What is the key mechanism used to combine or separate wavelengths of light in a WDM system?
What will be an ideal response?
Prisms form the basis of optical multiplexing and demultiplexing. A multiplexor accepts
beams of light of various wavelengths and uses a prism to combine them into a single beam; a
demultiplexor uses a prism to separate the wavelengths.
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A technician is having problems sending a notification from a server. The technician suspects the firewall may be blocking traffic. Which of the following clients can be used to confirm the technician's suspicions?
A. traceroute B. sendmail C. nslookup D. telnet
Given the following code, what namespace does display3 belong to?
{ void print(); void display1(){}; } namespace ns2 { void print(); void display2(){}; } void display3(); int main() { using namespace ns1; using namespace ns2; display1(); display2(); return 0; } void display3() { }