N10-008 Online Practice Questions and Answers

Correct Answer: B

DMZ - a permiter network that protects an organisations internal local area network from untrusted traffic. Typically this is a subnet where you will place all your public facing servers eg: email server, web server and file server.

Correct Answer: C

Correct Answer: A

TCP (Transmission Control Protocol) is a connection-oriented protocol, which means that a connection needs to be established between the client and the server before data can be exchanged. During the connection establishment process, the client sends a SYN (Synchronize) packet to the server, and the server responds with a SYN-ACK (Synchronize-Acknowledge) packet. If the client is trying to connect to the wrong TCP port, the server will not respond with a SYN-ACK packet, and instead, it will send a RST packet to terminate the connection attempt.

Correct Answer: D

In this scenario, the salespeople are assigned desktops that are wired to the network. The fact that the salespeople can access corporate materials on the network suggests that their desktops are able to communicate with the network. However, they cannot access sales-specific resources, which could be an indication that they have been assigned to the wrong VLAN.

VLANs are used to segment a network into smaller logical pieces, which helps to improve security and network performance. VLANs are often used to group devices by function, department, or location. When a new group of users, such as the salespeople in this scenario, is added to a network, they need to be assigned to the appropriate VLAN to access resources that are specific to their role.

If the recently added users were assigned to the wrong VLAN, they would not be able to access resources that are specific to their role. In this case, it is likely that the desktops were configured to use the wrong VLAN, which is preventing the salespeople from accessing sales-specific resources.

Correct Answer: C

Satellite internet is a reliable alternative when cable and DSL services are unavailable in remote areas. With satellite internet, the user can connect to the internet via a satellite signal and a satellite dish. This is often the most cost-effective and practical option for remote areas where other types of internet services are not feasible due to distance or lack of infrastructure.

Correct Answer: B

The technician is just starting to look at the problem, so he is beginning to gather information to determine what the root CAUSE is. This would be step #1 Identify the Problem. "gathering information" (in this case, can certain devices be pinged on the network) is a part of step one.

https://www.comptia.org/blog/troubleshooting-methodology

Correct Answer: C

TCP is the protocol type that describes secure communication on port 443. TCP (Transmission Control Protocol) is a connection-oriented protocol that provides reliable and ordered delivery of data packets over an IP network. TCP uses port numbers to identify different applications or services on a device. Port 443 is the default port for HTTPS (Hypertext Transfer Protocol Secure), which is an extension of HTTP that uses SSL (Secure Sockets Layer) or TLS (Transport Layer Security) encryption to protect data in transit between a web server and a web browser.

References: https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13788-3.html

Correct Answer: C

A layer 2 switch is a device that forwards traffic based on MAC addresses within a single network segment or VLAN. A layer 2 switch is best suited for use at the access layer in a three-tier architecture system. The access layer is the layer that connects end devices such as computers, printers, and phones to the network. A layer 2 switch can provide fast and efficient switching for end devices without adding complexity or overhead to the network.

References: https://www.comptia.org/training/books/network-n10-008-study-guide (page 139)

Correct Answer: B

Use Traceroute or MTR: Traceroute (Windows) or MTR (Linux/macOS) can provide more detailed information about the network path between your computer and the web server. This can help identify where the connection is failing.

Correct Answer: D

SNMP (Simple Network Management Protocol) is a protocol that allows network devices to communicate with a management server. By using SNMP, the company can set up an SNMP agent on each sensor, which will report its temperature readings to an existing collector server. This will enable the company to monitor the temperatures of all their sensors in real-time without the need for manual checks. Additionally, SNMP's scalability means that even if the company adds more rooms or sensors, the existing system can be easily expanded to accommodate them.

Correct Answer: A

Nmap (Network Mapper) is a free and open source command line tool that can be used to scan a network for all connected hosts, detect the types of operating systems running on all devices, discover all services offered by hosts on the network, find open ports, and detect security risks. Nmap is commonly used by system administrators and security professionals to audit a network's security and identify possible vulnerabilities. Nmap can be used to discover active hosts, scan ports, fingerprint operating systems, detect running services, and more. Reference: CompTIA Network+ Study Manual, 8th Edition, page 592.

Correct Answer: D

References

1: Understand cloud concepts | Microsoft Press Store

2: What Is Hybrid Cloud? - Cisco

3: Difference between Elasticity and Scalability in Cloud Computing

4: Scalability and Elasticity in Cloud Computing - GeeksforGeeks

Correct Answer: A

The Presentation layer of the OSI model is primarily responsible for formatting, encrypting, and compressing data in a way that the Application layer can understand. Encryption, as a part of data formatting, is often implemented in this layer to ensure end-to-end secure communication between applications.

While encryption can also be implemented at other layers of the OSI model, such as the Application layer (for application-specific encryption) and the Transport layer (for transport-level encryption such as SSL/TLS), the Presentation layer specifically deals with the syntax and semantics of the data to be exchanged and is where data encryption/decryption often takes place, allowing for secure communication between applications.

Correct Answer: D

Correct Answer: C