directional antennas with Yagi antennas

第19题：

A user reports sporadic connectivity with their wireless connection. A technician determines the wireless speed reported by the laptop to be 1Mbps. Which of the following is the MOST likely cause of this issue?（）

• A、The client does not support 802.11n
• B、Incorrect frequency on the client is being used
• C、Incorrect encryption on the AP
• D、The client distance from the AP

第20题：

A technician installed a new wireless access point on an existing small office home office (SOHO) network with a selective security option enabled. All wireless computers connect to the new network except one computer that cannot connect to the wireless network. Which of the following is the cause?（）

• A、The network uses MAC filtering
• B、The network uses WEP
• C、The network uses SSID broadcast
• D、The network uses WPA

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