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Question 1:
An organization wants to implement a method of centrally managing logins to network services. Which of the following protocols should the organization use to allow for authentication, authorization and auditing?
A. MS-CHAP
B. RADIUS
C. LDAPS
D. RSTP
Correct Answer: B
RADIUS (Remote Authentication Dial-In User Service) is a protocol that should be used by the organization to allow for authentication, authorization, and auditing of network services. RADIUS is an AAA (Authentication, Authorization, and Accounting) protocol that manages network access by verifying user credentials, granting access permissions, and logging user activities. RADIUS uses a client-server model where a RADIUS client (such as a router, switch, or VPN server) sends user information to a RADIUS server (such as an authentication server) for verification and authorization. The RADIUS server can also send accounting information to another server for billing or reporting purposes.
References: https://www.cisco.com/c/en/us/support/docs/security-vpn/remote-authentication-dial-user-service-radius/13838-10.html
Question 2:
The following configuration is applied to a DHCP server connected to a VPN concentrator:
There are 300 non-concurrent sales representatives who log in for one hour a day to upload reports, and 252 of these representatives are able to connect to the VPN without any Issues. The remaining sales representatives cannot connect to the VPN over the course of the day.
Which of the following can be done to resolve the issue without utilizing additional resources?
A. Decrease the lease duration
B. Reboot the DHCP server
C. Install a new VPN concentrator
D. Configure a new router
Correct Answer: A
Decrease the lease duration – They\’re exhausting all of the available IP addresses in the DHCP scope for VPN clients. Excluding the network address (10.0.0.0), DHCP server (10.0.0.1) and gateway IP (10.0.0.254), the DHCP scope that the server can give out would range from 10.0.0.2 to 10.0.0.253. This would be 252 usable addresses, which the number of representatives that were able to connect. This isn\’t enough for all 300 sales representatives, so decreasing the lease duration would make sense here since they only login for an hour a day to upload reports.
Question 3:
A network is secured and is only accessible via TLS and IPSec VPNs. Which of the following would need to be present to allow a user to access network resources on a laptop without logging in to the VPN application?
A. Site-to-site
B. Secure Shell
C. In-band management
D. Remote desktop connection
Correct Answer: A
A site-to-site VPN is a type of VPN that connects two or more networks over the Internet using a secure tunnel. A site-to-site VPN allows users to access network resources on a laptop without logging in to the VPN application, as long as the laptop is connected to one of the networks in the VPN. A site-to-site VPN is transparent to the users and does not require any additional software or configuration on the client devices. References: Network+ Study Guide Objective 3.4: Explain the purposes and use cases for VPNs.
Question 4:
A network technician is reviewing an upcoming project\’s requirements to implement laaS. Which of the following should the technician consider?
A. Software installation processes
B. Type of database to be installed
C. Operating system maintenance
D. Server hardware requirements
Correct Answer: D
IaaS stands for Infrastructure as a Service, which is a cloud computing model that provides virtualized computing resources such as servers, storage, and networking over the Internet. When implementing IaaS, the network technician should consider the server hardware requirements, such as CPU, RAM, disk space, and network bandwidth, that are needed to run the applications and services on the cloud. The other options are not relevant to IaaS, as they are either handled by the cloud provider or by the end-user.
References: https://www.comptia.org/blog/what-is-iaas
Question 5:
An IT technician needs to increase bandwidth to a server. The server has multiple gigabit ports. Which of the following can be used to accomplish this without replacing hardware?
A. STP
B. 802.1Q
C. Duplex
D. LACP
Correct Answer: D
LACP stands for Link Aggregation Control Protocol and is a protocol that allows multiple physical ports to be combined into a single logical port. This can increase bandwidth, redundancy, and load balancing for a server. LACP is part of the IEEE 802.3ad standard for link aggregation. STP stands for Spanning Tree Protocol and is a protocol that prevents loops in a network by blocking redundant links. 802.1Q is a standard for VLAN (Virtual Local Area Network) tagging, which allows multiple logical networks to share the same physical infrastructure. Duplex is a mode of communication that determines how data is transmitted and received on a link. Full duplex allows simultaneous transmission and reception, while half duplex allows only one direction at a time. References: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 1.5: Compare and contrast network cabling types, standards and speeds.
Question 6:
Users have reported an issue connecting to a server over the network. A workstation was recently added to the network and configured with a shared USB printer. Which of the following is most likely causing the issue?
A. The switch is oversubscribed and cannot handle the additional throughput.
B. The printer is tying up the server with DHCP discover messages.
C. The web server\’s back end was designed for only single-threaded applications.
D. The workstation was configured with a static IP that is the same as the server.
Correct Answer: D
If a workstation is configured with a static IP address that is the same as the server\’s IP address, it can lead to network conflicts and connectivity issues. This is known as an IP address conflict, where two devices on the same network have the same IP address.
