Physical Layer Provides access for *the end user True O False O the network layer provides two related services Addressing and *routing True O False O The number of users on a network has the greatest impact on the *network's reliability True O False O The physical layer is responsible for moving frames from one hop (node) to the next True O False O The main disadvantage of NRZ encoding is that it requires two signal * changes to encode one bit True O False O Transmission media lie below the transport laver True O False O Microwaves are used for celular phone satelite, and wireless LAN communications True O False O The minimum bandwidth of Manchester and diferential *Manchester is twice that of NRZ True O False O The digital signal can have only two anar. True O False O Information must be encoded into signals before it can be transported *across communication media True O False

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Physical Layer Provides access for
*.the end user
True O
False O
the network layer provides two
related services: Addressing and
*routing
True O
False O
The number of users on a network
has the greatest impact on the
*network's reliability
True O
False O
The physical layer is responsible for
moving frames from one hop (node)
*to the next
True O
False O
The main disadvantage of NRZ
encoding is that it requires two signal
*changes to encode one bit
True O
False O
Transmission media lie below the
*transport layer
True O
False O
Microwaves are used for cellular
phone, satellite, and wireless LAN
communications
True O
False O
The minimum bandwidth of
Manchester and differential
*Manchester is twice that of NRZ
True O
False O
The digital signal can have only two
*Jevels
True O
False O
Information must be encoded into
signals before it can be transported
*.across communication media
True O
False O
Transcribed Image Text:Physical Layer Provides access for *.the end user True O False O the network layer provides two related services: Addressing and *routing True O False O The number of users on a network has the greatest impact on the *network's reliability True O False O The physical layer is responsible for moving frames from one hop (node) *to the next True O False O The main disadvantage of NRZ encoding is that it requires two signal *changes to encode one bit True O False O Transmission media lie below the *transport layer True O False O Microwaves are used for cellular phone, satellite, and wireless LAN communications True O False O The minimum bandwidth of Manchester and differential *Manchester is twice that of NRZ True O False O The digital signal can have only two *Jevels True O False O Information must be encoded into signals before it can be transported *.across communication media True O False O
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