Lesson 2 Flashcards
Which protocol below is used to format most data packets for transmission over the Internet?
TCP/IP
Which descriptive term best describes reception quality when impacted by ‘packet loss’?
poor
The unique identifier applicable to a specific network computer or node is the Network _____.
The unique identifier application to a specific network computer or node is the network address.
This IPv4 field denotes how long the packet will be active before it is deleted
Of the many fields in the IPv4 packet, the time-to-live field indicates how long the packet will be ‘alive’ before being discarded/deleted
Which part of a data packet typically contains an error-checking algorithm?
The part of a data packet which typically contains an error-checking algorithm is both the header and footer.
Which of the following problems would the OSI Model solve?
It would allow a Mac and a PC to be used on the same network.
Which of the following terms refers to defining the rules for communication between two computers to prevent overload?
Flow Control
Which organization created the suggested standard for communications that describes how data is sent and received over a network?
ISO
The OSI (Open Systems Interconnection) model is a suggested standard for communication that was developed by the International Organization for Standardization (ISO). This model describes how data is sent and received over a network, and breaks down data transmission over a series of seven layers.
Which layer provides the physical connection between the computer and network?
Physical layer
Which of the following is NOT one of the seven layers of the OSI Model?
answer: domain layer
The OSI (Open Systems Interconnection) model is a suggested standard for communication that was developed by the International Organization for Standardization. This model breaks down data transmission over a series of seven layers: physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and application layer.
The set of rules or procedures for handling data or information transfer is called _____.
Protocols
In the OSI model, the application layer is:
7th layer
In the OSI model, the hyperlink uses a(n) _____ to name the pages on the web.
uniform resource locator
In the OSI model, what does the application layer do?
This layer actively interacts with the operating system or application when the user decides to transfer files, read messages, or perform network-related activities.
In the OSI model, all of the following are protocols of the application layer except:
ICANN
Among others, what are the two primary networking features managed by the presentation layer of the OSI model?
1: protocol
2: architecture
Which option contains the name of the layer responsible for translating, encrypting and compressing data within the OSI model?
presentation layer
The presentation layer of the OSI model is responsible for integrating all data formats into what type of form?
acceptable and compatible
The presentation layer of the OSI model translates data into an acceptable format usable by which layer?
The application layer
In some situations, the presentation layer of the OSI model may have two sub-layers associated with its operation. Which option below lists both of these sublayers?
- common application service element (case)
- specific application service element (sase)
The API that allows applications on separate computers to communicate over a LAN is:
NetBIOS
Which option below best completes this sentence: Among other communicative tasks, the session layer also terminates:
sessions between software processes
What does layer five of the OSI model do?
Establishes, manages and terminates communicative sessions
The session layer provides communicative support to which two OSI layers?
presentation and transport
Which of the following identifies the protocol or protocols available to the session layer for standardizing communications on a network?
TCP/IP
At the ‘receiving’ computer, the transport layer provides input to which OSI layer?
From the ‘receiving’ computer, the transport layer provides input to the OSI’s session layer.
The transport layer performs data packet Creation and what other types of services?
Error checking
Multiplexing is facilitated by the _____ computer and demultiplexing is facilitated by the _____ computer.
Multiplexing is accomplished on the sending computer, and demultiplexing occurs at the receiving computer.
Which protocol provides error recovery and flow control services for the transport layer?
The TCP provides error recovery and flow control services for the transport layer.
At the ‘sending’ computer, the transport layer provides input to which OSI layer?
The network layer
Which of these is not a design issue for the network layer?
Handling session information is not a design issue for the network layer because that happens on the session layer.
Which of these statements is FALSE?
The network layer does all these things except controlling the conversations between different computers. That is done by the session layer.
The network layer converts:
* Logical addresses
* MAC addresses into layers
* Physical addresses into logical addresses
* Layers into MAC addresses
Logical addresses into physical addresses
IPsec (Internet Protocol Security) works by:
Encrypting and authenticating each packet
Which layer is the network layer in the OSI 7 layer model?
The network layer is layer 3 of the OSI 7 layer model.
All of the following are functions of the Data Link Layer except
stop all bad files from passing to the physical layer
The Data Link layer is the
2nd layer
All of the following are protocols of the Data Link Layer except ____.
HTTP
Feedback-based flow control ____.
makes sure message is sent back to the sender when it is ready to accept more data
When the receiving system lets the sender know the data was received at its destination it is called ____.
acknowledgement
Which connector is NOT used in a network cable?
RJ-11
In the OSI physical layer, data is transmitted in the form of _____.
Both optical and electromagnetic signals
An NIC is used for which of the following?
Connecting a computer to a network
In which part of the OSI Model is the physical layer?
Bottom layer
Which of the following is true about half-duplex mode?
In half-duplex mode, data is transmitted in both directions but not at the same time.
