MCQOPTIONS
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MCQOPTIONS
This section includes 198 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Networks knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The original Ethernet has gone through |
| A. | only one generation |
| B. | two generations |
| C. | three generation |
| D. | four generations |
| Answer» E. | |
| 152. |
100BaseFX is used for the encoding of |
| A. | Manchester |
| B. | NRZ - I |
| C. | MLT-3 |
| D. | 8B/6T |
| Answer» C. MLT-3 | |
| 153. |
Preamble contains |
| A. | 6 Bytes |
| B. | 4 Bytes |
| C. | 2 Bytes |
| D. | 7 Bytes |
| Answer» E. | |
| 154. |
10 Gigabit Ethernet operates only in |
| A. | Duplex Mode |
| B. | Half Duplex Mode |
| C. | Quadratic Duplex Mode |
| D. | Full Duplex Mode |
| Answer» E. | |
| 155. |
1000Base-LX has used two wires for long wave are |
| A. | STP Cable |
| B. | UTP Cable |
| C. | Fiber Optic |
| D. | Coaxial Cable |
| Answer» D. Coaxial Cable | |
| 156. |
Wireless LANs implement security measures in the |
| A. | Session Layers |
| B. | Data Link Layers |
| C. | Sub Layers |
| D. | Application Layers |
| Answer» C. Sub Layers | |
| 157. |
Round trip time and time required to send the jam sequence is called the |
| A. | frame slots |
| B. | Propagation time |
| C. | Maximum length |
| D. | slot time |
| Answer» E. | |
| 158. |
In IEEE Project 802, the Logic Link Control (LLC) is used to control and handle the |
| A. | errors |
| B. | flow |
| C. | frames |
| D. | all of the above |
| Answer» E. | |
| 159. |
By using bridge, the collision is |
| A. | Reduced |
| B. | Increased |
| C. | Eliminated |
| D. | diversified |
| Answer» B. Increased | |
| 160. |
The purpose of the _______ is to provide flow and error control for the upper-layer protocols that actually demand these services. |
| A. | MAC |
| B. | LLC |
| C. | LLU |
| D. | none of the above |
| Answer» C. LLU | |
| 161. |
The connecting device that is used to connect the wires coming from different branches is known as |
| A. | bridges |
| B. | active hubs |
| C. | repeaters |
| D. | passive hubs |
| Answer» E. | |
| 162. |
The problem of a station not being able to detect a potential competitor for the medium because it thinks that there is activity between them is called ..................... |
| A. | Exposed Station Problem |
| B. | Collision Avoidance Problem |
| C. | Hidden Station Problem |
| D. | Access Grant Problem |
| Answer» B. Collision Avoidance Problem | |
| 163. |
In Ethernet frame, both destination and sender addresses are of length |
| A. | 1 Byte |
| B. | 2 Bytes |
| C. | 4 Bytes |
| D. | 6 Bytes |
| Answer» E. | |
| 164. |
Each station on an Ethernet network has a unique _______ address imprinted on its network interface card (NIC). |
| A. | 5-byte |
| B. | 32-bit |
| C. | 48-bit |
| D. | 16-bit |
| Answer» D. 16-bit | |
| 165. |
__________ uses thin coaxial cable. |
| A. | 10Base5 |
| B. | 10Base2 |
| C. | 10Base-T |
| D. | 10Base-F |
| Answer» C. 10Base-T | |
| 166. |
A destination address can be |
| A. | Unicast |
| B. | multicast |
| C. | broadcast |
| D. | all of the above |
| Answer» E. | |
| 167. |
Protocol Data Unit (PDU) is similar to |
| A. | LLC |
| B. | HDLC |
| C. | MAC |
| D. | DSAP |
| Answer» C. MAC | |
| 168. |
The maximum length of 10GBase-L in Gigabit ethernet implementation is |
| A. | 100 m |
| B. | 300 m |
| C. | 10 km |
| D. | 40 km |
| Answer» D. 40 km | |
| 169. |
A point-to-point link in a remote backbone connected by remote bridges acts as |
| A. | Ad hoc network |
| B. | LA Network |
| C. | WA Network |
| D. | MA Network |
| Answer» C. WA Network | |
| 170. |
A repeater is a device that cannot connect LANs of |
| A. | Different protocols |
| B. | Same Protocols |
| C. | Protocols of Data link layer |
| D. | protocols of presentation layer |
| Answer» B. Same Protocols | |
| 171. |
100BaseTX uses two pairs of |
| A. | oftwisted cable |
| B. | fiber optic |
| C. | coaxial cable |
| D. | None of the above |
| Answer» B. fiber optic | |
| 172. |
The flag of the Start frame delimiter (SFD) is |
| A. | 111000011 |
| B. | 10101011 |
| C. | 10010011 |
| D. | 11011011 |
| Answer» C. 10010011 | |
| 173. |
The maximum length of 100BaseTX is |
| A. | 100 meter |
| B. | 200 meter |
| C. | 300 meter |
| D. | 400 meter |
| Answer» B. 200 meter | |
| 174. |
In half duplex mode of MAC sublayer the stations are connected via |
| A. | Switch |
