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11. BOOTP helps a diskless
workstation boot. How does it get a message to the network
looking for its IP address and the location of its operating
system boot files
BOOTP sends a UDP message with a subnetwork broadcast
address and waits for a reply from a server that gives it the IP
address. The same message might contain the name of the machine
that has the boot files on it. If the boot image location is not
specified, the workstation sends another UDP message to query
the server.
12. Explain a DNS resource record
A resource record is an entry in a name server's database.
There are several types of resource records used, including
name-to-address resolution information. Resource records are
maintained as ASCII files.
13. What protocol is used by
DNS name servers
DNS uses UDP for communication between servers. It is a
better choice than TCP because of the improved speed a
connectionless protocol offers. Of course, transmission
reliability suffers with UDP.
14. Explain the difference
between interior and exterior neighbor gateways
Interior gateways connect LANs of one organization, whereas
exterior gateways connect the organization to the outside world.
15. Explain the HELLO protocol used for
The HELLO protocol uses time instead of distance to
determine optimal routing. It is an alternative to the Routing
Information Protocol.
16. What are the advantages and disadvantages of the three
types of routing tables
The three types of routing tables are fixed, dynamic, and
fixed central. The fixed table must be manually modified every
time there is a change. A dynamic table changes its information
based on network traffic, reducing the amount of manual
maintenance. A fixed central table lets a manager modify only
one table, which is then read by other devices. The fixed
central table reduces the need to update each machine's table,
as with the fixed table. Usually a dynamic table causes the
fewest problems for a network
administrator, although the table's contents can change without
the administrator being aware of the change.
17. Explain a TCP connection table
18. Explain source route
It is a sequence of IP addresses identifying the route a
datagram must follow. A source route may
optionally be included in an IP datagram header.
19. Explain RIP (Routing Information Protocol)
It is a simple protocol used to exchange information between
the routers.
20. Explain SLIP (Serial Line Interface Protocol)
It is a very simple protocol used for transmission of IP
datagrams across a serial line.
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