Question # 1
Which of the following should be configured so users can authenticate to a wireless network using company credentials? | A. SSO | B. SAML | C. MFA | D. RADIUS |
D. RADIUS
Question # 2
A network administrator needs to set up a multicast network for audio and video broadcasting. Which of the following networks would be the most appropriate for this application? | A. 172.16.0.0/24 | B. 192.168.0.0/24 | C. 224.0.0.0/24 | D. 240.0.0.0/24 |
C. 224.0.0.0/24
Explanation:
Understanding Multicast:
Multicast IP Address Range: The multicast address range is from 224.0.0.0 to 239.255.255.255, designated for multicast traffic.
Multicast Applications:
Use Case: Multicast is used for one-to-many or many-to-many communication, suitable for applications like audio and video broadcasting where the same data is sent to multiple recipients simultaneously.
Appropriate Network Selection:
224.0.0.0/24 Network: This range is reserved for multicast addresses, making it the appropriate choice for setting up a multicast network.
Comparison with Other Options:
172.16.0.0/24: Part of the private IP address space, used for private networks, not designated for multicast.
192.168.0.0/24: Another private IP address range, also not for multicast.
240.0.0.0/24: Reserved for future use, not suitable for multicast.
References:
CompTIA Network+ study materials on IP address ranges and multicast.
Question # 3
Which of the following can support a jumbo frame? | A. Access point | B. Bridge | C. Hub | D. Switch |
D. Switch
Explanation:
Definition of Jumbo Frames:
Jumbo frames are Ethernet frames with more than 1500 bytes of payload, typically up to 9000 bytes. They are used to improve network performance by reducing the overhead caused by smaller frames.
Why Switches Support Jumbo Frames:
Switches are network devices designed to manage data packets and can be configured to support jumbo frames. This capability enhances throughput and efficiency, particularly in high-performance networks and data centers.
Incompatibility of Other Devices:
Access Point: Primarily handles wireless communications and does not typically support jumbo frames.
Bridge: Connects different network segments but usually operates at standard Ethernet frame sizes.
Hub: A simple network device that transmits packets to all ports without distinguishing between devices, incapable of handling jumbo frames.
Practical Application:
Enabling jumbo frames on switches helps in environments where large data transfers are common, such as in storage area networks (SANs) or large-scale virtualized environments.
References:
CompTIA Network+ course materials and networking hardware documentation.
Question # 4
A newtwork administrator needs to create an SVI on a Layer 3-capable device to separate voice and data traffic. Which of the following best explains this use case?
| A. A physical interface used for trunking logical ports
| B. A physical interface used for management access
| C. A logical interface used for the routing of VLANs
| D. A logical interface used when the number of physical ports is insufficent.
|
C. A logical interface used for the routing of VLANs
Explanation:
An SVI (Switched Virtual Interface) is a logical interface on a Layer 3-capable switch used to route traffic between VLANs. This is particularly useful in environments where voice and data traffic need to be separated, as each type of traffic can be assigned to different VLANs and routed accordingly.
SVI (Switched Virtual Interface): A virtual interface created on a switch for inter-VLAN routing.
VLAN Routing: Enables the routing of traffic between VLANs on a Layer 3 switch, allowing for logical separation of different types of traffic, such as voice and data.
Use Case: Commonly used in scenarios where efficient and segmented traffic management is required, such as in VoIP implementations.
Network References:
CompTIA Network+ N10-007 Official Certification Guide: Discusses VLANs, SVIs, and their applications in network segmentation and routing.
Cisco Networking Academy: Provides training on VLAN configuration and inter-VLAN routing using SVIs.
Network+ Certification All-in-One Exam Guide: Covers network segmentation techniques, including the use of SVIs for VLAN routing.
Question # 5
A user connects to a corporate VPN via a web browser and is able to use TLS to access the internal financial system to input a time card. Which of the following best describes how the VPN is being used? | A. Clientless | B. Client-to-site | C. Full tunnel | D. Site-to-site |
A. Clientless
Explanation:
[Reference: CompTIA Network+ Certification Exam Objectives - Remote Access Methods section., ]
Question # 6
A network administrator performed upgrades on a server and installed a new NIC to improve performance. Following the upgrades, usera are unable to reach the server. Which of the following is the most likely reason. | A. The PoE power budget was exceeded. | B. TX/RX was transposed. | C. A port security violation occured. | D. An incorrect cable type was installed. |
D. An incorrect cable type was installed.
Explanation:
When a network administrator installs a new Network Interface Card (NIC) and users are unable to reach the server, one of the common issues is the use of an incorrect cable type. Network cables must match the specifications required by the NIC and the network infrastructure (e.g., Cat5e, Cat6 for Ethernet).
NIC Compatibility: The new NIC might require a specific type of cable to function properly. Using a cable not rated for the NIC's required speeds or capabilities can result in connectivity issues.
Cable Standards: Different NICs and network devices might need different cabling standards (straight-through vs. crossover cables, or specific fiber optic types).
Connection Types: Ensuring that the cable connectors are appropriate for the NIC ports (e.g., RJ45 for Ethernet, LC connectors for fiber optics).
Network References:
CompTIA Network+ N10-007 Official Certification Guide: Discusses network cabling standards and NIC specifications.
Cisco Networking Academy: Provides insights into cabling and NIC configurations for optimal network performance.
Network+ Certification All-in-One Exam Guide: Offers comprehensive details on troubleshooting network connectivity issues, including cabling problems.
Question # 7
Which of the following fiber connector types is the most likely to be used on a network interface card? | A. LC | B. SC | C. ST | D. MPO |
A. LC
Explanation:
Definition of Fiber Connector Types:
LC (Lucent Connector): A small form-factor fiber optic connector with a push-pull latching mechanism, commonly used for high-density applications.
SC (Subscriber Connector or Standard Connector): A larger form-factor connector with a push-pull latching mechanism, often used in datacom and telecom applications.
ST (Straight Tip): A bayonet-style connector, typically used in multimode fiber optic networks.
MPO (Multi-fiber Push On): A connector designed to support multiple fibers (typically 12 or 24 fibers), used in high-density cabling environments.
Common Usage:
LC Connectors: Due to their small size, LC connectors are widely used in network interface cards (NICs) and high-density environments such as data centers. They allow for more connections in a smaller space compared to SC and ST connectors.
SC and ST Connectors: These are larger and more commonly used in patch panels and older fiber installations but are less suitable for high-density applications.
MPO Connectors: Primarily used for trunk cables in data centers and high-density applications but not typically on individual network interface cards.
Selection Criteria:
The small form-factor and high-density capabilities of LC connectors make them the preferred choice for network interface cards, where space and connection density are critical considerations.
References:
CompTIA Network+ study materials on fiber optics and connector types.
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