120 Chapter 3: OSI Reference Model & Layered Communication
19
Are OSI NSAP addresses defined by a Layer 2 or Layer 3 protocol?
20
What portion of a MAC address encodes an identifier representing the manufacturer of the
card?
21
Are MAC addresses defined by a Layer 2 or Layer 3 protocol?
22
Are DLCI addresses defined by a Layer 2 or Layer 3 protocol?
23
Name two differences between Layer 3 addresses and Layer 2 addresses.
24
How many bits are present in an IP address?
25
How many bits are present in an IPX address?
26
How many bits are present in a MAC address?
27
Name the two main parts of an IPX address. Which part identifies which "group" this
address is a member of?
28
Name the two main parts of an IP address. Which part identifies which "group" this
address is a member of?
29
Name the two main parts of a MAC address. Which part identifies which "group" this
address is a member of?
30
Name three benefits to layering networking protocol specifications.
31
What header and/or trailer does a router discard as a side effect of routing?
32
Describe the differences between a routed protocol and a routing protocol.
33
Name at least three routed protocols.
34
Name at least three routing protocols.
35
How does an IP host know what router to send a packet to? In which cases does an IP host
choose to send a packet to this router instead of directly to the destination host?
36
How does an IPX host know which router to send a packet to? In which case does an IPX
host choose to send a packet to this router instead of directly to the destination host?
37
Name three items in an entry in any routing table.
38
What OSI layer typically encapsulates using both a header and a trailer?
ch03.fm Page 120 Monday, March 20, 2000 4:58 PM