| B. | Hub |
| C. | Bridge |
| D. | Bus |
| Answer» C. Bridge | |
| 175. |
In 100BaseT4 the total number of wires are |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 176. |
Bridges are also repeaters and |
| A. | Regenerator |
| B. | Preprocessor |
| C. | Amplifier |
| D. | All of the above |
| Answer» B. Preprocessor | |
| 177. |
The maximum frame length for 10-Mbps Ethernet is ________ bytes. |
| A. | 1518 |
| B. | 1500 |
| C. | 1200 |
| D. | 1236 |
| Answer» B. 1500 | |
| 178. |
Gigabit Ethernet access methods include _______ mode. |
| A. | half-duplex |
| B. | full-duplex |
| C. | both (a) and (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 179. |
If an Ethernet destination address is 07:01:02:03:04:05, then this is a ______ address. |
| A. | unicast |
| B. | multicast |
| C. | broadcast |
| D. | any of the above |
| Answer» C. broadcast | |
| 180. |
The bridge must discard any frames too large for its |
| A. | Medium |
| B. | Connection |
| C. | frame format |
| D. | System |
| Answer» E. | |
| 181. |
Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology |
| A. | 8 Kbps |
| B. | 16 Kbps |
| C. | 32 Kbps |
| D. | 64 Kbps |
| Answer» E. | |
| 182. |
A hub is used in ......................... Ethernet. |
| A. | 10Base 5 |
| B. | 10Base 2 |
| C. | 10Base – T |
| D. | 10Base - F |
| Answer» D. 10Base - F | |
| 183. |
1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and ________ line coding. |
| A. | 4B/5B; NRZ |
| B. | 8B/10B; NRZ |
| C. | 4B/5B; MLT-3 |
| D. | 8B/10B; NRZ |
| Answer» C. 4B/5B; MLT-3 | |
| 184. |
________ uses fiber-optic cable. |
| A. | 10Base5 |
| B. | 10Base2 |
| C. | 10Base-T |
| D. | 10Base-F |
| Answer» E. | |
| 185. |
In most transmission media, the signal propagates at |
| A. | 2 X 10^2 |
| B. | 2 X 10 ^4 |
| C. | 2 X 10^6 |
| D. | 2 X 10^8 |
| Answer» E. | |
| 186. |
The half duplex mode of gigabit Ethernet approach uses |
| A. | CSMA/CD |
| B. | CSMA/CA |
| C. | FDMA |
| D. | TDMA |
| Answer» B. CSMA/CA | |
| 187. |
What is the hexadecimal equivalent of the Ethernet address 01011010 00010001 01010101 00011000 10101010 00001111? |
| A. | 5A:88:AA:18:55:F0 |
| B. | 5A:81:BA:81:AA:0F |
| C. | 5A:18:5A:18:55:0F |
| D. | 5A:11:55:18:AA:0F |
| Answer» E. | |
| 188. |
This is a device that can be used to connect one Ethernet network to another nearby Ethernet network. |
| A. | gateway |
| B. | switch |
| C. | bridge |
| D. | forwarder |
| Answer» D. forwarder | |
| 189. |
On an Ethernet network, this is the unit of data that is transmitted between network points. It has explicit minimum and maximum lengths and a set of required pieces of information that must appear within it. |
| A. | data-chunk |
| B. | frame |
| C. | data packet |
| D. | packet |
| Answer» C. data packet | |
| 190. |
How many bytes are in Ethernet address? |
| A. | 6 |
| B. | 5 |
| C. | 4 |
| D. | 3 |
| Answer» B. 5 | |
| 191. |
How many bits are there in the Ethernet address? |
| A. | 64 bits |
| B. | 48 bits |
| C. | 32 bits |
| D. | 16 bits |
| Answer» C. 32 bits | |
| 192. |
How different computers are connected to a LAN by a cable? |
| A. | Interface card |
| B. | Modem |
| C. | DSL |
| D. | DSLAM |
| Answer» B. Modem | |
| 193. |
_____ transmission technology (based on Ethernet) provides a data rate of 1 billion bits per second. |
| A. | 10BASE-T Ethernet |
| B. | Standard Ethernet |
| C. | Fast Ethernet |
| D. | Gigabit Ethernet |
| Answer» E. | |
| 194. |
Ethernet uses a ______ physical address that is imprinted on the network interface card (NIC). |
| A. | 32-bit |
| B. | 64-bit |
| C. | 6-byte |
| D. | none of the above |
| Answer» D. none of the above | |
| 195. |
A personal computer or workstation on an Ethernet network must have one of these cards. |
| A. | TDI |
| B. | NIC |
| C. | PCI |
| D. | None of the above |
| Answer» C. PCI | |
| 196. |
WHAT_IS_INTERFRAME_GAP??$ |
| A. | idle time between frames |
| B. | idle time between frame bits |
| C. | idle time between packets |
| D. | none of the mentioned |
| Answer» B. idle time between frame bits | |
| 197. |
An_ethernet_frame_that_is_less_than_the_IEEE_802.3_minimum_length_of_64_octets_is_called$ |
| A. | short frame |
| B. | run frame |
| C. | mini frame |
| D. | man frame |
| Answer» C. mini frame | |
| 198. |
The maximum size of payload field in ethernet frame i? |
| A. | 1000 bytes |
| B. | 1200 bytes |
| C. | 1300 bytes |
| D. | 1500 bytes |
| Answer» E. | |