CWNA-106試験無料問題集（140題）「CWNP Certified Wireless Network Administrator 認定」

出題：1

Return Loss is the decrease of forward energy in a system when some of thepower is being reflected back toward the transmitter.
What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?

A. An impedance mismatch between components in the RF system

B. A Voltage Standing Wave Ratio (VSWR) of 1:1

C. High output power at the transmitter and use of a low-gain antenna

D. The use of cables longer than onemeter in the RF system

正解：A 解答を投票する

出題：2

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing
(OFDM) in IEEE 802.11 WLANs?

A. With 802.11a OFDM, 16-QAM provides either 48 or 54 Mbps data rates, dependingupon coding rates.

B. 802.11ac VHT-OFDM utilizes 256-QAM, which increases the data rate significantlyover
64-QAM available in HT-OFDM.

C. In 802.11a OFDM, fifty-six (56) subcarriers are used as parallel symbol transmission paths to carry data.

D. 802.11a/g/n OFDM includes several combinations of modulation and coding to achieve data rates from 1-600 Mbps.

E. 802.11a and 11n use six (6) "pilot" subcarriers as a reference for thereceiver to detect frequency and phase shifts of the signal.

正解：B 解答を投票する

出題：3

What features were introduced in the IEEE 802.11h amendment in order to uphold regulatory requirements for 5 GHz operation? (Choose 2)

A. 256-QAM

B. Dynamic Frequency Selection (DFS)

C. Radio Resource Management (RRM)

D. Phase Shift Keying (PSK)

E. Transmit Power Control (TPC)

F. DistributedCoordination Function (DCF)

正解：B,E 解答を投票する

出題：4

You are being interviewed by ABC Company for employment as a wireless site surveyexpert. The interviewing manager asks you what items should be included in a site survey report generated as part of a manual site survey process.
What answer would be accurate?

A. Itemized list of equipment, licenses, and support contracts required forthe facility

B. RF heat map illustrating coverage and signal quality for each frequency band

C. Documentation noting how each WLAN user group will authenticate to the network

D. Documentation proving proper entry of wall material types into the site survey software

正解：B 解答を投票する

出題：5

What information is transmitted in the Beacon management frames of an HT access point to communicate about backward compatibility with ERP andHR/DSSS stations? (Choose
2)

A. RIFS mode

B. Secondary channel offset

C. HT Protection mode

D. Power save mode of clients

正解：C 解答を投票する

出題：6

The OSI model is a 7-layer model forunderstanding the functions of a communication system. What OSI sublayers are specifically addressed by the IEEE 802.11-2012 standard? (Choose 2)

A. MAC

B. IP

C. PPDU

D. Transport

E. PLCP

F. Network

正解：A,E 解答を投票する

出題：7

ABC Company has just purchased a 6 dBi patch antenna. After performing some testswith the 6 dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor courtyard. When choosing an antenna with higher gain, what other antenna characteristic will also always change?

A. Beamwidth

B. Maximum input power

C. Fresnel Zone size

D. VSWR Ratio

E. Impedance

正解：A 解答を投票する

出題：8

What feature(s) are most likely to be supported by 802.11 enterprise-class WLAN controllers? (Choose 4)

A. IGMP snooping

B. 802.1p and DSCP QoS

C. BGP and Frame Relay

D. Captive web portals

E. Link aggregation / port trunking

正解：A,B,D,E 解答を投票する

出題：9

What statements describe industry practices for communication protocols between
WLANcontrollers and controller-based APs? (Choose 2)

A. All vendors support at least one L2 or L3 broadcastprotocol for controller discovery by controller-based APs.

B. Some vendors use proprietary protocols, and some vendorsuse protocols based on public standards like RFCs.

C. For most vendors, the controller-based APs maintain data and control tunnels with at least two controllers for immediate failover and redundancy.

D. All vendors use the same protocol so that APs will interoperate with WLAN controllers from other vendors.

E. All vendors recommend using L2 (instead of L3) controller discovery and tunneling protocols in large enterprises.

正解：A,B 解答を投票する

出題：10

What statements about the SSID are true? (Choose 2)

A. The SSID is a security session identifierused in RSNs.

B. When configuring a new network, creating an SSID is optional.

C. The SSID is an alphanumeric value assigned to device manufacturers by the IEEE.

D. The SSID is a pseudo-random number assigned to each client by an AP.

E. The SSID must be included in an association request frame.

F. The SSID is an alphanumeric value with a maximum length of 32 octets.

正解：E,F 解答を投票する

CWNA-106試験無料問題集「CWNP Certified Wireless Network Administrator 認定」