Online Access Free GB0-180 Exam Questions

Which of the following wildcard masks matches all the hosts of the subnet within
172.16.64.0/19?

• A.0.0.31.255
• B.255.255.255.0
• C.255.255.224.0
• D.0.0.0.255

Which of the following statements about IP packet structure is true?

• A.Identification field in IP packet header serves as the only identity of each data packet
• B.Check sum field mainly calculates the checksum of the total IP packet
• C.IP packet header contains such information as minimum time delay, maximum throughput and highest reliability
• D.Normally, IP packet header is of 20 bytes (inclusive of IP option field)

Which of the following services adopts slide window technology

• A.Flow control
• B.Highly efficient full duplex transmission
• C.Connection-oriented virtual circuit
• D.Transmission of reliable data

The routing algorithm uses various metrics to decide the best route. The weights commonly used do NOT include( )

• A.Reliability
• B.Cost
• C.Physical distance
• D.Bandwidth

Asynchronous serial port can be configured in:

• A.Leased line mode
• B.Dial-up mode
• C.Voice access mode
• D.PRI access mode