True/False Indicate whether the
statement is true or false.
|
|
1.
|
Every process that occurs during network communications can be associated with a
layer of the OSI Model.
|
|
2.
|
Among the Session layer’s functions are establishing and keeping alive the
communications link for the duration of the session, keeping the communication secure, synchronizing
the dialogue between the two nodes, determining whether communications have been cut off, and, if so,
figuring out where to restart transmission, and terminating communications.
|
|
3.
|
The primary function of protocols at the session layer is to translate network
addresses into their physical counterparts and decide how to route data from the sender to the
receiver.
|
|
4.
|
Addressing is a system for assigning unique identification numbers to devices on
a network.
|
|
5.
|
Connectivity devices such as hubs and repeaters operate at the Presentation
layer of the OSI Model.
|
Multiple Choice Identify the
choice that best completes the statement or answers the question.
|
|
6.
|
____ are documented agreements containing technical specifications or other
precise criteria that stipulate how a particular product or service should be designed or
performed.
a. | Protocols | c. | Sessions | b. | Standards | d. | Routers |
|
|
7.
|
____ is an organization composed of more than a thousand representatives from
industry and government who together determine standards for the electronics industry and other
fields, such as chemical and nuclear engineering, health and safety, and construction.
|
|
8.
|
____ is a trade organization composed of representatives from electronics
manufacturing firms across the United States.
|
|
9.
|
The ____ is a specialized United Nations agency that regulates international
telecommunications, including radio and TV frequencies, satellite and telephony specifications,
networking infrastructure, and tariffs applied to global communications.
|
|
10.
|
____ is a technical advisory group of researchers and technical professionals
interested in overseeing the Internet’s design and management.
|
|
11.
|
Addresses used to identify computers on the Internet and other TCP/IP-based
networks are known as ____ addresses.
|
|
12.
|
The Application layer separates data into ____ or discrete amounts of
data.
a. | network addresses | c. | sessions | b. | tokens | d. | protocol data
units |
|
|
13.
|
The top, or seventh, layer of the OSI Model is the ____ layer
a. | Application | c. | Transport | b. | Session | d. | Network |
|
|
14.
|
Through ____ layer protocols, software applications negotiate their formatting,
procedural, security, synchronization, and other requirements with the network.
a. | Session | c. | Data link | b. | Application | d. | Transport |
|
|
15.
|
Protocols at the ____ layer accept Application layer data and format it so that
one type of application and host can understand data from another type of application and
host.
a. | Data link | c. | Presentation | b. | Physical | d. | Network |
|
|
16.
|
Protocols in the ____ layer coordinate and maintain communications
between two nodes on the network.
a. | Application | c. | Data link | b. | Physical | d. | Session |
|
|
17.
|
____ are added to data at the source and verified at the destination.
a. | Segments | c. | Checksums | b. | Packets | d. | Frames |
|
|
18.
|
Transport layer protocols break large data units received from the Session layer
into multiple smaller units, called ____.
a. | segments | c. | frames | b. | checksums | d. | sessions |
|
|
19.
|
____ is a method of identifying segments that belong to the same group of
subdivided data.
a. | Reassembly | c. | Sequencing | b. | Fragmentation | d. | Addressing |
|
|
20.
|
A(n) ____ is a structured package for moving data that includes not only the raw
data, or “payload,” but also the sender’s and receiver’s network addresses,
and error checking and control information.
a. | segment | c. | router | b. | frame | d. | token |
|
|
21.
|
The primary function of protocols in the ____ layer, is to divide data they
receive from the Network layer into distinct frames that can then be transmitted by the Physical
layer.
a. | Application | c. | Transport | b. | Network | d. | Data Link |
|
|
22.
|
____ addresses contain two parts: a Block ID and a Device ID.
a. | IP | c. | Session | b. | MAC | d. | Ethernet |
|
|
23.
|
The ____ layer is the lowest, or first, layer of the OSI Model.
a. | Physical | c. | Transport | b. | Application | d. | Data link |
|
|
24.
|
Protocols at the ____ layer accept frames from the Data Link layer and generate
voltage so as to transmit signals.
a. | Session | c. | Network | b. | Application | d. | Physical |
|
|
25.
|
Connectivity devices such as hubs and repeaters operate at the ____
layer.
a. | Session | c. | Application | b. | Physical | d. | Network |
|
|
26.
|
____ is the process of gauging the appropriate rate of transmission based on how
fast the recipient can accept data.
a. | Flow control | c. | Segmentation | b. | Routing | d. | Virtual
addressing |
|
Completion Complete each
statement.
|
|
27.
|
The __________________________________________________ goal is to establish
international technological standards to facilitate global exchange of information and barrier-free
trade.
|
|
28.
|
____________________ layer services facilitate communication between software
applications and lower-layer network services so that the network can interpret an
application’s request and, in turn, the application can interpret data sent from the
network.
|
|
29.
|
Transport layer protocols that do not establish a connection before transmission
and make no effort to ensure that data is delivered error-free are called ____________________
protocols.
|
|
30.
|
____________________ is the process of reconstructing the segmented data
units.
|
|
31.
|
At the Network layer, ____________________ ensures that packets issued to the
network are no larger than the network’s maximum transmission unit size.
|
Matching
|
|
|
Match each term with the correct statement below. a. | Standards | f. | TCP | b. | International Telecommunication
Union | g. | Checksum | c. | Internet Architecture Board | h. | Sequencing | d. | ICANN | i. | Router | e. | ISP |
|
|
32.
|
Responsible for Internet growth and management strategy, resolution of
technical disputes, and standards oversight.
|
|
33.
|
A connection-oriented protocol.
|
|
34.
|
Define the minimum acceptable performance of a product or service.
|
|
35.
|
A unique character string that allows the receiving node to determine if an
arriving data unit matches exactly the data unit sent by the source.
|
|
36.
|
Responsible for IP addressing and domain name management.
|
|
37.
|
A method of identifying segments that belong to the same group of subdivided
data.
|
|
38.
|
A business that provides organizations and individuals with access to the
Internet and often, other services, such as e-mail and Web hosting.
|
|
39.
|
Device that connects network segments and direct data.
|
|
40.
|
Provides developing countries with technical expertise and equipment to advance
those nations’ technological bases.
|
Short Answer
|
|
41.
|
What are the goals of the Institute of Electrical and Electronics
Engineers?
|
|
42.
|
What are the functions of the Session layer (OSI model)?
|
|
43.
|
With respect to Network layer protocols, what are the factors to be considered
when determining the path from point A on one network to point B on another network?
|
|
44.
|
What is the difference between Ethernet and Token Ring?
|
|
45.
|
What is the purpose of the Internet Engineering Task Force?
|
|
46.
|
What is the purpose of the Hypertext Transfer Protocol?
|
|
47.
|
What is the difference between a connection oriented protocol and a
connectionless protocol?
|
|
48.
|
Provide a brief description of each of the layers of the OSI model.
|
|
49.
|
What is the difference between a packet and a frame?
|
|
50.
|
Why is it important for you to know what frame type your network environment
requires?
|