True/False Questions Flashcards
Attenuation is the weakening of a signal over a distance
T
In Connection-oriented service, it required to set up a connection (path) first and then transfer data.
T
ADSL technology provides lower data rates than VDSL technology.
T
ATM is a connection-less protocol.
F
Partial-Mesh is the usually the best option to connect cities in a country.
T
LEO satellites have more propagation delays than MEO satellites.
F
Stop-and-Wait ARQ is a half-duplex technique.
T
In Circuit switching, each packet is treated independently of all others.
F
Wireless uses a contention-based media access control technique called Carrier Sense Multiple Access with Collision Detection (CSMA/CD).
F
Parity checking can detect single bit errors but cannot correct any errors.
T
Geo satellites require less power than LEO and MEO satellites.
F
Wireless Local Area Networks require an Access Point.
T
ADSL provides different data rate to and from the service provider.
T
CRC16 is a better error detecting method than CRC32.
F
Hubs operate in the Data link layer in the OSI reference model.
F
Hubs operate on Layer 1 the Physical Layer.
Broadband (ADSL) is an example of Packet switching.
T
IEEE802.3 is also known as Token Ring Protocol.
F
IEEE802.5 is the Token Ring Protocol.
IEEE802.3 is for Ethernet.
Frequency Division Multiplexing is better than Time Division Multiplexing.
F
Wireless networks use CSMA/CD as the media access method.
F
LRC is a better error detecting method than CRC.
F
Signal to noise ratio is a measure of the quality of communication link.
T
Routers operate in the transport layer in the OSI reference model.
F
Routers operate on Level 3 - Network Layer of the OSI model.
ATM is a connection-oriented protocol.
T
IEEE802.11x defines wireless network standards.
T
