COMPTIA NETWORK +, Professor Messer network+, Comptia Network+ n10-008 All Questions with Complete Solutions (A+ Paper)
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What is the OSI model? Correct Answer Open System Interconnection: A model used to conceptualize the many parts of a network.
What is the TCP/IP model? Correct Answer Transmission Control Protocol/Internet Protocol: a model used to conceptualize the many parts of a network.
What is ISO (the c...
COMPTIA NETWORK +, Professor Messer network+, Comptia Network+ n10-008 All Questions with Complete Solutions (A+ Paper)
What is the OSI model? Correct Answer Open System Interconnection: A model used to
conceptualize the many parts of a network.
What is the TCP/IP model? Correct Answer Transmission Control Protocol/Internet Protocol: a model used to conceptualize the many parts of a network.
What is ISO (the creators of the OSI model)? Correct Answer The International Organization for Standardization.
What are the 7 levels of the OSI Model? Correct Answer From Top to Bottom:
7)Application
6)Presentation
5) Session
4) Transport
3) Network
2) Data Link
1) Physical
What is the First Layer of the OSI Model? Correct Answer The Physical Layer: This layer is comprised of the Physical Components used to transport data from one place to another. This can be anything from copper cabling to Radio Waves from a WAP.
What is UTP? Correct Answer Unshielded Twisted pair.
What is a NIC? Correct Answer *Network Interface Card* - a communication controller that is required by a computer to connect to a network.
*• Translates the computer data to the protocol used by the network.*
What is a MAC Address? Correct Answer Media Access Control Address: a 48 bit address unique to each NIC.
What is the IEEE? Correct Answer Institute of Electrical and Electronics Engineers
What is OUI? Correct Answer Organizationally Unique Identifier: the first six digits of a MAC Address, these are the parts of MAC addresses assigned to organizations. What is ipconfig? Correct Answer Ipconfig is a utility program that is commonly used to identify the addresses information of a computer on a network. It can show the physical address as well as the IP address.
What is ipconfig/ all? Correct Answer A more detailed version of ipconfig.
What is ifonfig? Correct Answer The ipconfig command but for users of Mac Os.
What is ip a? Correct Answer Ipconfig for Linux users.
What is EUI-48? Correct Answer Extended Unique Identifier: the name for the address space that MAC addresses occupy.
What is MAC-48? Correct Answer The original name for the numbering space MAC addresses occupy.
What is a Frame? Correct Answer A container for a chunk of data moving across a network. This is a "wrapper" placed on data by a NIC. These are sent, received, and read by nics.
What is a PDU? Correct Answer Protocol Data Unit: The unit of data specified by a protocol at each layer of the OSI Model.
Describe an Ethernet Frame from beginning to End. Correct Answer What is FCS? Correct Answer A Frame Check Sequence(FCS) is error detection method used by PPP encapsulation. If the FCS key does not match the receiving NIC's answer, the data was not received properly, and the frame is dropped.
What is PPP? Correct Answer Point-to-Point Protocol
What is CRC? Correct Answer Cyclical Redundancy Check: the section at the end of an
Ethernet Frame that is used to ensure that the data was received intact.
What is a HUB? Correct Answer A precursor to modern switches, this network device would receive data from a host and then would forward this data to every host on the network.
Describe layer 2 of the OSI Model Correct Answer Data Link Layer: This layer deals with the forwarding of information based on MAC addresses. Switches and nics operate at this level. PDU= Frames. Routers function at this layer
What is LLC? Correct Answer Logical Link Control:
The aspect of a NIC that talks to the systems operating system What is TCP? Correct Answer Transmission Control Protocol
Describe layer 3 of the OSI Model. Correct Answer The Network Layer:
This layer deals with logical addressing and routing. PDU= Packets
Describe an IP packet from beginning to end. Correct Answer Describe Layer 4 of the OSI Model. Correct Answer The Transport Layer:
This Layer handles the segmentation and reassembly of data to be sent and received as IP packets. Data is broken up as segments or datagrams, each of which receive a sequence number to allow for the reassembly of the data at the other end of the connection.
Describe Layer 5 of the OSI Model. Correct Answer The Session Layer:
This layer manages a systems sessions. It initiates sessions, accepts incoming sessions, and opens and closes existing sessions.
Describe Layer 6 of the OSI Model. Correct Answer The Presentation Layer:
This layer translates data from the lower levels for use by the application layer and vice versa.
Describe Layer 7 of the OSI Model. Correct Answer The Application Layer:
This is perhaps the most visible layer of the OSI Model. It does not refer directly to the applications that one may use, but instead refers to the coding that enables network aware applications.
What is API? Correct Answer Application Programming Interface:
Coding that can be used to make applications network aware.
What is encapsulation? Correct Answer The entire process of preparing data to go onto a network.
What are the 4 layers of the TCP/IP Model? Correct Answer 4) Application Layer
3) Transport Layer
2) Internet Layer
1) Link/Network Interface
Describe the first layer of the TCP/IP Model. Correct Answer The Link/Network Interface
Layer: A combination of layers 1and 2 of the OSI model, this layer deals with the physical aspects of networking. PDU= Frames
Describe the second layer of the TCP/IP Model. Correct Answer The Internet Layer:
IP addressing takes place at this layer; IP packets are created at this layer; any devices/protocols that deal purely with IP packets sit at this layer.
This layer is the "IP Packet layer".
Describe the fourth layer of the TCP/IP Model. Correct Answer The Transport Layer: This layer combines features of the OSI Transport and session layers, and some of the application layer.
Which layer of the TCP/IP model controls the segmentation and reassembly of data? Correct Answer The Transport Layer
Which Layer of the OSI Model keeps track of a system's connections to send the right response to the right computer? Correct Answer The Session Layer
Describe the coaxial cable. Correct Answer A cable that contains a central conductor wire surrounded by an insulating material, surrounded by a braided metal shield. Coax because the tire and shield share a common axis. The metal shield helps to protect from EMI.
What is EMI? Correct Answer Electromagnetic Interference:
Extra electrical current generated by electrical other machines.
What is a BNC connector? Correct Answer Either British Naval Connector, or Bayonet Neillconcelman: this stick and twist style is commonly seen with coaxial cables.
Describe an F Connector. Correct Answer An F Connector is typically seen with the coaxial cables used by cable companies and their modems. These screw on to their connecting locations to secure the connection.
What is RG-59? Correct Answer A common coaxial cable type used primarily for cable television. Its thinness and the intro of digital cable caused this type of cable to become outdated.
What is RG-6? Correct Answer A common coaxial cable type used for digital cable television.
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