By Sascha Neumeier • Jan 16, 2019

The 5 Most Asked Questions of the Cisco CCNA Exam (Including Answers)

Probably all who work with Cisco switches during their time in IT are familiar with the various certification options offered by Cisco Systems. The best-known certification is the CCNA, the Cisco Certified Network Associate.

To achieve the status of a CCNA, several exams have to be passed. We have taken a closer look at the pool of possible questions, collected and evaluated an incredible amount of statistical data, and today introduce you to the 5 most-asked questions of the CCNA exams. Oh, and we share what the correct answers are. 

1. A network administrator for a small company is contemplating how to scale the network over the next three years to accommodate projected growth. Which three types of information should be used to plan for network growth? (Choose three.)

  • Human resource policies and procedures for all employees in the company
  • Documentation of the current physical and logical topologies *
  • Analysis of the network traffic based on protocols, applications, and services used on the network *
  • History and mission statement of the company
  • Inventory of the devices that are currently used on the network *
  • Listing of the current employees and their role in the company

iExplanation:  Several elements that are needed to scale a network include documentation of the physical and logical topology, a list of devices that are used on the network, and an analysis of the traffic on the network.


2. A network client in a corporate environment reboots. Which type of server would most likely be used first?

  • DNS
  • DHCP *
  • E-mail
  • FTP
  • Telnet
  • Web

3. A network administrator would like to ensure that router R1 is always elected the active router for an HSRP group. Which set of commands would ensure the required results?

  • R1(config-if)# ip address
    R1(config-if)# standby 1 ip
    R1(config-if)# no shutdown
  • R1(config-if)# ip address
    R1(config-if)# standby 1 ip
    R1(config-if)# standby 1 priority 255
    R1(config-if)# standby 1 preempt
    R1(config-if)# no shutdown *
  • R1(config-if)# ip address
    R1(config-if)# standby 1 ip
    R1(config-if)# standby 1 priority 1
    R1(config-if)# no shutdown
  • R1(config-if)# ip address
    R1(config-if)# standby 1 ip
    R1(config-if)# standby 1 priority 150
    R1(config-if)# no shutdown

iExplanation:  In order to configure HSRP, the standby command is used. The IP address given with the standby command is the virtual IP address used by hosts as a default gateway. A priority number of 255 is the highest that can be assigned and should be configured on the router that is to be the active router.


4. A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?

  • The ARP cache is cleared. *
  • The current content of the ARP cache is displayed.
  • The detailed information of the ARP cache is displayed.
  • The ARP cache is synchronized with the router interface.

iExplanation:  Issuing the arp –d * command on a PC will clear the ARP cache content. This is helpful when a network technician wants to ensure the cache is populated with updated information.


5. What is the purpose of the Distributed Coordination Function in an IEEE 802.11 WLAN environment?

  • It allows a client to detect whether or not a channel is clear prior to transmission. *
  • It is used in a full-duplex environment to detect collisions.
  • It is used to send data over a half-duplex connection.
  • It allows the client to change transmission channels.

If you participate in a CCNA exam, there is a good chance that you will encounter one or more of the above questions - and now you already know the correct answers.

If you plan to monitor your Cisco system environment with PRTG Network Monitor, try the blog series linked below. There we described in detail which Cisco sensors are available to you and how you can use them most effectively.

Have you already passed your CCNA exam? Do you have any helpful tips for those who still have their exams ahead of them? Share your experiences with us in the comments.