Module 6 Test Questions
Which two functions are performed at the LLC sublayer of the OSI data link layer? Adds Layer 2 control information to network protocol data Enables IPv4 and IPv6 to utilize the same network interface and media Provides data link layer addressing Implements a trailer to detect transmission errors Provides synchronization between source and target nodes
Adds Layer 2 control information to network protocol data Enables IPv4 and IPv6 to utilize the same network interface and media. (pg. 16)
Which two functions are performed at the LLC sublayer of the OSI data link layer? Adds Layer 2 control information to network protocol data Places information in the frame that identifies which network layer protocol is being used for the frame Performs data encapsulation Controls the NIC responsible for sending and receiving data on the physical medium Integrates various physical technologies
Adds Layer 2 control information to network protocol data Places information in the frame that identifies which network layer protocol is being used for the frame. (pg. 14)
What are contention-based access methods which operate at half-duplex?
CSMA/CD and CSMA/CA. (pg. 28)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Controls the NIC responsible for sending and receiving data on the physical medium Integrates various physical technologies Communicates between the networking software at the upper layers and the device hardware at the lower layers Adds Layer 2 control information to network protocol data Places information in the frame that identifies which network layer protocol is being used for the frame
Controls the NIC responsible for sending and receiving data on the physical medium Integrates various physical technologies. (pg. 13)
Which two functions are performed at the LLC sublayer of the OSI data link layer? Enables IPv4 and IPv6 to utilize the same network interface and media Adds Layer 2 control information to network protocol data Integrates various physical technologies Implements a trailer to detect transmission errors Provides synchronization between source and target nodes
Enables IPv4 and IPv6 to utilize the same network interface and media Adds Layer 2 control information to network protocol data (pg. 18)
Which two functions are performed at the LLC sublayer of the OSI data link layer? Enables IPv4 and IPv6 to utilize the same network interface and media Places information ion the frame that identifies which network layer protocol is being used for the frame Integrates various physical technologies Implements a process to delimit fields within a Layer 2 frame Controls the NIC responsible for sending and receiving data on the physical medium
Enables IPv4 and IPv6 to utilize the same network interface and media Places information in the frame that identifies which network layer protocol is being used for the frame. (pg. 11)
What is contained in the trailer of a data-link frame? Logical address Physical address Data Error detection
Error detection. (pg. 37)
What are three ways that media access control is used in networking? Ethernet utilizes CSMA/CD Media access control provides placement of data frames onto the media Contention-based access is also known as deterministic 802.11 utilizes CSMA/CD Data link layer protocols define the rules for access to different media Networks with controlled access have reduced performance due to data collisions
Ethernet utilizes CSMA/CD Media access control provides placement of data frames onto the media Data link layer protocols define the rules for access to different media. (pg. 32)
Which media communication type does not require media arbitration in the data link layer (No need for CSMA/CD)? Deterministic Half-duplex Full-duplex Controlled access
Full-duplex. (pg. 31)
What are the three parts of a data link frame?
Header, Data, Trailer. (pg. 34)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Implements a trailer to detect transmission errors Controls the NIC responsible for sending and receiving data on the physical medium Places information in the frame that identifies which network layer protocol is being used for the frame Adds Layer 2 control information to network protocol data Enables IPv4 and IPv6 to utilize the same network interface and media
Implements a trailer to detect transmission errors Controls the NIC responsible for sending and receiving data on the physical medium. (pg. 10)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Implements a trailer to detect transmission errors Provides synchronization between source and target nodes Places information in the frame that identifies which network layer protocol is being used for the frame Enables IPv4 and IPv6 to utilize the same network interface and media Adds Layer 2 control information to network protocol data
Implements a trailer to detect transmission errors Provides synchronization between sources and target nodes. (pg. 17)
What does the Addressing Data Link Frame Field do?
Indicates source MAC and destination MAC. (pg. 35)
Which two statements describe the services provided by the data link layer? It defines the end-to-end delivery addressing scheme It maintains the path between the source and destination devices during the data transmission It manages the access of frames to the network media It provides reliable delivery through link establishment and flow control It ensures that application data will be transmitted according to the prioritization It packages various Layer 3 PDUs into a frame format that is compatible with the network interface
It manages the access of frames to the network media It packages various Layer 3 PDUs into a frame format that is compatible with the network interface. (pg. 8)
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites? Mesh Partial mesh Hub and spoke Point-to-point
Partial mesh. (pg. 23)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Provides a mechanism to allow multiple devices to communicate over a shared medium Controls the NIC responsible for sending and receiving data on the physical medium Places information in the frame that identifies which network layer protocol is being used for the frame Adds Layer 2 control information to network protocol data Enables IPv4 and IPv6 to utilize the same network interface and media
Provides a mechanism to allow multiple devices to communicate over a shared media Controls the NIC responsible for sending and receiving data on the physical medium. (pg. 19)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Provides a mechanism to allow multiple devices to communicate over a shared medium Controls the NIC responsible for sending and receiving data on the physical medium Places information in the frame that identifies which network layer protocol is being used for the frame Adds Layer 2 control information to network protocol data Communicates between the networking software at the upper layers and the device hardware at the lower layers
Provides a mechanism to allow multiple devices to communicate over a shared medium Controls the NIC responsible for sending and receiving data on the physical medium. (pg. 12)
Which two functions are performed at the MAC sublayer of the OSI data link layer? Provides synchronization between source and target nodes Integrates various physical technologies Communicates between the networking software at the upper layers and the device hardware at the lower layers Adds Layer 2 control information to network protocol data Enables IPv4 and IPv6 to utilize the same network interface and media
Provides synchronization between source and target nodes Integrates various physical technologies. (pg. 15)
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network? An IP address is added The logical address is added The physical address is added The process port number is added
The physical address is added. (pg. 39)
Which statement describes a characteristic of the frame headers fields of the data link layer? They all include the flow control and logical connection fields Ethernet frame header fields contain Layer 3 source and destination addresses They vary depending on protocols They include information on user applications
They vary depending on protocols. (pg. 36)
Which statement describes an extended star topology? End devices connect to a central intermediate device, which in turn connects to other central intermediate devices End devices are connected together by a bus and each bus connects to a central intermediate device Each end system is connected to its respective neighbor via an intermediate device All end and intermediate devices are connected in a chain to each other
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices. (pg. 28)
What is a characteristic of the LLC sublayer? It provides the logical addressing required that identifies the device It provides delimitation of data according to the physical signaling requirements of the medium It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media It defines software processes that provide services to the physical layer
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media. (pg. 9)
True or False. All network devices using CSMA/CD must listen before transmitting?
True. (pg. 29)
What does the Error Detection Data Link Frame Field do?
Used for determine transmission errors or error-checking information. (pg. 35)
