Friday, August 26, 2016

Pass4sure 640-722 Question Answer

Which type of frames are ACK and CF-ACK?

A. control
B. management
C. RTS/CTS
D. association

Answer: A


How does an LWAP receive a configuration file?

A. It is configured manually.
B. It receives a configuration from the controller.
C. It automatically ships with a configuration.
D. It receives a configuration from a TFTP server.

Answer: B

Sunday, July 10, 2016

Pass4sure 640-722 Question Answer

Which three items are allowed on an Ethernet trunk port? (Choose three.) 

A. autonomous AP
B. FlexConnect AP
C. local AP
D. monitor AP
E. rogue detector AP
F. sniffer AP
G. SE-Connect AP
H. Cisco WLC

Answer: A, B, E

Monday, June 6, 2016

Pass4sure 640-722 Question Answer

If an antenna has a dBd of 8.6, what is the dBi value?

A. 6.2
B. 6.46
C. 8.6
D. 10.74
E. 12.88

Answer: D


Which calculation computes the EIRP of an antenna? 

A. EIRP = Tx power (dBm) + Antenna Gain (dBi) - Cable Loss (dB)
B. EIRP= Cable Loss (dB)+ Antenna Gain (dBi) - Tx power (dBm)
C. EIRP = Cable Loss (dB)+ Antenna Gain (dBi) / Tx power (dBm)
D. EIRP = Tx power (dBm) + Antenna Gain (dBi) / Cable Loss (dB)
E. EIRP = Antenna Gain (dBi) - Cable Loss (dB) * Tx power (dBm) F. EIRP = Tx power (dBm) * Antenna Gain (dBi) / Cable Loss (dB)

Answer: A

Thursday, May 5, 2016

Cisco Subscription Software Growth, Dividends Are Bright Spots

Cisco Systems (CSCO) stock has bounced back nearly 20% since Feb. 11 and while there could be more upside in 2016, weaker spending by telecom customers could impact April-quarter results, says Pacific Crest Securities.

Cisco is scheduled to report earnings for its fiscal Q3 ended April 30 on May 16, after the close.

“We believe large-cap investors should continue to overweight CSCO, even after the stock has climbed 22% off  lows (now 19%), based on a favorable risk/reward ratio and the prospects for ‘The Rise of the Digital CEO’ theme to emerge as a new tailwind to drive share gains in the coming year,” Pac Crest analyst Brent Bracelin said in a research report.

He says Cisco is well positioned to capitalize as CEOs and corporate boards take on a bigger role in IT (information technology) decision-making.

Cisco stock is about even in 2016, but it was down 2% in early trading in the stock market today, and touched a nearly two-month low below 27. Cisco has a so-so IBD Composite Rating of 62 out of a possible 99.

The network gear maker’s growing software revenue is a bright spot, contends Bracelin.

“Cisco’s new leadership team continues to streamline operations and drive the model toward a higher mix of software subscriptions,” he wrote. “This, in turn, is slowly helping insulate profits during challenging periods, in our view.”

He expects Cisco to remain acquisitive even as shareholder returns increase. Cisco has nearly $36 billion in cash and investments on its balance sheet.

“Cisco recently raised its dividend by 24%, which currently equates to a 3.8% dividend yield,” said Bracelin in a report. “The only mega-tech companies with higher yield are telecom companies Verizon Communications (VZ) and AT&T (T). The $15 billion buyback is another avenue of shareholder return.”

Sunday, April 3, 2016

Pass4sure 640-722 Question Answer

The network administrator receives complaints of slow wireless network performance and performs a sniffer trace of the wireless network in preparation for migration to 802.11n. The sample capture shows frames that contains AP beacons with NonERP_Present bit set to 1 and frames with RTS/CTS. Which two conclusions can be interpreted from these frames? (Choose two.)

A. The network is performing slowly because 802.11n clients are already mixed with 802.11g clients.
B. The network is performing slowly because 802.11b clients still exist in the network.
C. The network is performing slowly because a wireless client is incorrectly configured, which results in RF interference.
D. Possible 802.11b wireless clients are located only in the AP cell radius where the sniffer capture was performed.
E. Possible 802.11b wireless clients could be located anywhere in the wireless network.

Answer: B, E                                                      


How many dBm is 40 mW?

A. 10 dBm
B. 16 dBm
C. 20 dBm
D. 22 dBm
E. 40 dBm

Answer: B

Tuesday, March 1, 2016

Pass4sure 640-722 Question Answer

Which statement about ZigBee technology is true?

A. It has low power consumption.
B. It is designed only for point-to-point communications.
C. It ranges up to 250 meters.
D. It supports data rates up to 1 and 2 Mb/s.

Answer: A


Which four options are the characteristics of the original 802.11 protocol? (Choose four.)

A. Defined DSSS and FHSS as possible methods for modulation
B. Designed to operate in the 5 GHz ISM frequency spectrum
C. The most common deployment is three non-overlapping channels that are 20 MHz wide
D. The protocol sets the maximum throughput at 1 Mb/s or 2 Mb/s
E. Defined FHSS and OFDM as possible methods for modulation
F. The most common deployment is three non-overlapping channels that are 22 MHz wide
G. Designed to operate in the 2.4 GHz ISM frequency spectrum
H. The protocol sets the maximum throughput at 1 Mb/s

Answer: A, D, G, F

Thursday, January 28, 2016

Pass4sure 640-722 Question Answer

Which three items do you need to establish a wireless connection to an enterprise wireless network? (Choose three.) .

A. SSID name
B. RF channel
C. RF signal
D. 802.1X/EAP credentials
E. pre-shared key
F. web page
G. WPA/WPA2 settings

Answer: A, C, D