CCNA 1 v7.0 Modules 4 - 7: Ethernet Concepts Exam

With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs? the magnetic field around the adjacent pairs of wire In addition to the cable length, what two factors could interfere with the communication carried over UTP cables? crosstalk / electromagnetic interference Which two devices commonly affect wireless networks? cordless phones / microwaves Which two statements describe the services provided by the data link layer? 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 What is the function of the CRC value that is found in the FCS field of a frame? to verify the integrity of the received frame What is contained in the trailer of a data- link frame? error detection Which statement describes a characteristic of the frame header fields of the data link layer? They vary depending on protocols. A network team is comparing physical WAN topologies for connecting remote sites to a partial mesh 11/6/25, 7:53 PM CCNA 1 v7.0 Modules 4 - 7: Ethernet Concepts Exam / 2/9 headquarters building. Which topology provides high availability and connects some, but not all, remote sites? Which two fields or features does Ethernet examine to determine if a received frame is passed to the data link layer or discarded by the NIC? Frame Check Sequence / minimum frame size Which media communication type does not require media arbitration in the data link layer? full-duplex Which statement describes an extended star topology? End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.* What is a characteristic of the LLC sublayer? It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.* 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 & Data link layer protocols define the rules for access to different media During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network? The physical address is added. What three items are contained in an Ethernet header and trailer? source MAC address / destination MAC address / error-checking information What type of communication rule would best describe access method 11/6/25, 7:53 PM CCNA 1 v7.0 Modules 4 - 7: Ethernet Concepts Exam CSMA/CD? Which three basic parts are common to all frame types supported by the data link layer? header / data / trailer 3/9 / 11/6/25, 7:53 PM CCNA 1 v7.0 Modules 4 - 7: Ethernet Concepts Exam / 4/9 Which statement is true about the CSMA/CD access method that is used in Ethernet? All network devices must listen before transmitting What is the auto-MDIX feature on a switch? the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to a port connected to a 100Base-T network. Which method of memory buffering would work best for this task? shared memory buffering What are two examples of the cut-through switching method fast-forward switching / fragment-free switching Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame? store-and-forward switching