单项选择题
Refer to the exhibit. The signal transmitted from the AP is reflected off a wall resulting in multipath interference at the client end.
Which statement is true？ （）
A. The transmitted signal from the AP arrives at the client at slightly different times resulting in phase shifting.
B. If signal 2 is close to 360 degrees out of phase with signal 1， the result is essentially zerosignal or a dead spot in the WLAN.
C. Multipath interference is less of an issue when using a DSSS technology because multipath is frequency selective.
D. If signal 1 is in phase with signal 2， the result is essentially zerosignal or a dead spot in the WLAN.
E. Multipath interference is solved by using dual antennas.
相关考题
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单项选择题
You work as a network technician at Company. Please study the exhibit carefully. In this Company wireless network， the LAP （lightweight access point） attempts to register to a WLC （Wireless LAN Controller）. What kind of message is transmitted？（）
A. The lightweight access point will send Layer 2 and Layer 3 Lightweight Access Point （LWAPP） mode discovery request messages at the same time.
B. The lightweight access point will send Layer 3 Lightweight Access Point （LWAPP） mode discovery request messages only.
C. The lightweight access point will send Layer 2 Lightweight Access Point （LWAPP） mode
D.iscovery request messages. If the attempt fails， the LAP will try Layer 3 LWAPP WLC discovery. D. The lightweight access point will send Layer 2 Lightweight Access Point （LWAPP） mode discovery request messages only. -
单项选择题
LDAP is being used throughout the Company wireless network. Which statement about the Lightweight Access Point Protocol （LWAPP） protocol is true？（）
A. The processing of 802.11 data and management protocols and access point capabilities is distributed between a lightweight access point and a centralized WLAN controller.
B. LWAPP advertises its WDS capability and participates in electing the best WDS device for the wireless LAN.
C. LWAPP aggregates radio management forward information and sends it to a wireless LAN solution engine.
D. LWAPP authenticates all access points in the subnet and establishes a secure communication channel with each of them.
E. None of the other alternatives apply -
单项选择题
Refer to the exhibit. Both host stations are part of the same subnet but are in different VLANs. On the basis of the information presented in the exhibit， which statement is true about an attempt to ping from host to host？ （）
A. The two different hosts will need to be in the same VLAN in order for the ping command to be successful.
B. A Layer 3 device is needed for the ping command to be successful.
C. The ping command will be successful without any further configuration changes.
D. A trunk port will need to be configured on the link between Sw_A and Sw_B for the ping command to be successful.
