Nodejs

net.createServer([options][, connectionListener]) ✘ net.connect(options[, connectionListener]) ✘ net.createConnection(port[, host][, connectListener]) ✘ None of the above. ✔

os ✘ fs ✘ net ✘ fl ✔

dns ✘ web ✘ net ✘ mac ✔

It resolves a hostname into the first found A (IPv4). ✘ If an option is not provided, then IP v4 and v6 addresses are both valid. If the option is an integer, then it must be 4 or 6. ✘ It resolves a hostname into the AAAA (IPv6). ✘ All of these ✔

web ✘ net ✘ domain ✘ error ✔

url ✘ net ✘ http ✘ web ✔

The error emitter is executing its code within the run method of a domain. ✘ The error emitter is added explicitly to a domain using its add method. ✘ The error emitter is executing its code within the compile method of a domain. ✘ None of these ✔

The error emitter is executing its code within the run method of a domain. ✘ The error emitter is added explicitly to a domain using its add method. ✘ The error emitter is compiling its code within the compile method of a domain. ✘ None of these ✔

http.request(options, callback) ✘ http.createRequest(options, callback) ✘ http.makeRequest(options, callback) ✘ None of these ✔

The exec() method runs a command in a shell and buffers the output. ✘ The exec() method returns a buffer with a max size. ✘ The exec() method waits for a process to end and tries to return all of the buffered data at once. ✘ All of these ✔