Network Time Protocol Concepts

The video tutorial explains the importance of time synchronization across network devices, highlighting the role of Network Time Protocol (NTP) in maintaining accurate time settings. It describes how NTP servers and clients interact, the significance of stratum levels for time accuracy, and how to configure NTP settings on devices. The tutorial emphasizes the need for synchronized clocks for log file accuracy, authentication, and outage analysis.

Why is it important to keep clocks synchronized on network devices?

• To improve network speed

• To ensure accurate log files and authentication

• To save energy

• To reduce hardware costs

What protocol is used to synchronize time on a local network?

• SMTP

• NTP

• FTP

• HTTP

Which port does an NTP server listen on?

• TCP port 80

• UDP port 123

• TCP port 443

• UDP port 53

What is the role of an NTP client?

• To request and update its time from an NTP server

• To store log files

• To provide time updates to other devices

• To manage network traffic

What is a stratum zero device?

• A device that provides the least accurate time

• A device that does not synchronize time

• An atomic clock providing very accurate time

• A device that only receives time updates

If a device synchronizes its time from a stratum one server, what stratum is it?

• Stratum zero

• Stratum two

• Stratum three

• Stratum one

Which stratum levels are most commonly seen in typical environments?

• Stratum zero and one

• Stratum one and two

• Stratum three and four

• Stratum two and three

What might you see in the date and time configuration on your device?

• The IP address of the device

• The NTP servers used for synchronization

• The network speed

• The MAC address of the device

Why might you configure multiple NTP servers on a device?

• To improve security

• To increase network speed

• To reduce power consumption

• To ensure synchronization if the primary server is unavailable

Which stratum device will a network device most likely choose to synchronize from?

• The highest stratum device

• The device with the most recent update

• The lowest stratum device

• The device with the fastest response time