which statement is correct?

Refer to the exhibit.

The show interfaces serial 0/1 command was issued on the R10-1 router. Based on the output
displayed which statement is correct?

Refer to the exhibit.

The show interfaces serial 0/1 command was issued on the R10-1 router. Based on the output
displayed which statement is correct?

A.
The cable connected to the serial 0/1 interface of the R10-1 router is a DTE cable.

B.
The R10-1 router can ping the router interface connected to the serial 0/1 interface.

C.
The clock rate used for interface serial 0/1 of the R10-1 router is 1,544,000 bits per second.

D.
The CSU used with the serial 0/1 interface of the R10-1 router has lost connection to the service
provider.

E.
The interface of the remote router connected to the serial 0/1 interface of the R10-1 router is
using the default serial interface encapsulation.

Explanation:
Cisco High-Level Data Link Controller (HDLC) is the Cisco proprietary protocol for Cisco HDLC is the
default encapsulation type for the serial interfaces.



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JAYNONIMOUS

JAYNONIMOUS

Crappy explanation. There is no way to confirm any of the other answers.

E is correct because we can see that the interface is up/up. If the interface was up/down, it would indicate that there is something connected and that the router is sensing bits on the wire, but that either clocking is not set or that a different type of layer 2 encapsulation is being used. Because the link is up/up and the show interface output states that the layer 2 method is HDLC, we can safely assume that the remote side of the connection is also using HDLC. HDLC is the cisco default layer 2 encapsulation method. The non-cisco default, vendor inter-operable method of encapsulation is PPP.

jon

jon

Layer 2 is up, so we know that HDLC is the encapsulation setting on the other interface and the packets received confirm this for answer E.