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D413 - Telecomm and Wireless Communications, Exams of Computer Science

Howard Community CollegeComputer Science

D413 - Telecomm and Wireless Communications

Typology: Exams

2025/2026

Available from 03/16/2026

KattyJennifer-1
KattyJennifer-1 🇺🇸

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D413 - Telecomm and Wireless Communications
1.
802.3
Ethernet
standards
2.
802.11
Wi-Fi
Standards
3.
802.1X
Port-based
Network
Access
Control
(PNAC)
standard.
4.
802.1D
Spanning
Tree
Protocol
(STP)
Standard
5.
802.1Q
Protocol
for
VLAN
tagging
within
networks.
6.
802.1p
Quality
of
Service
(QoS)
standard.
7.
802.3af / 802.3at
Standards
for
Power
over
Ethernet
(PoE
/
PoE+).
8.
802.3ad
Link Aggregation (LAG) standard
9.
802.15
Wireless
Personal
Area
Networks
(WPAN)
standard
10.
802.16
WiMAX
(Worldwide
Interoperability
for
Microwave
Access)
standard
11.
Cat 5
100
Mbps
100 meters
100
MHz
12.
Cat 5e
1
Gbps
100 meters
100
MHz
13.
Cat 6
1
Gbps
100 meters
250
MHz
14.
Cat 6a
10
Gbps
100 meters
500
MHz
pf3
pf4
pf5

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D413 - Telecomm and Wireless Communications

  1. 802.3 Ethernet standards
  2. 802.11 Wi-Fi Standards
  3. 802.1X Port-based Network Access Control (PNAC) standard.
  4. 802.1D Spanning Tree Protocol (STP) Standard
  5. 802.1Q Protocol for VLAN tagging within networks.
  6. 802.1p Quality of Service (QoS) standard.
  7. 802.3af / 802.3at Standards for Power over Ethernet (PoE / PoE+).
  8. 802.3ad Link Aggregation (LAG) standard
  9. 802.15 Wireless Personal Area Networks (WPAN) standard
  10. 802.16 WiMAX (Worldwide Interoperability for Microwave Access) standard
  11. Cat 5 100 Mbps 100 meters 100 MHz
  12. Cat 5e 1 Gbps 100 meters 100 MHz
  13. Cat 6 1 Gbps 100 meters 250 MHz
  14. Cat 6a 10 Gbps 100 meters 500 MHz

D413 - Telecomm and Wireless Communications

  1. Cat 7 10 Gbps 100 meters 600 MHz
  2. Cat 7a 10 Gbps 100 meters 1000 MHz
  3. Cat 8 40 Gbps 30 meters 2000 MHz
  4. FDM (Frequency Division Multiplexing)
  5. TDM (Time Division Multi- plexing) Analog multiplexing technique dividing bandwidth into frequency bands. Digital multiplexing technique allocating time slots for each channel.
  6. STDM (Synchronous TDM) TDM with fixed time slots synchronized to a clock.
  7. ATDM (Asynchronous TDM) TDM with flexible time slots for varying data rates.
  8. WDM (Wavelength Division Optical multiplexing using ditterent light wavelengths for channels. Multiplexing)
  9. DWDM (Dense WDM) Enhanced WDM that packs channels more closely for higher capac- ity.
  10. CDM (Code Division Multi- plexing) Digital multiplexing technique that spreads signals using unique codes.
  11. ISO/IEC 7498 - 1 OSI Model standard
  12. ISO/IEC 11801 Standard for generic cabling for premises

8 DL/UL MU-MIMO

20, 40, 80+80, 160 MHz

  1. Satellite Modem Provides internet access in remote areas without landline or cable infrastructure. High latency, weather susceptibility, limited band- width, expensive service.
  2. CSU/DSU Facilitates high-speed WAN connectivity for LANs. Requires addi- tional equipment, typically used for leased lines, limited flexibility.
  3. Cable Modem Otters high-speed internet access over existing cable TV lines. Shared bandwidth, speed degradation during peak times, occa- sional service outages.
  4. DSL Modem Provides high-speed internet access over traditional phone lines. Speed and reliability depend on distance from provider, signal qual- ity may degrade over copper.
  5. 56k Modem Otters basic internet access via dial-up phone lines. Slow speeds, ties up phone line during use, obsolete technology.
  6. ISDN Modem Provides digital voice and data transmission over phone lines. Lim- ited availability, higher costs compared to DSL, speed limitations.
  7. WiMAX Modem Provides wireless broadband over long distances. Limited coverage area, signal interference, susceptibility to weather conditions.
  8. Cellular Modem Otters wireless internet access using cellular networks and data plans. Limited coverage in rural areas, data caps and throttling, potential for network congestion.
  9. 100Base-FX MM Laser 400 meters (half duplex) 2k (full duplex)
  1. 100Base-SX MM LED 300 meter
  2. 1000BASE-SX MM Laser 550 meters Short wavelength
  3. 1000BASE-LX MM/SM Laser 550m/5k Long Wavelength
  4. 10GBase-SR MM (Short range) 26 - 400meters
  5. 10GBase-LR SM (Long Range) 10 kilometers
  6. 802.19 Standard for coexistence of multiple wireless networks
  7. 802.8 Fiber optic standard for broadband networks
  8. 802.2 Logical link control standard for data communication
  9. 802.4 Standard for industrial automation networks
  10. 802.11 Wireless LAN standard for local networks
  11. ISO 1801 Standard for energy-eflcient communication networks
  12. ISE 2017 International Symposium on Electronics
  13. ISE 2018 Conference on Information Systems Engineering
  14. CRC vs Parity Bit Error detection methods in data transmission