1.3 Compare Physical Interface and Cabling Types 200-301 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A network engineer is connecting two campus buildings that are 2 km apart. The link will carry aggregated traffic from multiple access switches and must support future 40 Gbps uplinks. The budget allows for new transceivers but not for new conduit. Which cabling choice best meets the requirement?

   • ASingle-mode fiber with 9/125 µm core and laser-based optics
   • BMultimode fiber OM3 with 50/125 µm core and VCSEL optics
   • CCategory 6a UTP copper with 10GBASE-T transceivers
   • DMultimode fiber OM4 with 50/125 µm core and LED-based optics
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   Why does a full-duplex point-to-point Ethernet link not require CSMA/CD?

   • ABecause there are only two devices on the link, and each has its own transmit and receive pair
   • BBecause the link uses a hub to manage access
   • CBecause the switch buffers all frames before forwarding
   • DBecause only one device can transmit at a time
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   A network engineer needs to connect two buildings that are 15 kilometers apart. Which fiber optic cabling characteristic is most important for this application?

   • AA cladding that reflects light to increase the number of modes
   • BA large core diameter to allow multiple light paths
   • CA small core diameter with a laser-based light source
   • DA plastic core that is less expensive to manufacture
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   In a legacy Ethernet network using a shared hub, what happens when two devices transmit at the same time?

   • AThe hub stores the frames and forwards them one at a time
   • BThe frames are forwarded to the correct destination without issue
   • CThe devices immediately retransmit without waiting
   • DA collision occurs, and the devices use CSMA/CD to back off and retransmit
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A network engineer is replacing an old hub with a switch to improve performance. Which statement correctly describes the expected improvement?

   • AThe switch will create one large broadcast domain
   • BThe switch will increase the maximum cable length to 200 meters
   • CThe switch will still use CSMA/CD on all ports
   • DEach switch port becomes its own collision domain, allowing full-duplex operation
   Reveal Solution Discussion Select an answer first