Multiple Choice Questions and Answers on industrial ethernet

1. Magnitude of signal in Ethernet __________

a) Voltages swing between 0 and -2.05 volts on coaxial cables or between -2.5 V to +2.5 V on twisted pair.

b) Voltages swing between 2.00 and -2.00 volts on coaxial cables or between -1.5 V to +2.5 V on twisted pair.

c) Voltages swing between 0 and -2.05 volts on twisted pair or between -2.5 V to +2.5 V on coaxial cables.

d) all of the mentioned

Answer: Voltages swing between 0 and -2.05 volts on coaxial cables or between -2.5 V to +2.5 V on twisted pair.

2. connectors used in industrial Ethernet ____________

a) Screw type N connectors

b) D type connectors and DB- type connectors

c) RJ -45 and M12 connectors

d) all of the mentioned

Answer: all of the mentioned

3. Ethernet frame consists of ____________

a) MAC address

b) IP address

c) Default mask

d) Network address

Answer: MAC address

4. A point-to-point protocol over ethernet is a network protocol for __________

a) encapsulating PPP frames inside ethernet frames

b) encapsulating ehternet framse inside PPP frames

c) for security of ethernet frames

d) for security of PPP frames

Answer: encapsulating PPP frames inside ethernet frames

5. The maximum size of payload field in ethernet frame is __________

a) 1000 bytes

b) 1200 bytes

c) 1300 bytes

d) 1500 bytes

Answer: 1300 bytes

6. MAC address is of ___________

a) 24 bits

b) 36 bits

c) 42 bits

d) 48 bits

Answer: 48 bits

7. Ethernet in metropolitan area network (MAN) can be used as ___________

a) pure ethernet

b) ethernet over SDH

c) ethernet over MPLS

d) all of the mentioned

Answer: all of the mentioned

8. High speed ethernet works on _________

a) coaxial cable

b) twisted pair cable

c) optical fiber

d) unshielded twisted pair cable

Answer: optical fiber

9. An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called _______

a) short frame

b) runt frame

c) mini frame

d) man frame

Answer: runt frame

10. What is interframe gap?

a) idle time between frames

b) idle time between frame bits

c) idle time between packets

d) idle time between networks

Answer: idle time between frames

11. What is start frame delimeter (SFD) in ethernet frame?

a) 10101010

b) 10101011

c) 00000000

d) 11111111

Answer: 10101011

12. What is autonegotiation?

a) a procedure by which two connected devices choose common transmission parameters

b) a security algorithm

c) a routing algorithm

d) encryption algorithm

Answer: a procedure by which two connected devices choose common transmission parameters