Ofdm - Study guides, Class notes & Summaries

Progression: Maintenance Tech I - II Conventional: Exam In the tree-and-branch architecture, how is the downstream signal from the trunk fed to the distribution branches? What is a common solution when congestion from modem activity and traffic becomes unacceptable in a hybrid fiber/coax (HFC) network? What technologies are defined in DOCSIS 4.0 to help sustain the hybrid fiber/coax (HFC) network infrastructure for several more years? How can a less-experienced technician identi...

CWNP Prep Test 1 Questions & Answers 100% CORRECT 2024/2025 802.11a & 802.11g - ANSWERSWi-Fi equipment complying with _______ is not compatible with equipment complying with _______. *PoE switches allow administrators to power cycle an AP from a remote location *PoE switches eliminate the need for AC power at each AP location - ANSWERSAs a sales person for ABC company, which sells APs and PoE switches, you are encouraged to recommend infrastructure upgrades to customers who wish to purc...

DCOM 251 8-14 Practice Exam Questions With 100% Correct Answers 2024. Which of the following is not a WLAN security standard? - correct answer WAP WLAN security based on a PSK technology is called ________ mode. - correct answer personal The strength of the electromagnetic waves being radiated from an antenna is referred to as gain, which involves a measurement of both direction and efficiency of a transmission. Gain is commonly measured using the dBi unit of measure. - correct answer tr...

NCTI ROC II BOOK II FINAL Test 1. When pressure testing a drop system to check for leakage, What must be done before applying the test signal? The technician must isolate the drop system from the hybrid fiber/coax (HFC) network by disconnecting the drop at the distribution tap. Why do some leakage detection systems utilize a leakage carrier modulated with a tagging signal? To avoid false detection of leaks. When all three sections of a pulse code modulator (PCM) are combined, what functio...

HSD Customer Service Test The first version of the Data Over Cable Service Interface Specification (DOCSIS) was approved as an international standard by what organization? - The International Telecommunication Union (ITU). What criteria does the Data Over Cable Service Interface Specification (DOCSIS) certification process ensure? - Compliance with the DOCSIS standard and interoperability between suppliers. What layers of the Open Systems Interconnection (OSI) reference model are ap...

dcom 251 8-14 final exam Which of the following is not a WLAN security standard? - correct answer WAP WLAN security based on a PSK technology is called ________ mode. - correct answer personal The strength of the electromagnetic waves being radiated from an antenna is referred to as gain, which involves a measurement of both direction and efficiency of a transmission. Gain is commonly measured using the dBi unit of measure. - correct answer true WPA2 uses Counter Mode with Cipher Block...

dcom 251 8-14 final exam Question and answers 100% correct 2024 Which of the following is not a WLAN security standard? - correct answer WAP WLAN security based on a PSK technology is called ________ mode. - correct answer personal The strength of the electromagnetic waves being radiated from an antenna is referred to as gain, which involves a measurement of both direction and efficiency of a transmission. Gain is commonly measured using the dBi unit of measure. - correct answer true ...

CWNA Exam Questions & Answers 2023/2024 DSSS uses only DBPSK for modulation. - ANSWER-False (DSSS uses DBPSK at 1 Mbps but uses DQPSK at 2 Mbps) Because of the relatively high speeds achieved with FHSS, it is widely implemented in WLAN systems. - ANSWER-False How many adjacent non-overlapping channels may be used in the same physical area using the 2.4 GHz spectrum? - ANSWER-3 Which type of RF signal uses only a single frequency for transmission? - ANSWER-narrowband How wide ...

OMIS 660 FINAL EXAM ALL POSSIBLE QUESTIONS AND ANSWERS 2024 ALREADY GRADED A+ Wireless network standards operate at ______? Ans- The data link layer Wireless network standards are ________ standards. Ans- OSI Wi-Fi Standards come from the ________ Working Group. Ans- 802.11 We use the terms Wi-Fi and ________ interchangeably in this book. Ans- 802.11 Wireless access points typically link wireless clients to ________. Ans- Servers on the wired network. Compared to wire...

WGU 178 Focused on Physical Security Measures, Monitoring Networks & Protecting Wireless Networks Exam Questions and Answers 2024/2025 OFDM - correct answer - orthogonal frequency division multiplexing - breaks data into sub signals and transmits them simultaneously across different frequencies or sub bands WEP - correct answer - wired equivalent privacy - a wireless security protocol that has weaknesses that allow it to be cracked fairly quickly What makes WEP so terrible - corre...