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CCNA 1 V7.0 MODULES 4 - 7: ETHERNET CONCEPTS EXAM
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -57 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation
Question 1: A network administrator is connecting two modern switches using a
straight-through cable. The switches are new and have never been configured. Which three statements are correct about the final result of the connection?
Answer:
The link between the switches will work at the fastest speed that is supported by both switches. / The link between switches will work as full-duplex. /The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.* Question 2: What OSI physical layer term describes the amount of time, including delays, for data to travel from one point to another?
Answer:
latency Question 3: What is the function of the CRC value that is found in the FCS field of a frame?
Answer:
to verify the integrity of the received frame
Question 4: Which three basic parts are common to all frame types supported by the data link layer?
Answer:
header / data / trailer Question 5: Which two functions are performed at the MAC sublayer of the OSI data link layer?
Answer:
Implements a trailer to detect transmission errors./ Controls the NIC responsible for sending and receiving data on the physical medium.Question 6: What OSI physical layer term describes the process by which one wave modifies another wave?
Answer:
modulation Question 7: What OSI physical layer term describes the measure of usable data transferred over a given period of time?
Answer:
goodput Question 8: Which advantage does the store-and-forward switching method have compared with the cut-through switching method?
Answer:
frame error checking Question 9: 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?
Answer:
partial mesh
Question 10: Which statement describes an extended star topology?
Answer:
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.*
Question 11: What is the purpose of the FCS field in a frame?
Answer:
to determine if errors occured in the transmission and reception Question 12: Which media communication type does not require media arbitration in the data link layer?
Answer:
full-duplex Question 13: what is one advantage of using the cut-through switching method instead of the store-and-forward switching method?
Answer:
has a lower latency appropriate for high-performance computing applications Question 14: What action will occur if a host receives a frame with a destination MAC address it does not recognize?
Answer:
The host will discard the frame Question 15: What action will occur if a switch receives a frame with the destination MAC address FF:FF:FF:FF:FF:FF?
Answer:
The switch forwards it out all ports except the ingress port.* Question 16: During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
Answer:
The physical address is added.
Question 17: What are two characteristics of fiber-optic cable?
Answer:
It is not affected by EMI or RFI(crosstalk) / It is more expensive than UTP cabling is
Question 18: Why are two strands of fiber used for a single fiber optic connection?
Answer:
They allow for full-duplex connectivity.* Question 19: When the store-and-forward method of switching is in use, what part of the Ethernet frame is used to perform an error check?
Answer:
CRC in the trailer Question 20: What makes fiber preferable to copper cabling for interconnecting buildings?
Answer:
greater distances per cable run/limited susceptibility to EMI/RFI , greater bandwidth potential Question 21: What OSI physical layer term describes the physical medium for microwave transmissions?
Answer:
air
Question 22: Which two devices commonly affect wireless networks?
Answer:
cordless phones / microwaves
Question 23: What is contained in the trailer of a data-link frame?
Answer:
error detection Question 24: 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?
Answer:
shared memory buffering Question 25: What OSI physical layer term describes the capacity at which a medium can carry data?
Answer:
bandwidth
