Comptia Network+ Exam Questions

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If you are looking for CompTIA Network Practice test questions, this article gives you an overview of the actual certification exam through free questions and answers. These CompTIA Network+ questions and answers have detailed explanations which solve your doubts about the exam objectives clearly.

Option A is incorrect. In a ring topology, each node has a maximum of two connections.

Option B is incorrect. In a star topology, each node is connected with a central point, which is a hub or switch. Therefore, each node has only one connection.

Option C is incorrect. Each node is connected to a running cable in a bus topology, which means that each node has only one connection.

Option D is correct. If the DHCP server is unavailable or unable to lease IP addresses to a client, the client uses the APIPA IP address by default.

The Application layer of the OSI model provides a user interface to an application. This layer enables the applications being used by the users to communicate with the other entities. The applications interact with the Application layer when they need to communicate with other entities on the network.

Option A is correct. It is the Application layer used for interaction by the applications to interact with other entities on the network.

Option B is incorrect. The Presentation layer is responsible for presenting and processing data. Encryption is applied at this layer.

Option C is incorrect. The Transport layer is responsible for ensuring the delivery of the data packets.

Option D is incorrect. The Session layer is responsible for keeping the data from applications separate.

The SaaS cloud delivery model is used for deploying applications. Access is granted to the users via a subscription model. Microsoft Office 365, when accessed via a Web browser, is an example of SaaS.

Option A is incorrect. A Layer 2 switch does not have the routing capability. It has a single broadcast domain and can route packets within that domain only.

Option B is correct. A Layer 3 switch has the routing capability and uses multi-broadcast domains. It can route packets between different network subnets. It operates on the Network layer of the OSI model.

Option C is incorrect. A hub is a Layer 1 device and connects several network devices in a star topology.

Option D is incorrect. A bridge is a device that connects two similar networks. Each network represents a broadcast domain. A bridge keeps the broadcast traffic restricted within the network from one network and does not pass it on to the joined network.

Option A is incorrect. When you set the network adapter with Auto-Configuration mode, it will match the speed of the switch. However, the switch can work at 10 Gbps. The system should also, but due to the speed limitation of the cable, it cannot.

Option B is incorrect. You do not need to set the switch to Auto Configuration mode. It is set to work with the highest speed unless limited by the cable or the connected system by default.

Option C is correct. A CAT 6 cable can work with a maximum of 1 Gbps speed. Even if the connected device can work at 10 Gbps, it will bring down the speed to 1 Gbps. The solution is to change the cable to CAT 6a, which can work at 10 Gbps speed.

Option D is incorrect. If the duplex mode were not enabled on the network adapter, the system would not operate at 1 Gbps speed.

Option A is correct. Refraction is caused by different atmospheric changes, like changes in temperature or vapor in the air. It can cause the loss of radio frequency signals of a wireless network.

Option B is incorrect. Reflection is when radio waves bounce off an obstacle, such as a metal. The bounced-off signals may interfere with the signals coming from the wireless router.

Option C is incorrect. Attenuation is the gradual loss of the wireless signals. It is the key element that limits the range of wireless signals.

Option D is incorrect. Latency is the time one or more packets take to reach from the source to the destination system. Latency is critical for time-sensitive applications like voice and video.

Option A is incorrect. Refraction is caused by different atmospheric changes, like changes in temperature or vapor in the air. It can cause the loss of radio frequency signals of a wireless network.

Option B is incorrect. Reflection is when radio waves bounce off an obstacle, such as a metal. The bounced-off signals may interfere with the signals coming from the wireless router.

Option C is correct. Attenuation is the gradual loss of the wireless signals. It is the key element that limits the range of wireless signals. The closer you are to the wireless router or the access point, the stronger the signal and the less attenuation. However, as you move away from the wireless router or access point, the attenuation increases.

Option D is incorrect. Latency is the time one or more packets take to reach from the source to the destination system. Latency is critical for time-sensitive applications like voice and video.

Option A is correct. Each network device maintains an arp cache that maintains the mapping of an IP address of the device to its hardware or MAC address.

Option B is incorrect. The netstat command displays the protocol name, local IP address, and connection status with the remote system. For example, Established and Time_Wait are two different statuses that might be visible. One connection can have only one status.

Option C is incorrect. The nslookup command is used for troubleshooting DNS problems. You can verify the DNS servers for a particular host with this command.

Option D is incorrect. The pathping command is a combination of ping and tracert commands. It displays the path along with the ping statistics.

Changes can bring good or bad outcomes depending on what they are and how they are implemented. To control the ad hoc changes being implemented, a Change Management Plan is developed and adopted by an organization. It is used to authorize a change.

Option A is incorrect. A Business Continuity Plan is a capability that an organization develops to ensure that it can continue to function in a disaster. It is a document that needs to be ready before a disaster strikes.

Option B is incorrect. Disaster Recovery Plans are used to minimize the impact of a disaster. They need to be developed before the disaster strikes. It focuses on recovering the IT operations.

Option C is incorrect. An Incident Response Plan is used to define the procedures for handling a type of incident. The Incident Response Plan can include various types of incidents and the procedures to handle them.

Option D is correct. A Change Management Plan is a process of how changes are implemented in a network environment. Any change that needs to be implemented needs to be tested, approved, implemented, and documented.

Option A is incorrect. A Business Continuity Plan is a capability that an organization develops to ensure that it can continue to function in a disaster. It is a document that needs to be ready before a disaster strikes.

Option B is correct. Disaster Recovery Plans are used to minimize the impact of a disaster. They need to be developed before the disaster strikes. It focuses on recovering the IT operations.

Option C is incorrect. An Incident Response Plan is used to define the procedures for handling a type of incident. The Incident Response Plan can include various types of incidents and the procedures to handle them.

Option D is incorrect. A Change Management Plan is a process of how changes are implemented in a network environment. Any change that needs to be implemented needs to be tested, approved, implemented, and documented.

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