CCNA Practice Test Questions and Answers 2025: Networking Fundamentals, Exams of Computer Science

A valuable set of practice questions and answers for the ccna exam, covering key networking concepts. it's ideal for students preparing for the ccna certification, reinforcing understanding of topics such as routing protocols, network security, and ip addressing. The questions test knowledge of various networking technologies and protocols, making it a useful study resource for students and professionals alike.

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2024/2025

Available from 05/09/2025

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CCNA Practice Test Questions 1 and
Answers latest 2025
From a network perspective, how is a server a different endpoint than a user
workstation?
โœ” A server requires more bandwidth.
Which two characteristics apply to small office/home office (SOHO) routers?
โœ” They have a web-based administration interface and they have integrated security
functionality.
What is the purpose of the metric parameter of a route?
โœ” It binds a numeric value to the path to a network.
Where should a firewall be located to protect a network from the public Internet?
โœ” Between the Internet and the edge router.
What are two reasons for choosing Transport Layer Security over IP Security
encryption?
โœ” IPsec requires dedicated software installed on host, and TLS can be used for
encrypting traffic to public websites. IPsec can encrypt the entire I P packet, while TLS
encrypts only the application level data, which makes IPsec a more flexible choice for a
broader range of applications.
How do you view the DHCP assigned IP address lease time on a Cisco device?
โœ” With the command show I P DHCP binding.
What 3 characteristics differentiate Ansible from other automation tools?
โœ” It is agentless, it is written in Python, and it uses YAML definitions.
What task makes configuring network devices more efficient and reduces errors?
โœ” Device provisioning configures network devices more efficiently, faster, and with
fewer errors because human interaction with each network device is decreased.
Give two implementation characteristics of MPLS VPN.
โœ” 1) The service provider network can be represented as a router from the customer
perspective. 2) The service provide can implement MPLS L3VPN.
You have set up a SOHO to work from home and are using broadband internet with a
remote-access VPN to connect to your company resources. How can you establish a
VPN tunnel?
โœ” You can use a web browser to establish a VPN tunnel. Remote-access VPN allows
you to establish VPNs using VPN-client software or a web-based client. Remote-access
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CCNA Practice Test Questions 1 and

Answers latest 2025

From a network perspective, how is a server a different endpoint than a user workstation? โœ” A server requires more bandwidth. Which two characteristics apply to small office/home office (SOHO) routers? โœ” They have a web-based administration interface and they have integrated security functionality. What is the purpose of the metric parameter of a route? โœ” It binds a numeric value to the path to a network. Where should a firewall be located to protect a network from the public Internet? โœ” Between the Internet and the edge router. What are two reasons for choosing Transport Layer Security over IP Security encryption? โœ” IPsec requires dedicated software installed on host, and TLS can be used for encrypting traffic to public websites. IPsec can encrypt the entire I P packet, while TLS encrypts only the application level data, which makes IPsec a more flexible choice for a broader range of applications. How do you view the DHCP assigned IP address lease time on a Cisco device? โœ” With the command show I P DHCP binding. What 3 characteristics differentiate Ansible from other automation tools? โœ” It is agentless, it is written in Python, and it uses YAML definitions. What task makes configuring network devices more efficient and reduces errors? โœ” Device provisioning configures network devices more efficiently, faster, and with fewer errors because human interaction with each network device is decreased. Give two implementation characteristics of MPLS VPN. โœ” 1) The service provider network can be represented as a router from the customer perspective. 2) The service provide can implement MPLS L3VPN. You have set up a SOHO to work from home and are using broadband internet with a remote-access VPN to connect to your company resources. How can you establish a VPN tunnel? โœ” You can use a web browser to establish a VPN tunnel. Remote-access VPN allows you to establish VPNs using VPN-client software or a web-based client. Remote-access

