Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the
exhibit, but there is no data connectivity between them. The Atlanta router is known to have a
correct configuration.
Given the partial configurations shown in the exhibit, what is the problem on the Brevard router
that is causing the lack of connectivity?
A.
A loopback is not set.
B.
The IP address is incorrect.
C.
The subnet mask is incorrect.
D.
The serial line encapsulations are incompatible.
E.
The maximum transmission unit (MTU) size is too large.
F.
The bandwidth setting is incompatible with the connected interface.
Explanation:
Topic 8, Simulation
https://en.wikipedia.org/wiki/High-Level_Data_Link_Control
High-Level Data Link Control (HDLC) is a bit-oriented code-transparent synchronous data link
layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are:
ISO 3309 – Frame Structure
ISO 4335 – Elements of Procedure
ISO 6159 – Unbalanced Classes of Procedure
ISO 6256 – Balanced Classes of Procedure
The current standard for HDLC is ISO 13239, which replaces all of those standards.
HDLC provides both connection-oriented and connectionless service.
HDLC can be used for point to multipoint connections, but is now used almost exclusively to connect one device to another, using what is known as Asynchronous Balanced Mode (ABM). The original master-slave modes Normal Response Mode (NRM) and Asynchronous Response Mode (ARM) are rarely used.
0
0
Loopback and IP address
An address that sends outgoing signals back to the same computer for testing. In a TCP/IP network, the loopback IP address is 127.0.0.1, and pinging this address will always return a reply unless the firewall prevents it.
0
0