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1. DEVRY ECET 375 Week 1 Homework NEW
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Chapter 1-Questions
1-3: Discuss the relationship between network
architecture and protocol
1-5: Define the following terms: protocol,
connection-orientated protocols, connectionless
protocols, and protocol stacks.
1-11: Briefly describe the seven layers of the OSI
protocol hierarchy
1-21: List and briefly describe the five basic data
communications network topologies
1-23: Briefly describe the TCP/IP protocol model

2. Chapter 3-Questions
3-1: In which layer of the OSI protocol hierarchy is
the transmission medium found?
3-2: What are the two general categories of
transmission media?
3-3: Define transmission line.
3-4: Describe a transverse electromagnetic wave.
Chapter 3-Problems
3-1: Determine the wavelengths for the
electromagnetic waves in free space with the
following frequencies: 1 kHz, 100 kHz, 1 MHz, and
1 GHz
3-2: Determine the wavelengths for the
electromagnetic waves in free space with the
following frequencies: 1 cm, 1 m, 10 m, and 1000
m.
3-3: Determine the characteristic for a two-wire
parallel transmission line with an air dielectric
and D/r ratio of 8.8.

3. 3-5: Determine the characteristic impedance for a
coaxial cable with inductance L = 0.2
microHenrys/foot and capacitance C=16
picoFarads/foot.
Chapter 4 Problems
4-1: Determine the wavelengths in nanometers,
angstroms, and micrometers for the following
frequencies: 3.45 * 1014 Hz, 3.62 * 1014 Hz, 3.21 *
1014 Hz
4-2: Determine the light frequency for the
following wavelengths: 670 nm, 7800 angstroms,
and 710 nm.