When analog signals are digitized using the G.711 codec, voice samples are encapsulated into protocol data units (PDUs) involving which three headers? ()
第1题:
第2题:
Which of the following describes the roles of devices in a WAN?()
第3题:
When a router converts analog signals to digital signals, what three steps are always included in the process?()
第4题:
What is the difference between a CSU/DSU and a modem?()
第5题:
What best describes an FXO interface?()
第6题:
What are two steps that are taken when a router converts a voice signal from analog to digital form?()
第7题:
Which of the following features should a technician consider when purchasing a KVM switch for adatacenter?()
第8题:
An optical cable is used to transmit:()
第9题:
IP
TCP
RTP
UDP
H323
CRTP
第10题:
The three required steps in the analog to digital conversion are sampling,encoding,and compression.
The three required steps in the analog to digital conversion are sampling,quantization,and compression.
The three required steps in the analog to digital conversion are sampling,quantization,and encoding.
The output of the sampling process is a pulse code modulation (PCM) signal.
The output of the sampling process is a pulse amplitude modulation (PAM) signal.
第11题:
A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line
第12题:
A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.
A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.
A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.
A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.
第13题:
Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks?()
第14题:
在音响调音专业中,ANALOG表示()。
第15题:
Which of the following describes the roles of devices in a WAN? ()
第16题:
Which statement is true about the digital to analog conversion process?()
第17题:
What is the difference between a CSU/DSU and a modem?()
第18题:
Which of the following interfaces is used to connect analog devices to the Internet?()
第19题:
When comparing analog display inputs to digital display inputs, which of the following is anadvantage that digital has over analog?()
第20题:
What is the minimum connection required for Call Home on an IBM System Storage DS8000?()
第21题:
the two steps of digital to analog conversion are decompression and reconstruction of the analog signal
the two steps of digital to analog conversion are decoding and filtering
the two steps of digital to analog conversion are decompression and filtering of the analog signal
the two steps of digital to analog conversion are quantization and decoding
第22题:
sampling
packetization
quantization
serialization
第23题:
A CSU/DSU terminates a digital local loop
A modem terminates a digital local loop
A CSU/DSU terminates an analog local loop
A modem terminates an analog local loop
A router is commonly consideredaDTEdevice
A router is commonly considereda DCE device