RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019

RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019

  1. Which service is provided by an automated attendant feature on a converged network?

    • point-to-point video
    • call routing
    • IT management interface
    • video conferencing
      Explanation:

      The automated attendant feature increases the speed of voice services by routing calls directly to individuals or departments. Point-to-point video and video conferencing describe video services on a converged network. An IT management interface is part of a converged network solution that allows IT personnel to facilitate moves, adds, and changes through a centralized application.

  2. Refer to the exhibit. Fill in the blank.

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 03

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 03

    How many broadcast domains are in the topology? ​          1

    • Noted: In netacad system you can fill in one of the following: “1” or “one” but in our system you can fill in only “1“.
      Explanation:

      Adding additional switches and devices increases the broadcast domain. A broadcast sent from any PC is received by the three other PCs.

  3. When an appropriate switch form factor for a network is being determined, what should be selected when fault tolerance and bandwidth availability are desired but the budget is limited?

    • stackable switch
    • non-stackable switch
    • fixed configuration switch
    • modular switch
      Explanation:

      Stackable switches provide fault tolerance and bandwidth availability by using special cables between switches and are less costly to implement than modular switches. A non-stackable switch does not provide these features. A fixed configuration switch is a single switch that does not support features beyond those that originally came with it. A modular switch usually provides fault tolerance and features for bandwidth availability but is rather costly to implement.

  4. When the appropriate switch form factor for a network is being determined, what type of switch should be selected when future expansion is important and cost is not a limiting factor?

    • stackable switch
    • 1 rack unit switch
    • fixed configuration switch
    • modular switch
      Explanation:

      A modular switch provides fault tolerance and features for bandwidth availability and future expansion by using line cards but is rather costly to implement. Stackable switches provide fault tolerance and bandwidth availability by using special cables between the switches and are less costly to implement than modular switches. A nonstackable switch does not provide these features. A fixed configuration switch is a single switch that does not support features beyond those that originally came with it.

  5. Which statement is true about broadcast and collision domains?

    • Adding a router to a network will increase the size of the collision domain.
    • The size of the collision domain can be reduced by adding hubs to a network.
    • The more interfaces a router has the larger the resulting broadcast domain.
    • Adding a switch to a network will increase the size of the broadcast domain.
      Explanation:

      A switch that receives a broadcast frame will forward the frame out all other interfaces, including interfaces that connect to other switches. These switches will also perform the same forwarding action. By adding more switches to the network, the size of the broadcast domain increases.

  6. Which function is supplied by the access layer in a three-layer network design?

    • high-speed connectivity
    • routing
    • application of policies
    • network access
    • backbone connectivity
      Explanation:

      The main purpose of devices in the access layer is to supply network access to end users. Distribution layer devices provide services such as routing and policy functions. The core layer provides high-speed backbone connectivity.

  7. Which switching method describes a switch that transfers a frame as soon as the destination MAC address is read?

    • fragment-free
    • cut-through
    • store-and-forward
    • latency forwarding
  8. Which option correctly describes a switching method?

    • cut-through: makes a forwarding decision after receiving the entire frame
    • store-and-forward: forwards the frame immediately after examining its destination MAC address
    • cut-through: provides the flexibility to support any mix of Ethernet speeds
    • store-and-forward: ensures that the frame is free of physical and data-link errors
      Explanation:

      Store-and-forward switching performs an error check on an incoming frame after receiving the entire frame on the ingress port. Switches which use this method have the flexibility to support any mix of Ethernet speeds. The cut-through method begins the forwarding process after the destination MAC address of an incoming frame is looked up and the egress port has been determined.

  9. Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.)

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 01

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 01

    • occurs first —> The switch adds the source MAC address to the MAC address table.
    • occurs second —> Because the destination is not known, the switch forwards the frame out all ports except the port through which the frame arrived.
      Explanation:

      The first step a switch does when processing a frame is to see if the source MAC address is in the MAC address table. If the address is not there, the switch adds it. The switch then examines the destination MAC address and compares it to the MAC address table. If the address is in the table, the switch forwards the frame out the corresponding port. If the address is missing from the table, the switch will forward the frame to all ports except the port through which the frame arrived.

  10. Which impact does adding a Layer 2 switch have on a network?

    • an increase in the number of dropped frames
    • an increase in the size of the broadcast domain
    • an increase in the number of network collisions
    • an increase in the size of the collision domain
      Explanation:

      Adding a Layer 2 switch to a network increases the number of collision domains and increases the size of the broadcast domain. Layer 2 switches do not decrease the amount of broadcast traffic, do not increase the amount of network collisions and do not increase the number of dropped frames.

  11. What are the three layers of the switch hierarchical design model? (Choose three.)

    • access
    • data link
    • core
    • network access
    • enterprise
    • distribution
      Explanation:

      The access layer is the lowest layer and it provides network access to users. The distribution layer has many functions, but it aggregates data from the access layer, provides filtering, policy control, and sets Layer 3 routing boundaries. The core layer provides high speed connectivity.

  12. Which cost-effective physical network topology design is recommended when building a three-tier campus network that connects three buildings?​

    • bus
    • mesh
    • extended star
    • dual ring
      Explanation:

      For efficiency, scalability, and cost-effectiveness, building an extended star topology from a centralized site to all other campus sites is recommended. A mesh topology is much more expensive, and bus and dual ring topologies are more difficult to troubleshoot and maintain.

  13. When would a network designer be concerned with RUs?

    • when considering port density
    • when calculating maximum port speed
    • when determining the number of available line cards
    • when purchasing a specific number of switches for a network rack
      Explanation:

      A rack unit or RU is a specific measurement related to the height of the switch. A switch with a 1 RU rating is smaller than a 2 RU switch. Port density measures the number of ports on a switch. Modularity influences the number of available line cards. Port speed measures the number of bits per second that can flow through a given port.

  14. Refer to the exhibit. The PC that is attached to port Fa0/1 is sending a packet that has the destination MAC address of 0050.0fae.299c. Based on the current S1 MAC address table, what will S1 do first when the packet arrives at the switch?

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 02

    RSE CCNA 2 Chapter 4 Quiz Answers 2018 2019 02

    • forward the data to S2
    • broadcast an ARP request to all S1 ports except port Fa0/1
    • add the MAC address of the PC that is attached to Fa0/1 to the MAC address table
    • broadcast the data to all S1 ports and all S2 ports that have attached end devices
    • broadcast the data to all S1 ports that have attached end devices, except the Fa0/1 port
      Explanation:

      The first step a switch does when processing a frame is to see if the source MAC address is in the MAC address table. If the address is not there, the switch adds it. The switch then examines the destination MAC address and compares it to the MAC address table. If the address is in the table, the switch forwards the frame out the corresponding port. If the address is missing from the table, the switch will broadcast the frame to all ports except the port through which the frame arrived.

  15. Which two characteristics describe a converged network? (Choose two.)

    • decreased service calls
    • support of voice and video both using the same switch
    • separate wiring infrastructure for voice and video traffic
    • affordability for small and medium businesses
    • cheaper equipment cost
      Explanation:

      Converged networks have traditional user traffic as well as digitized voice and video traffic that once required separate networks. Now, instead of separate groups managing separate networks, one group of personnel can manage the network.

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