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LAN is generally transmitted in the form of bus-based, the most commonly used protocol is carrier sense and collision detection CSMA/CD protocol.
LAN is generally transmitted in the form of bus-based, the most commonly used protocol is carrier sense and collision detection CSMA/CD protocol.A . TrueB . FalseView AnswerAnswer: A
In the access network access technology, which of the following access method can provide maximum access bandwidth?
In the access network access technology, which of the following access method can provide maximum access bandwidth?A . ADSLB . ADSL 2+C . VDSLD . GPONView AnswerAnswer: D
ATM cell VPI/VCI has only local importance, after each node in the process of transmission, the VPI/VCI value can be changed.
ATM cell VPI/VCI has only local importance, after each node in the process of transmission, the VPI/VCI value can be changed.A . TrueB . FalseView AnswerAnswer: A
Which of the following access technology rate is the fastest?
Which of the following access technology rate is the fastest?A . ADSLB . ADSL2+C . SHDSLD . VDSL2View AnswerAnswer: D
Ethernet technology is a widely used technology, according to the different transmission rate, there are three classes of 10M, 100M, 1000M, including 10M and 100M Ethernet transmission medium is commonly used for twisted pair, but due to high speed of 1000M Ethernet ,the transmission medium must use optical fiber.
Ethernet technology is a widely used technology, according to the different transmission rate, there are three classes of 10M, 100M, 1000M, including 10M and 100M Ethernet transmission medium is commonly used for twisted pair, but due to high speed of 1000M Ethernet ,the transmission medium must use optical fiber.A ....
VDSL2 on a pair of twisted pair provides vertically symmetrical/asymmetrical transmission rate, transmission distance of about 3km, the maximum descending rate of 52M (symmetric rates), the maximum upstream rate of 12M (asymmetric rate).
VDSL2 on a pair of twisted pair provides vertically symmetrical/asymmetrical transmission rate, transmission distance of about 3km, the maximum descending rate of 52M (symmetric rates), the maximum upstream rate of 12M (asymmetric rate).A . TrueB . FalseView AnswerAnswer: B
MAC address of computer network card is unified assigned to each manufacturer by IETF, globally unique.
MAC address of computer network card is unified assigned to each manufacturer by IETF, globally unique.A . TrueB . FalseView AnswerAnswer: B
Which layer of the OSI model does the router manly work in ?
Which layer of the OSI model does the router manly work in ?A . Physical LayerB . Link LayerC . Network layerD . Transport LayerView AnswerAnswer: C
What domain can a VLAN be seen as ?
What domain can a VLAN be seen as ?A . collision domainB . broadcast domainC . management domainD . physical areaView AnswerAnswer: B
Link layer defines the electrical, mechanical process and function, to realize line activation, keeping and demolition on both ends of system connection.
Link layer defines the electrical, mechanical process and function, to realize line activation, keeping and demolition on both ends of system connection.A . TrueB . FalseView AnswerAnswer: B
