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多选题
A client states they are receiving poor signal strength on their wireless Internet connection. Which of the following is MOST likely causing the interference?（）
A
Cordless phones
B
Drywall
C
Access points
D
Microwaves
E
Fluorescents lights
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A client states they are receiving poor signal strength on their wireless Internet connection. Which of the following is MOST likely causing the interference?（）A、Cordless phonesB、DrywallC、Access pointsD、MicrowavesE、Fluorescents lights
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To control the execution of a server process when it is receiving bad packets from a potentially malicious client, you set the SEC_PROTOCOL_ERROR_FURTHER_ACTION initialization parameter as follows: SQL ALTER SYSTEM SET SEC_PROTOCOL_ERROR_FURTHER_ACTION = Drop,10; What is the significance of this setting?（）A、It terminates the client connection after 10 bad packets and the client cannot reconnect to the same instance.B、It terminates the client connection after 10 bad packets but the client can still reconnect, and attempt the same operation again.C、It terminates the client connection 10 seconds after receiving a bad packet and the client cannot reconnect to the same instance.D、It terminates the client connection after receiving a bad packet and the client can reconnect to the same instance after 10 minutes.
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An application or user experiences poor performance， yet examination of the nfsstat -c output indicates no or very few timeouts and retransmits. This means that the client is receiving responses from the server as fast as it is asking for them. What is the first thing to be checked？（）A、There is an appropriate number of NFS daemons running on the server machineB、There is an appropriate number of biod daemons running on the client machineC、The server is not CPU boundD、There is an appropriate number of biod daemons running on the server machine
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Which signal and noise values will result in the best phone communication with an access point？（）A、 Signal strength 0dBm， noise level 6dBmB、 Signal strength 8dBm， noise level 9dBmC、 Signal strength 4 dBm， noise level 4 dBmD、 Signal strength 6dBm， noise level 5 dBm
考题
By how much is a signal’s strength reduced when the signal passes through an object thatintroduces 3 dB of attenuation？（）A、1/6B、1/4C、1/3D、1/2
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Which signal and noise values will result in the best phone communication with an access point?（）A、signal strength 46dBm, noise level 95dBmB、signal strength 74dBm, noise level 94dBmC、signal strength 68dBm, noise level 79dBmD、signal strength 50dBm, noise level 56dBm
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You are the Cisco Network Designer in Cisco.com. Which signal and noise values will result in thebest phone communication with an access point？（）A、 signal strength 5dBmB、 signal strength 6dBmC、 noise level 4dBmD、 noise level 5dBm
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A user states that they are trying to project their laptop to a screen for a presentation. They have plugged the projector cable into their laptop, and turned the projector on, but no signal is found. Which of the following should the technician perform FIRST?（）A、Ensure the projector is receiving powerB、Verify the laptop is not running on batteryC、Toggle the function key for displaysD、Replace the projector cable with another
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A customer has a wireless router installed in their home office. The customer is having issues with signal strength at the opposite end of the house. Which of the following is the BEST option to increase the signal strength?（）A、Install a high gain antenna focused towards the office wall.B、Run CAT5e cable to all of the rooms that have poor signal strength.C、Install a wireless repeater at the far end of the house.D、Install a second wired router in the far end of the house.
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单选题Refer to the exhibit. A Cisco Aironet Wireless LAN Client Adapter has been installed and configured through the ADU on the PC. The Aironet System Tray Utility （ASTU） has been enabled during the installation and the icon appears in the system tray area in the lower right of the desktop. What is thesignificance of the icon？（）A
It indicates that the radio of the client adapter is disabledB
It indicates that the client adapter is not associated to an access point or another clientC
It indicates that the client adapter is associated to an access point or another client， but the user is not EAP authenticatedD
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is excellent or goodE
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is fairF
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is poor
考题
单选题Which signal and noise values will result in the best phone communication with an access point?（）A
signal strength 46dBm, noise level 95dBmB
signal strength 74dBm, noise level 94dBmC
signal strength 68dBm, noise level 79dBmD
signal strength 50dBm, noise level 56dBm
考题
单选题To control the execution of a server process when it is receiving bad packets from a potentially malicious client, you set the SEC_PROTOCOL_ERROR_FURTHER_ACTION initialization parameter as follows: SQL ALTER SYSTEM SET SEC_PROTOCOL_ERROR_FURTHER_ACTION = Drop,10; What is the significance of this setting?（）A
It terminates the client connection after 10 bad packets and the client cannot reconnect to the same instance.B
It terminates the client connection after 10 bad packets but the client can still reconnect, and attempt the same operation again.C
It terminates the client connection 10 seconds after receiving a bad packet and the client cannot reconnect to the same instance.D
It terminates the client connection after receiving a bad packet and the client can reconnect to the same instance after 10 minutes.
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单选题Refer to the exhibit. A Cisco Aironet Wireless LAN Client Adapter has been installed and configured through the ADU on the PC. The Aironet System Tray Utility （ASTU） has been enabled during the installation and the icon appears in the system tray area in the lower right of the desktop. What is the significance of the icon？（）A
It indicates that the radio of the client adapter is disabled.B
It indicates that the client adapter is not associated to an access point or another client. C
It indicates that the client adapter is associated to an access point or another client， but the user is not EAP authenticated.D
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is excellent or good.E
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is fair.F
It indicates that the client adapter is associated to an access point or another client， that the user is authenticated if the client adapter is configured for EAP authentication， and that the signal strength is poor.
考题
单选题An application or user experiences poor performance， yet examination of the nfsstat -c output indicates no or very few timeouts and retransmits. This means that the client is receiving responses from the server as fast as it is asking for them. What is the first thing to be checked？（）A
There is an appropriate number of NFS daemons running on the server machineB
There is an appropriate number of biod daemons running on the client machineC
The server is not CPU boundD
There is an appropriate number of biod daemons running on the server machine
考题
单选题I read you with signal strength（）.A
barely perceptibleB
bare perceptibleC
barely perceptiblyD
bare perceptibly
考题
单选题What does a broad-spectrum interferer lower？（）A
SNRB
noise floorC
level of interferenceD
Received Signal Strength Indicator
考题
单选题We（）the distress signal on our own radio before the shore station relayed it to us.A
received alreadlyB
have receivedC
had receivedD
was receiving
考题
单选题By how much is a signal’s strength reduced when the signal passes through an object thatintroduces 3 dB of attenuation？（）A
1/6B
1/4C
1/3D
1/2
考题
判断题RSSI是Received Signal Strength Indicator的英文缩写。A
对B
错
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