1. In
switched 802.3 LANS, each card forms its own ................... independents
of the others.
(A) Domain (B) Area
(C) Collision Area (D) Collision domain
Answer: D
2. 802.3
base band systems use ........................ encoding.
(A) Manchester (B) RZ
(C) NRZ (D)
RZ or NRZ
Answer: A
3. In
802.3, each frame starts with a ................... of 7 bytes.
(A) SD (B) Preamble
(C) ED (D) pad
Answer: B
4. In
802.3, the high order bit of the destination address is a ‘0’ for
................. addresses.
(A) Ordinary (B) Group
(C) Broadcast (D) Unicast
Answer: A
5. In
802.3, the address consisting of all 1 bits is reserved for .................
(A) Unicast (B) Multicast
(C) Broadcast (D) Ordinary
Answer: C
6. The
.................... standard describes the upper part of the data link layer.
(A) IEEE 802.2 (B) IEEE 802.3
(C) IEEE 802.4 (D) IEEE 802.5
Answer: A
7. ....................
protocol is widely used on LAN in the MAC sub layer.
(A) CSMA (B) TCP
(C) CSMA/CD (D) GSM
Answer: C
8. In
binary countdown protocol each station address bits are ..................
(A) ANDed (B)
Ex - ORed
(C) ORed (D)
NORed
Answer: C
9. Multiple
users share a common channel is called .......................
(A) LAN (B) WAN
(C) Contention (D) CSMA/CD
Answer: C
10. ...................
system is used for ground based radio broadcasting.
(A) Static channel allocation
(B) Dynamic channel allocation
(C) ALOHA
(D) CSMA
Answer: C
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