UGC NET Questions (Paper – 1)

Statements A, B and C correctly describe typical campus network infrastructure, whereas statement D is false. LANs connect devices within limited areas, often using both wired and wireless links; WANs span larger distances between locations; and switches interconnect devices inside a LAN. Saying that LANs use only wireless technology ignores widespread use of Ethernet cables. Hence the correct combination is A, B and C only.

Option A:
Option A is incorrect because it lists only A and B as correct and omits C. While LAN and WAN descriptions are accurate, switches are also fundamental to LAN design, so excluding C makes the answer incomplete.

Option B:
Option B is incorrect because it includes A, B and D as correct statements and thus accepts D. Since LANs in practice can be wired, wireless or mixed, D does not hold and cannot be part of the correct set.

Option C:
Option C is incorrect because it groups B and C only and leaves out A. A provides the basic definition of a LAN and must be included to present a full picture of campus networking.

Option D:
Option D is correct because it brings together A, B and C, which together portray how campus networks are structured, while rejecting D, which misrepresents available technologies.