RSE CCNA 2 Chapter 5 Quiz Answers

RSE CCNA 2 Chapter 5 Quiz Answers 2018 2019

  1. What is a possible cause of runt Ethernet frames when a switch is being used?

    • duplex misconfiguration​
    • excessive cable length
    • late collision
    • malfunctioning NIC
      Explanation:

      A runt frame is a frame that is smaller than 64 bytes, the minimum allowed Ethernet frame. This type of frame is usually due to a malfunctioning NIC or excessive collisions. Duplex misconfiguration can cause connectivity issues. Excessive cable length can generate CRC errors and/or late collisions.

  2. What is the result of issuing the no switchport port-security mac-address sticky command on an interface with port security configured?​​

    • The sticky secure MAC addresses are removed from the address table and from the running configuration.
    • The sticky secure MAC addresses remain part of the address table but are removed from the running configuration.
    • The static secure MAC addresses are removed from the address table and from the running configuration.
    • The static secure MAC addresses remain part of the address table but are removed from the running configuration.
      Explanation:

      Sticky learning is disabled by using the no switchport port-security mac-address sticky command. Any sticky secure MAC addresses remain as part of the mac-address table but are removed from the running configuration.

  3. What would be the most common reason that a network technician would see the following Cisco switch prompt after the switch boots?

    switch:

    • The switch is in user EXEC mode.
    • The switch operating system cannot be found.
    • The technician has used Telnet or SSH to gain remote access to the switch.
    • The technician has consoled into the switch and is ready to apply the initial configuration.
      Explanation:

      The prompt of “switch:” is seen when the switch cannot find an operating system and is in the boot loader environment where only a few basic commands can be used to repair the switch to an operational state. When an administrator has used Telnet or SSH to gain access to a switch prompt, the prompt usually asks for a username and password or is in user EXEC mode (switch>, for example).

  4. A network administrator has configured ​VLAN 99 as the management VLAN and has configured it with an IP address and subnet mask. The administrator issues the show interface vlan 99 command and notices that the line protocol is down. Which action can change the state of the line protocol to up?

    • Connect a host to an interface associated with VLAN 99.
    • Configure a default gateway.
    • Remove all access ports from VLAN 99.
    • Configure a transport input method on the vty lines.
      Explanation:

      Once an SVI is configured with an IP address and subnet mask, it can be used for remote management. An SVI interface will be active when the SVI VLAN has an active port associated with it.

  5. Fill in the blank.

    In an Ethernet network, frames smaller than 64 bytes are called .      runts

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

      Giants are Ethernet frames that are larger than the maximum allowed. Runts are Ethernet frames that are smaller than the minimum allowed.

  6. Refer to the exhibit. What can be determined from the partial output of the show running-config command?

    RSE CCNA 2 Chapter 5 Quiz Answers 2018 2019 01

    RSE CCNA 2 Chapter 5 Quiz Answers 2018 2019 01

    • Because the default gateway is not configured, connected hosts will have no connectivity to the Internet.
    • Remote management of the switch can occur on VLAN 1.
    • The switch was unable to find and load the complete IOS.
    • This appears to be the default configuration of the switch.
      Explanation:

      If the switch was unable to find and load the IOS, the prompt would be switch:. A Layer 2 switch does not provide the default gateway for connected hosts. The default gateway is provided by a Layer 3 device. The switch cannot be managed remotely until a management VLAN and a default gateway have been configured.

  7. Here is a link to the PT Activity.

    Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
    Fill in the blank.
    Do not use abbreviations.What is the missing command on S1?      ip address 192.168.99.2 255.255.255.0

    • Noted: In netacad system, you can fill in one of the following: “ip address 192.168.99.2 255.255.255.0” or “ip addr 192.168.99.2 255.255.255.0“, but in our system, you can fill only “ip address 192.168.99.2 255.255.255.0“.
      Explanation:

      The ip address 192.168.99.2 255.255.255.0 command is missing on interface vlan 99, the management VLAN.​

  8. Fill in the blank.
    The initialism refers to a protocol that provides an encrypted connection. The protocol replaces the clear text Telnet protocol for Cisco device management.  ssh

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

      SSH is the initialism for Secure Shell, a secure protocol for remote access.​

  9. What is the bandwidth utilization efficiency of full-duplex Ethernet?

    • 25%
    • 50%
    • 75%
    • 100%
      Explanation:

      Full-duplex communication allows for an effective bandwidth efficiency of 100% by allowing both ends of a connection to transmit and receive data simultaneously without collisions. Ethernet frames that are sent by connected devices on a full-duplex Ethernet segment cannot collide because the devices use two separate circuits in the network cable, one circuit for receiving and one circuit for transmitting.

  10. Which configuration must be in place for the auto-MDIX feature to function on a switch interface?

    • The interface must be in access mode.
    • The interface must be assigned to VLAN 1.
    • The speed and duplex of the interface must be configured for auto detect.
    • The interface must be manually configured for full-duplex mode.
      Explanation:

      The auto-MIDX feature only functions on Cisco devices when the speed and duplex of the connected interfaces are set to auto detect.

  11. An attacker has bypassed physical security and was able to connect a laptop to a Ethernet interface on a switch. If all the switch ports are configured with port security and the violation mode is set to factory-default, which action is taken against the attacker?

    • Packets with unknown source addresses are dropped and there is no notification that a security violation has occurred.
    • Packets with unknown source addresses are dropped and there is a notification that a security violation has occurred.
    • Packets with unknown source addresses are dropped and the interface becomes error-disabled and turns off the port LED.
    • Packets with unknown source addresses are forwarded and there is a notification to the syslog server.​
      Explanation:

      The default violation mode is shutdown. In this mode, a port security violation causes the interface to immediately become error-disabled and turns off the port LED. It also sends an SNMP trap, logs a syslog message, and increments the violation counter.

  12. A network administrator plugs a new PC into a switch port. The LED for that port changes to solid green. What statement best describes the current status of the port?

    • There is a duplex mismatch error.
    • There is a link fault error. This port is unable to forward frames.
    • The port is operational and ready to transmit packets.
    • This port has been disabled by management and is unable to forward frames.
    • The flash memory is busy.
  13. A college offers classes at a nearby naval base where a remote switch is located. In order for network administrators at the college main office to manage a remote switch for SSH traffic, which destination port number should be opened and tracked on the college firewall?

    • 22
    • 23
    • 53
    • 69
  14. Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?

    RSE CCNA 2 Chapter 5 Quiz Answers 2018 2019 02

    RSE CCNA 2 Chapter 5 Quiz Answers 2018 2019 02

    • No collisions will occur on this link.
    • Only one of the devices can transmit at a time.
    • The switch will have priority for transmitting data.
    • The devices will default back to half duplex if excessive collisions occur.
  15. What is the first action in the boot sequence when a switch is powered on?

    • load the default Cisco IOS software
    • load boot loader software
    • low-level CPU initialization
    • load a power-on self-test program
      Explanation:

      The first action to take place when a switch is powered on is the POST or power-on self-test. POST performs tests on the CPU, memory, and flash in preparation for loading the boot loader.