Cisco Certified Network Associate (CCNA) Practice Exam

What is the typical clockrate set on the DCE side of a serial connection?

1. 9600

2. 32000

3. 64000

4. 128000

The correct answer is: 64000

The typical clock rate set on the DCE (Data Communications Equipment) side of a serial connection is commonly set to 64,000 bps (bits per second), which is why the choice reflecting this is considered correct for many serial link configurations. This clock rate allows for appropriate synchronization between devices on a serial link and is especially relevant in scenarios like communication between routers or between a router and a modem. While other clock rates can certainly be configured depending on the specific requirements or capabilities of the equipment, 64,000 bps is frequently used as a standard for many serial link implementations, particularly in older networking environments. Understanding the clock rate is vital because it directly affects the data transmission rate over the serial connection, ensuring that both devices operate in sync and can effectively communicate with each other.