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Questions and Answers
What is the primary function of the Data Link Layer?
What is the primary function of the Data Link Layer?
- To route packets between different networks
- To encapsulate Layer 3 packets into Layer 2 frames (correct)
- To control the flow of data between nodes
- To assign IP addresses to devices
What is the purpose of the LLC sublayer?
What is the purpose of the LLC sublayer?
- To provide error detection and correction
- To manage media access control
- To assign IP addresses to devices
- To communicate between networking software and device hardware (correct)
What is the function of the MAC sublayer?
What is the function of the MAC sublayer?
- To assign IP addresses to devices
- To route packets between different networks
- To provide logical link control
- To manage media access control and data encapsulation (correct)
What is the purpose of the Data Link Layer in terms of error detection?
What is the purpose of the Data Link Layer in terms of error detection?
What is the relationship between the Data Link Layer and the Physical Layer?
What is the relationship between the Data Link Layer and the Physical Layer?
What is the purpose of the IEEE 802 LAN/MAN standards?
What is the purpose of the IEEE 802 LAN/MAN standards?
What is the function of the Data Link Layer in terms of Layer 3 packets?
What is the function of the Data Link Layer in terms of Layer 3 packets?
What is the purpose of the Data Link Layer in terms of network interfaces?
What is the purpose of the Data Link Layer in terms of network interfaces?
What does the data link layer 'see' when controlling data access to the media?
What does the data link layer 'see' when controlling data access to the media?
What is the primary purpose of the Data Link Layer?
What is the primary purpose of the Data Link Layer?
What is the result of a duplex mismatch between two interconnected interfaces?
What is the result of a duplex mismatch between two interconnected interfaces?
What influences the type of network framing and media access control used?
What influences the type of network framing and media access control used?
What is the function of the MAC sublayer?
What is the function of the MAC sublayer?
What is the simplest and most common WAN topology?
What is the simplest and most common WAN topology?
What is the process called when a router receives a frame, de-encapsulates the packet, and re-encapsulates it into a new frame?
What is the process called when a router receives a frame, de-encapsulates the packet, and re-encapsulates it into a new frame?
What is a characteristic of a hub and spoke WAN topology?
What is a characteristic of a hub and spoke WAN topology?
What is a benefit of a mesh WAN topology?
What is a benefit of a mesh WAN topology?
What type of communication allows both devices to simultaneously transmit and receive on a shared medium?
What type of communication allows both devices to simultaneously transmit and receive on a shared medium?
What is the primary function of a router interface?
What is the primary function of a router interface?
What is a characteristic of a physical point-to-point WAN topology?
What is a characteristic of a physical point-to-point WAN topology?
What is a benefit of using a serial communications protocol like Point-to-Point Protocol (PPP) in a WAN?
What is a benefit of using a serial communications protocol like Point-to-Point Protocol (PPP) in a WAN?
How do devices operate when they have the same duplex mode?
How do devices operate when they have the same duplex mode?
What is a characteristic of Point-to-Point WAN protocols?
What is a characteristic of Point-to-Point WAN protocols?
What happens to packets as they travel from a local host to a remote host?
What happens to packets as they travel from a local host to a remote host?
What happens when two devices transmit at the same time?
What happens when two devices transmit at the same time?
What mode do CSMA/CD and CSMA/CA operate in?
What mode do CSMA/CD and CSMA/CA operate in?
What is the purpose of the collision detection process in CSMA/CD?
What is the purpose of the collision detection process in CSMA/CD?
What happens to the data sent by both devices in the event of a collision?
What happens to the data sent by both devices in the event of a collision?
What is an Ethernet hub also known as?
What is an Ethernet hub also known as?
What is the main difference between CSMA/CD and CSMA/CA?
What is the main difference between CSMA/CD and CSMA/CA?
What does the NIC compare during the collision detection process?
What does the NIC compare during the collision detection process?
What is the purpose of the collision avoidance process in CSMA/CA?
What is the purpose of the collision avoidance process in CSMA/CA?
What is the purpose of including the time duration in the transmission in CSMA/CA?
What is the purpose of including the time duration in the transmission in CSMA/CA?
Why do Ethernet LANs using switches not use a contention-based system?
Why do Ethernet LANs using switches not use a contention-based system?
What is the purpose of the data link layer wrapping the Layer 3 PDU with a header and trailer?
What is the purpose of the data link layer wrapping the Layer 3 PDU with a header and trailer?
What is the primary function of the data link protocol?
What is the primary function of the data link protocol?
What are the three parts of a data link frame?
What are the three parts of a data link frame?
What determines the amount of control information carried in a data link frame?
What determines the amount of control information carried in a data link frame?
What is the purpose of the header and trailer in a data link frame?
What is the purpose of the header and trailer in a data link frame?
What is the result of the CSMA/CA collision avoidance process?
What is the result of the CSMA/CA collision avoidance process?
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