Internetworking Questions and Answers

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Q1
How does a host on an Ethernet LAN know when to transmit after a collision has occurred? 1  In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.    2 In a CSMA/CD collision domain, stations must wait until the media is not in use before       transmitting.    3 You can improve the CSMA/CD network by adding more hubs.    4 After a collision, the station that detected the collision has first priority to resend the lost data.    5 After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
  • A 1 and 3
  • B 2 and 4
  • C 1,3 and 4
  • D 2 and 5
Answer: Option D
Q2
Which of the following types of connections can use full duplex?     Hub to hub     Switch to switch     Host to host     Switch to hub     Switch to host
  • A 1, 2 and 4
  • B 3 and 4
  • C 3 and 5
  • D 2, 3 and 5
Answer: Option D
Q3
Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?
  • A Layer 2
  • B Layer 3
  • C Layer 4
  • D Layer 7
Answer: Option C
Q4
Which fields are contained within an IEEE Ethernet frame header?     Source and destination MAC address     Source and destination network address     Source and destination MAC address and source and destination network address     FCS field
  • A 1 and 4
  • B 2 only
  • C 2 and 3 only
  • D 3 only
Answer: Option A
Q5
What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
  • A Straight-through
  • B Crossover cable
  • C Crossover with a CSU/DSU
  • D Rolled
Answer: Option D
Q6
How to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
  • A Thicknet coax
  • B Thinnet coax
  • C Category 5 UTP cable
  • D Fiber-optic cable
Answer: Option D
Q7
Segmentation of a data stream happens at which layer of the OSI model?
  • A Physical
  • B Data Link
  • C Network
  • D Transport
Answer: Option D
Q8
When data is encapsulated, which is the correct order?
  • A Data, frame, packet, segment, bit
  • B Segment, data, packet, frame, bit
  • C Data, segment, packet, frame, bit
  • D Data, segment, frame, packet, bit
Answer: Option C
Q9
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?     Half-duplex Ethernet operates in a shared collision domain.     Half-duplex Ethernet operates in a private collision domain.     Half-duplex Ethernet has higher effective throughput.     Half-duplex Ethernet has lower effective throughput.
  • A 2 only
  • B 1,2 and 3
  • C 1 and 4
  • D 4 only
Answer: Option C
Q10
What type of RJ45 UTP cable is used between switches?
  • A Straight-through
  • B Crossover cable
  • C Crossover with a CSU/DSU
  • D Crossover with a router in between the two switches
Answer: Option B

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