Match the following port numbers with their uses: \(\begin{array}{} &…
2015
Match the following port numbers with their uses:
\(\begin{array}{} & \textbf{List – I} & & \textbf{List – II} \\ \text{(a)} & 23 & (i) & \text{World wide web} \\ \text{(b)} & 25 & (ii) & \text{Remote login} \\ \text{(c)} & 80 & (iii) & \text{USENET news} \\ \text{(d)} & 119 & (iv) & \text{E-mail} \\ \end{array}\)
Codes :
Answer: D. \((a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)\) — Standard port-to-service mapping: 23 → Remote login (Telnet) 25 → E-mail (SMTP) 80 → World Wide Web (HTTP) 119 → USENET news (NNTP) Therefore, the correct…
- A.
\((a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)\) - B.
\((a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)\) - C.
\((a) - (ii), (b) - (iv), (c) - (iii), (d) - (i)\) - D.
\((a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)\)
Attempted by 70 students.
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Correct answer: D
Standard port-to-service mapping:
23 → Remote login (Telnet)
25 → E-mail (SMTP)
80 → World Wide Web (HTTP)
119 → USENET news (NNTP)
Therefore, the correct associations for the items in the question are: 23 is for remote login, 25 is for e-mail, 80 is for the World Wide Web, and 119 is for USENET news.