Practice for the CCNA exam with 23 exam-style practice questions, instant answer reveals, and concise explanations of every correct answer. Topics include: An implementer is preparing hardware for virtualization to create virtual machines on a host. What is needed to provide . Follow @CertPunch and visit certpunch.com for more certification practice exams and study content.
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What you will practice
- An implementer is preparing hardware for virtualization to create virtual machines on a host. What is needed…
- What is a characteristic of an SSID in wireless networks?
- What is a function of a remote access VPN?
- What is a characteristic of encryption in wireless networks?
- Which element of a virtualization solution manages virtualized services and enables connections between virtu…
- Which WAN topology provides a combination of simplicity, quality, and availability?
Answers and explanations
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Q1. An implementer is preparing hardware for virtualization to create virtual machines on a host. What is needed to provide communication between hardware and virtual machines?
Answer: B. hypervisor
A hypervisor is the software layer that virtualizes physical hardware resources, enabling virtual machines to run on a host. Routers, switches, and cables are physical components that do not provide this specific hardware abstraction layer.
Q2. What is a characteristic of an SSID in wireless networks?
Answer: D. associates a name to a WLAN
A Service Set Identifier logically associates a name to a wireless LAN so client devices can identify and select the correct network. It does not inherently enforce security policies, prompt for login credentials, or require specific character combinations.
Q3. What is a function of a remote access VPN?
Answer: D. allows the users to access company internal network resources through a secure tunnel
A remote access VPN allows individual users to securely access company internal network resources through an encrypted tunnel. A site to site VPN connects branch offices, while remote access is designed for individual client devices connecting externally.
Q4. What is a characteristic of encryption in wireless networks?
Answer: D. prevents the interception of data as it transits a network
Encryption in wireless networks protects transmitted data by encoding it, which prevents the interception of readable data as it transits a network. It does not prevent spyware on local devices or actively detect zero day network attacks.
Q5. Which element of a virtualization solution manages virtualized services and enables connections between virtualized services and external interfaces?
Answer: B. network functionality
Network functionality manages communication between virtualized services and physical network interfaces using virtual switches. Hardware provides the physical compute resources, while the virtual machine is the isolated guest environment itself.
Q6. Which WAN topology provides a combination of simplicity, quality, and availability?
Answer: A. partial mesh
A partial mesh topology provides a practical balance of simplicity, cost, and availability. It offers redundancy for critical sites without the high expense and complexity of a full mesh network.
Q7. What is a DHCP client?
Answer: B. a host that is configured to request an IP address automatically
A Dynamic Host Configuration Protocol client is any host configured to request an IP address automatically. The server allocates the addresses, but the client initiates the request.
Q8. Which type of wired port is required when an AP offers one unique SSID, passes client data and management traffic, and is in autonomous mode?
Answer: C. access
When an autonomous access point uses a single Service Set Identifier, all client and management traffic shares one VLAN. Therefore, an access port is required because it does not use 802.1Q tagging.
Q9. Which condition must be met before an NMS handles an SNMP trap from an agent?
Answer: C. C. The NMS software must be loaded with the MIB associated with the trap.
A Network Management System must load the appropriate Management Information Base to properly interpret and handle incoming traps. Without the correct file, the system cannot translate the numeric data into readable text.
Q10. Which port type supports the spanning-tree portfast command without additional configuration?
Answer: D. access ports
PortFast is designed specifically for Layer 2 access ports connected to end devices. It can be enabled directly on these ports to bypass spanning-tree states, unlike trunk or routed ports.
Q11. What is a characteristic of private IPv4 addressing?
Answer: A. is used without allocation from a regional internet authority
Private IPv4 addresses do not require allocation from a Regional Internet Registry. They can be used internally by any organization. They do not provide unlimited ranges or automatically reduce router forwarding tables.
Q12. What is the function of a server?
Answer: B. It provides shared applications to end users.
A server provides shared applications, services, or data to end users or client devices. Routers, not servers, route traffic between Layer 3 devices or separate security zones.
Q13. How does frame switching function on a switch?
Answer: A. floods unknown destinations to all ports except the receiving port
When a switch receives a frame with an unknown destination MAC, it floods unknown destinations to all ports except the receiving port. Switches do not rewrite MAC addresses or forward frames with CRC errors.
Q14. Which mode allows access points to be managed by Cisco Wireless LAN Controllers?
Answer: B. lightweight
Lightweight mode enables an access point to be centrally managed by a Cisco Wireless LAN Controller using the CAPWAP protocol. Autonomous and bridge modes operate independently, which eliminates them as options for centralized controller-based management.
Q15. What is a function of store-and forward switching?
Answer: B. It produces an effective level of error-free network traffic using CRCs.
Store-and-forward switching receives the full frame and verifies the frame check sequence using cyclic redundancy checks. Cut-through forwarding eliminates this error checking to reduce latency, which confirms the correct benefit of error-free traffic.
Q16. Which alternative to password authentication is implemented to allow enterprise devices to log in to the corporate network?
Answer: D. digital certificates
Digital certificates provide certificate-based authentication, allowing enterprise devices to authenticate securely to the network without traditional passwords. This method is commonly implemented in enterprise environments for device authentication using 802.1X.
Q17. What is a benefit for external users who consume public cloud resources?
Answer: C. Accessed over the Internet
Public cloud resources are accessed over the Internet, allowing external users to consume services from virtually any location without dedicated infrastructure. Dedicated WAN connections and physical servers describe private or on-premises deployments instead.
Q18. What is a reason to configure a trunk port that connects to a WLC distribution port?
Answer: B. Allow multiple VLANs to be used in the data path.
A trunk port allows multiple VLANs to traverse a single physical link using IEEE 802.1Q tagging. This configuration is required for the data path so traffic from multiple WLANs mapped to different VLANs can cross the switch connection.
Q19. What is a characteristic of private IPv4 addressing?
Answer: D. is used on hosts that communicate only with other internal hosts
Private IPv4 addresses are not routable on the public Internet and are intended for internal network use. They are assigned to hosts that communicate within the organization or access external resources through network address translation.
Q20. How does a network administrator securely manage an AP in lightweight mode?
Answer: D. using the WLC GUI via HTTPS
Lightweight access points are centrally managed through the Wireless LAN Controller. Secure management is performed by accessing the controller GUI using HTTPS, which then pushes configurations to the access points via secure CAPWAP tunnels.
Q21. Which action is taken by the data plane within a network device?
Answer: C. Looks up an egress interface in the forwarding information base.
The data plane is responsible for moving packets and relies on the forwarding information base to determine the proper egress interface. While forwarding traffic to the next hop is the ultimate result, the exact lookup action specifically defines the hardware plane.
Q22. Which function forwards frames to ports that have a matching destination MAC address?
Answer: D. frame forwarding
Frame forwarding is the switching function that sends traffic out the specific port associated with a known destination MAC address. Flooding occurs when the destination MAC address is unknown, sending traffic out all ports.
Q23. Which mechanism carries multicast traffic between remote sites and supports encryption?
Answer: D. GRE over IPsec
Generic Routing Encapsulation over IPsec allows multicast traffic to traverse remote sites while supporting encryption. Standard IPsec alone cannot natively encapsulate multicast broadcasts, so generic routing encapsulation is combined with it for secure transport.
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