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NEW QUESTION: 1
A. From Windows PowerShell, run the Enable-DnsServerPolicy cmdlet.
B. From Event Viewer, configure DNS-Server Applications and Services Logs.
C. From DNS Manager, configure Event Logging.
D. From Local Group Policy Editor, configure Audit Policy.
E. From DNS Manager, configure Monitoring.
Answer: B
Explanation:
Explanation
References:
https://www.yourdigitalmind.com/tutorials/how-to-enable-dns-logging-and-diagnostics-in-windows-server-2012
NEW QUESTION: 2
Which statement presents a valid reason for configuring a network user account to use crypt passwords?
A. Crypt is the most secure password type provided by Mac OS X Server v10.4.
B. Mac OS X Server v10.4 allows only crypt passwords to be set for network user accounts.
C. Crypt passwords provide compatibility with computers running Mac OS X v10.1 and earlier.
D. The crypt password type enables the user account to authenticate via Kerberos.
Answer: C
NEW QUESTION: 3
Georgeは、iTechSolutionsで働くセキュリティの専門家です。彼は、組織の機密データを産業システム間で安全に転送する任務を負っていました。このプロセスでは、IEEE203.15.4標準に基づく短距離通信プロトコルを使用しました。このプロトコルは、10〜100mの範囲内の制限された領域で低レートでデータを転送する頻度が低いデバイスで使用されます。上記のシナリオでジョージが採用した短距離無線通信技術は何ですか?
A. Zigbee
B. NB-IOT
C. LPWAN
D. MQTT
Answer: C
Explanation:
Low-power WAN (LPWAN) could be a wireless wide space network technology that interconnects low-bandwidth, powered devices with low bit rates over long ranges.
Created for machine-to-machine (M2M) and net of things (IoT) networks, LPWANs operate at a lower value with bigger power potency than ancient mobile networks. they're additionally ready to support a greater range of connected devices over a bigger space.
LPWANs will accommodate packet sizes from ten to 1,000 bytes at transmission speeds up to two hundred Kbps. LPWAN's long vary varies from a pair of kilometre to one,000 km, counting on the technology.
Most LPWANs have a star wherever, like Wi-Fi, every end point connects on to common central access points.
Types of LPWANs
LPWAN isn't one technology, however a bunch of assorted low-power, wide space network technologies that take several shapes and forms. LPWANs will use licenced or unauthorised frequencies and embody proprietary or open normal choices.
The proprietary, unauthorised Sigfox is one among the foremost wide deployed LPWANs these days. Running over a public network within the 868 MHz or 902 MHz bands, the ultra-narrowband technology solely permits one operator per country. whereas it will deliver messages over distances of 30-50 kilometre in rural areas, 3-10 kilometre in urban settings and up to one,000 kilometre in line-of-site applications, its packet size is restricted to a hundred and fifty messages of twelve bytes per day. Downlink packets area unit smaller, restricted to four messages of eight bytes per day. causation information back to endpoints may also be vulnerable to interference.
Random part multiple access, or RPMA, could be a proprietary LPWAN from Ingenu INC. tho' it's a shorter vary (up to fifty kilometre line of sight and with 5-10 kilometre nonline of sight), it offers higher duplex communication than Sigfox. However, as a result of it runs within the a pair of.4 gigahertz spectrum, it's vulnerable to interference from Wi-Fi, Bluetooth and physical structures. It additionally usually has higher power consumption than different LPWAN choices.
The unauthorised LoRa, nominative and backed by the LoRa Alliance, transmits in many sub-gigahertz frequencies, creating it less vulnerable to interference. A spinoff of chirp unfold spectrum (CSS) modulation, LoRa permits users to outline packet size. whereas open supply, the underlying transceiver chip accustomed implement LoRa is barely offered from Semtech Corporation, the corporate behind the technology. LoRaWAN is that the media access management (MAC) layer protocol that manages communication between LPWAN devices and gateways.
Weightless SIG has developed 3 LPWAN standards: The unifacial weightless-N, duplex Weightless-P and Weightless-W, that is additionally duplex and runs off of unused TV spectrum. Weightless-N and Weightless-P area unit usually a lot of in style choices because of Weightless-W's shorter battery life. Weightless-N and Weightless-P run within the sub-1 gigahertz unauthorised spectrum however additionally support licenced spectrum operation mistreatment twelve.5 kilohertz narrowband technology.
Narrowband-IoT (NB-IoT) and LTE-M area unit each third Generation Partnership Project (3GPP) standards that treat the licenced spectrum. whereas they need similar performance to different standards, they treat existing cellular infrastructure, permitting service suppliers to quickly add cellular IoT property to their service portfolios.
NB-IoT, additionally referred to as CAT-NB1, operates on existing LTE and international System for Mobile (GSM) infrastructure. It offers transmission and downlink rates of around two hundred Kbps, mistreatment solely two hundred kilohertz of accessible information measure.
LTE-M, additionally referred to as CAT-M1, offers higher information measure than NB-IoT, and therefore the highest information measure of any LPWAN technology.
Some vendors, as well as Orange and SK medium, area unit deploying each licenced and unauthorised technologies to capture each markets.
Other LPWAN technologies include:
GreenOFDM from GreenWaves Technologies
DASH7 from hayrick Technologies INC.
Symphony Link from Link Labs INC.
ThingPark Wireless from Actility
Ultra slim Band from numerous corporations as well as Telensa, Nwave and Sigfox WAVIoT