What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic?()
Your Customer has 21 users, each requiring both PC and IP Phone connectivity. Which is the correct configuration for this customer?()
Just as the value of a telephone network increases with each new phone _____ to the system, so does the value of a computer system increase with each program that turns out.
A review of cell phone studies commissioned by the Swedish Radiation Protection Authority has found no “consistent evidence” of an increased risk of cancer from usage, the agency said.
Studies have differed on whether the use of mobile phones increases the risk of cancer as the handsets have become increasingly popular and efficient.
The governmental agency asked Dr. John D. Boice Jr. and Dr. Joseph K. McLaughlin of the International Epidemiology Institute in Rockville, Md., to evaluate published epidemiological research on the subject.
The review looked at nine studies since 1996 that included factors such as type of phone, duration and frequency of use and brain tumor location.
“No consistent evidence was observed for increased risk of brain cancer (or other forms),” the scientists said in the review, released Wednesday.
The agency acknowledged public concern about the issue and said many studies were still being performed and continued follow-up was needed on any possible carcinogenic effect linked to mobile phone usage.
An administrator finds a phone line but does not know where the line goes or if it is active. Whichof the following can be used to test if it is active?()
Windows phone内置的Office Mobile包括()
You are listening to a radio phone-in programme. Why has the woman called?
An IP phone connects a user to a switch as shown below: Based on the diagram shown above, which statement is true about the voice traffic coming to theswitch access port that is connected to the IP phone?()
Selecting a mobile phone for personal use is no easy task because technology()so rapidly.
Which of the following security threats involves making phone calls?()