350-001 Question 8
Which of the following statement is true regarding clocking for a Cisco T1 interface?
A. The clock source command selects a source for the interface to clock received data.By default, it is clock source loop-timed (specifies that the T1/E1 interface takes the clock from the Tx (line) and uses it for Rx).
B. Routers are DTEs and NEVER supply clocking to T1/E1 line.
C. The clock source command specifies the location of the NTP server for timing.
D. The clock source selects a source for the interface to clock outgoing data.
The default is clock source line -Specifies that the T1/E1 link uses the recovered clock from the line.
E. The clock source identifies the stratum level associated with the router T1/E1. The default is Stratum1.
Answer: D
Explanation:
Clocking can either be internal, looped, or line. The default is line, meaning that the router is receiving clocking from the carrier network line.
Incorrect Answer:
C, E. These answers relate to NTP services, which are used for providing time stamping information to the router and does not relate to clocking. Stratum levels provide a hierarchy to the NTP source, with the highest level as 1.
Which of the following statement is true regarding clocking for a Cisco T1 interface?
A. The clock source command selects a source for the interface to clock received data.By default, it is clock source loop-timed (specifies that the T1/E1 interface takes the clock from the Tx (line) and uses it for Rx).
B. Routers are DTEs and NEVER supply clocking to T1/E1 line.
C. The clock source command specifies the location of the NTP server for timing.
D. The clock source selects a source for the interface to clock outgoing data.
The default is clock source line -Specifies that the T1/E1 link uses the recovered clock from the line.
E. The clock source identifies the stratum level associated with the router T1/E1. The default is Stratum1.
Answer: D
Explanation:
Clocking can either be internal, looped, or line. The default is line, meaning that the router is receiving clocking from the carrier network line.
Incorrect Answer:
C, E. These answers relate to NTP services, which are used for providing time stamping information to the router and does not relate to clocking. Stratum levels provide a hierarchy to the NTP source, with the highest level as 1.
