更多"______in the strength of the carrie"的相关试题:
[单项选择] (71) In the strength of the carrier signal is varied to represent binary 1 or 0.
(72) is a system that can map a name to an address and conversely an address to an name.
(73) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol
(74) is an approach that enables an ATM Switch to behave like a LAN switch.
(75) is an guided media which is made of glass or plastic and transmits signals in the form of light.
A. ASK
B. PSK
C. FSK
D. FDM
[单项选择]______in the strength of the carrier signal is varied to represent binary 1 or 0.( )is a system that can map a name to an address and conversely an address to an name.______is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol______is an approach that enables an ATM Switch to behave like a LAN switch.______is an guided media which is made of glass or plastic and transmits signals in the form of light.
A. NAT
B. NCP
C. DDN
D. DNS
[单项选择] (71) in the strength ofthe carrier signal is varied to represent binary 1 or 0.
(72) is a system that can map a name to all address and conversely an address to an name.
(73) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol
(74) is an approach that enables an ATM Switch to behave like a LAN switch.
(75) is an guided media which is made of glass or plastic and transmits signaIs in the form of light.
A. ASK
B. PSK
C. FSK
D. FDM
[单项选择]( )in the strength of the carrier signal is varied to represent binary 1 or 0.______is a system that can map a name to an address and conversely an address to an name.______is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol______is an approach that enables an ATM Switch to behave like a LAN switch.______is an guided media which is made of glass or plastic and transmits signals in the form of light.
A. ASK
B. PSK
C. FSK
D. FDM
[单项选择]In (66) the strength of the carrier signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to al name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.
A. ASK
B. PSK
C. FSK
D. FDM