Question 7:
A network administrator is configuring a server to be placed on the network. The end users will be accessing an application via a web browser that requires them to log into the application. Which of the following protocols would allow a secure connection?
A. SCP
B. SSH
C. HTTPS
D. SFTP
Correct Answer: C
Question 8:
A technician needs to configure a routing protocol for an internet-facing edge router. Which of the following routing protocols will the technician MOST likely use?
A. BGP
B. RIPv2
C. OSPF
D. EIGRP
Correct Answer: A
Border Gateway Protocol (BGP) is used to Exchange routing information for the internet and is the protocol used between ISP which are different ASes. The protocol can connect together any internetwork of autonomous system using an arbitrary topology.
Question 9:
Which of the following is the next step to take after successfully testing a root cause theory?
A. Determine resolution steps.
B. Duplicate the problem in a lab.
C. Present the theory for approval.
D. Implement the solution to the problem.
Correct Answer: A
Once a root cause theory has been tested and verified, the next step is to devise a plan for resolving the identified issue or problem. This involves determining the specific steps or actions necessary to implement a solution based on the validated theory. It precedes the actual implementation of the solution to address the problem effectively and prevent its recurrence.
Question 10:
A technician wants to deploy a new wireless network that comprises 30 WAPs installed throughout a three-story office building. All the APs will broadcast the same SSID for client access. Which of the following BEST describes this deployment?
A. Extended service set
B. Basic service set
C. Unified service set
D. Independent basic service set
Correct Answer: A
Extended Service Set is configured on multiple access points to form an extended service area. The question states there is 30 wireless access points
Question 11:
A network administrator needs to set up a file server to allow user access. The organization uses DHCP to assign IP addresses. Which of the following is the best solution for the administrator to set up?
A. A separate scope for the file server using a /32 subnet
B. A reservation for the server based on the MAC address
C. A static IP address within the DHCP IP range
D. A SLAAC for the server
Correct Answer: B
Assigning a DHCP reservation for the server based on its MAC address ensures that the file server will consistently receive the same IP address every time it connects to the network. This approach provides the advantages of DHCP (automatic assignment of IP addresses) while also guaranteeing a specific and consistent IP address for the file server, making it easy for users to access it reliably.
Question 12:
Which of the following OSI model layers would allow a user to access and download flies from a remote computer?
A. Session
B. Presentation
C. Network
D. Application
Correct Answer: D
The application layer of the OSI model (Open Systems Interconnection) is responsible for providing services to applications that allow users to access and download files from a remote computer. These services include file transfer, email, and web access, as well as other related services. In order for a user to access and download files from a remote computer, the application layer must provide the necessary services that allow the user to interact with the remote computer.
Question 13:
Which of the following would be used to adjust resources dynamically for a virtual web server under variable loads?
A. Elastic computing
B. Scalable networking
C. Hybrid deployment
D. Multitenant hosting
Correct Answer: A
Elastic computing involves the allocation of resources on demand, so that the resources available to a virtual web server can be increased or decreased as needed in order to handle varying levels of traffic or demand. This can help to ensure that the web server has the resources it needs to handle any workload, without wasting resources when demand is low.
Scalable networking refers to the ability of a network to expand or contract as needed in order to meet changing demand. Hybrid deployment involves the use of a combination of on-premises and cloud-based resources. Multitenant hosting involves the use of a single instance of a software application to serve multiple customers, each with their own customized version of the application.
https://en.wikipedia.org/wiki/Elasticity_(cloud_computing) https://www.geeksforgeeks.org/scalability-and-elasticity-in-cloud-computing/
Question 14:
A consultant is working with two international companies. The companies will be sharing cloud resources for a project.
Which of the following documents would provide an agreement on how to utilize the resources?
A. MOU
B. NDA
C. AUP
D. SLA
Correct Answer: A
A memorandum of understanding (MOU) is a document that describes an agreement between two or more parties on how to utilize shared resources for a project. An MOU is not legally binding, but it outlines the expectations and responsibilities of each party involved in the collaboration. An MOU can be used when two international companies want to share cloud resources for a project without creating a formal contract. References: https://www.comptia.org/training/books/network-n10-008-study-guide (page 405)
Question 15:
Which of the following would be used when connecting devices that have different physical characteristics?
A. A proxy server
B. An industrial control system
C. A load balancer
D. A media converter
Correct Answer: D
A media converter converts the signal from one media type (e.g., copper Ethernet) to another media type (e.g., fiber Ethernet). Devices that have different physical characteristics (i.e., different Layer 1 mediums) have to use a media converter for proper communication between them.