Subject : Application Networking

Question 1

"Point-to-point" communication refers to;

a. mesh topology

b. multi-access networks

c. wireless telephone technology that connects from "tower-to-tower"

d. communication mechanism that connects exactly two communicating entities

Question 2

A LAN, or local area network;

a. is the least expensive network option spanning a single room or single building

b. is a medium expense and spans a major city or Metroplex

c. is the most expensive option and spans multiple sites in multiple cities

Question 3

A Logical Link Control (LLC) sublayer specifies___________, while the Media Access Control (MAC) sublayer specifies___________.

a. How multiple computers share the underlying medium; addressing and the use of addresses for demultiplexing.

b. Protocol documents that specify all details; standards from a particular protocol

c. addressing in the use of addresses for demultiplexing; how multiple computers share the underlying medium

d. multipart identifiers; 802.14 cable modem protocols

Question 4

A bridge is;

a . an analog device used to propagate LAN signals over long distances

b . a digital device used to "span" the gaps in wireless coverage

c. a mechanism that connects two LAN segments (e.g., two hubs)

d. a simple LAN extension mechanism

Question 5

A mesh network provides a direct connection between each pair of computers.

True

False

A public network;

a. Is owned by a private service provider

b. Offers service to any individual or organization that pays the subscription fee

c. Is offered as a free service by a public entity such as the US government or FIU.

d. All of the above

e. None of the above

f. A and B above

g. A and C above

Question 7

A repeater is an analog device used to propagate LAN signals over long distances.

True

False

Question 8

According to the text, is it possible to develop Internet applications without understanding the architecture of the Internet and the technologies?

a. No, as networking is extremely complex.

b. Yes, however a programmer who understands the underlying network mechanisms and technologies can write network applications that are more reliable, correct, and efficient.

c. No, as network services and facilities are each provided by application software-an application program on one computer communicates across the network within an application program running on another computer.

d. Yes, as data communication provides a physical communication medium between applications.

Question 9

Because the Internet tolerates heterogeneity, engineers can experiment with new networking technologies without disrupting the existing networks.

True

False

Question 10

Bridges blindly forward a copy of each frame from one LAN to another.

True

False

Question 11

The IEEE addressing scheme supports three types of addresses that correspond to three types of packet delivery. These types are unicast, broadcast, and multicast. Identify the correct definition for the type listed below.

Broadcast:

a. Identifies a subset of the computers on a given network, and specifies that each computer in the subset should receive a copy of the packet.

b. Corresponds to all computers, and specifies that each computer on the network should receive a copy of the packet.

c. Uniquely identifies a single computer, and specifies that only the identified computer should receive a copy of the packet.