Computer Networks

261. Examples of data link layers are

1. HDLC
2. Ethernet
3. Both a & b
4. None of these

View answer

262. Extended Binary Coded Decimal Interchange Code is developed by

1. Parallel to ASCII, IBM in 1964
2. Parallel to ASCII, IBM in 1974
3. Parallel to ASCII, IBM in 1962
4. Parallel to ASCII, IBM in 1964

View answer

263. External noise has ____________ effect on higher frequencies

1. More
2. Less
3. No
4. None of these

View answer

264. External noise is generally picked up from electrical appliances existing

1. In the vicinity
2. From the atmosphere
3. From electrical transformers
4. Also from outer space
5. All of these

View answer

265. FCS (frame check sequence) is a ____________ sequence for error control

1. 4bit
2. 16bit
3. 32bit
4. 64bit

View answer

266. FCS stands for

1. Frame Check System
2. Frame Check Sequence
3. Frame Cyclic Sequence
4. Frame Checksum Sequence

View answer

267. FDDI network comprises 2 bottom layer in ISOs OSI model namely

1. Physical layer
2. Data link layer
3. Both a & b
4. None of these

View answer

268. FDDI uses ANSI X3T9.5 for obtaining 100Mbps from a signal of ____________

1. 32.25MHz
2. 31.25MHz
3. 31.24MHz
4. 32.26MHz

View answer

269. FDM is used to ____________ the available frequency band in GSM

1. Addition
2. Divide
3. Both a & b
4. None of these

View answer

270. FEC means

1. Formal Error Checking
2. Forward Error Checking
3. Forward Error Character
4. Formal Error Character

View answer