13.
B. NetWare protocols map to these layers and a special frame format
is used to "access" the Data-Link layer.
14.
C. Novell uses the term Ethernet_802.3, Cisco uses Novell-Ether. See
Table 2.14.
15.
A. Cisco uses ARPA as its default Ethernet encapsulation. The other
encapsulation types can be set via the command line, but are not on by
default.
16.
B, C. Ethernet does not use a token, nor does it provide fault isolation.
It is possible that Ethernet can be faster than Token Ring, and Ether-
net also uses MAC addresses.
17.
A, C, D. Token Ring has fault isolation.
18.
D. PPP uses serial connections.
19.
E, F. Primary and secondary are the correct terms for the node types
within SDLC.
20.
D. X.25 covers layers 1 through 3 of the OSI model.
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