VPNs are not statically set up. Site-to-site VPNs require VPN-capable devices to connect to the VPN gateway on the company's side. Which two types of cables can be used to connect to the console port of a Cisco router? โœ” Rollover or USB. Which type of cable is typically used to connect a core switch with a data center switch, where bandwidth higher than 40 Gbps and low cost are required? โœ” Multimode fiber. In which situation would you choose to use UDP instead of TCP for IP applications? โœ” When speed of delivery is more important than error correction in IP packet transmissions. What three fields are included in a TCP header? โœ” Destination port, Flags, and Window size. What happens when an IPv6 address autoconfigures itself? โœ” The 7th bit of the I P address is flipped. Which type of address is automatically assigned to a physical interface when IPv6 is enabled on that interface? โœ” A link-local address. Give 3 characteristics that apply to the 802.1Q protocol. โœ” 1) It carries untagged frames. 2) It modifies the 802.3 frame header. 3) It uses an internal tagging mechanism. What happens if a port that is assigned to a VLAN is shut down? โœ” If a port or the VLAN assigned to it are shut down, no traffic can flow through. Which component is used to generate a signal for single-mode fiber connections? โœ” A laser transmitter. Can acccess points have more than one SSID? โœ” An administrator can create several SSID's on the same access point. Which cloud service model offers customers the most control over their cloud-hosted services? โœ” Infrastructure as a service, or IaaS. What are 2 examples of full hypervisors?

โœ” By providing individualized login to specific network devices. ACL's are not controlled by RADIUS servers, RADIUS does not prevent brute-force attacks, and encryption strength is not related to RADIUS server presence or absence. When using a AAA server along with an access switch, which two features benefit from centralized authentication? โœ” Management access & network access. By having a switch communicating to an authentication server, it is possible to authenticate a user's network access using 802.1X or to authenticate administrative management sessions, such as SSH or HTTPS remote sessions. When an access port is enabled with the PortFast feature, which two STP states are bypassed? โœ” Learning and listening. What is the purpose of the blocking state of ports in STP? โœ” To prevent path loops. When deciding how many static routes are needed in any given configuration, what data must be considered? โœ” The static routes that are already in place for the devices that will be included in that scenario. How can you determine which ports on Cisco devices are being used so that they can communicate with each other? โœ” Use the show CDP neighbors detail command to see all directly related ports that lead to neighbor devices. What three SNMP messages are sent from an SNMP agent to an SNMP manager? โœ” InformRequest, Response, and Trap. On a Cisco device, what is the default destination for syslog logging messages? โœ” The console line. Syslog message logging to the console terminal is enabled by default. Syslog messages can be sent to destinations other than the consoleโ€”such as the logging buffer, syslog servers, and terminal lines other than the console. A client issues a DNS request to its local DNS server. The local DNS server does not have the information required. Which entity will send a DNS response to the client? โœ” The client's local DNS server. Which command would you use to verify the number of excluded addresses on a router configured as a DHCP server? โœ” show I P DHCP pool.

Routers communicate First Hop Redundancy Protocol (FHRP) information between each other through hello messages. What is this mechanism called? โœ” Keepalive. Two routers, A and B, are part of the Hot Standby Router Protocol (HSRP) standby group. There was no priority configured on the routers for the HSRP group. What is the state of those routers? โœ” Router A will be in the ACTIVE state and router B will be in the STANDBY state. In normal operations, one router is always active and the other on standby, waiting to take over if the active router fails. When determining the OSPF router ID, what is the last action that the router will perform? โœ” Choose the highest IPv4 address on an active interface. If the OSPF router I D is not configured, the router will use the highest IPv4 address on a loopback interface for the router ID. When neither the manual nor loopback router I D is determined, the router will use the highest IPv4 address of an active interface. What command would you use to configure a router ID on a Cisco router? โœ” R1 config-router#, router-id ip-address. Give 2 statements that describe examples of social engineering attacks. โœ” 1) Sending an email from a seemingly legitimate address with writing that adopts typical sender language. 2) Sending an infected USB with a magazine. What is the best way of mitigating social engineering attacks? โœ” Training users about correct security behaviors. What happens when a router first boots up? โœ” It looks for its startup configuration in NVRAM. If the startup configuration file does not exist in NVRAM, the router searches for a TFTP server. If the router detects that it has an active link, it sends a broadcast searching for a configuration file across the active link. No specific TFTP URL is used. After the Cisco IOS Software image is loaded and started, from which three components can the device load its configuration? โœ” NVRAM, SCP server, or a TFTP server. What command is used to assign IPv6 addresses to devices? โœ” IPv6 address autoconfig default. The IPv6 address auto-config command enables autoconfiguration for IPv6 address assignment only, but the default route is not injected into the routing table. How are IPv6 addresses similar to IPv4 addresses? โœ” Devices that need to communicate with each other need to be in the same subnet.