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Question 1:

Which of the following protocols can be used to change device configurations via encrypted and authenticated sessions? (Select TWO).

A. SNMPv3

B. SSh

C. Telnet

D. IPSec

E. ESP

F. Syslog

Correct Answer: AB

SNMPv3 (Simple Network Management Protocol version 3) is a protocol that provides secure access to network devices by encrypting and authenticating SNMP messages. It is used to manage and monitor network devices and can be used to change device configurations.

SSH (Secure Shell) is a protocol that provides secure remote access to network devices by encrypting and authenticating sessions between devices. It is commonly used to access and manage network devices, such as routers and switches, and can be used to change device configurations.

Question 2:

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 3:

A technician removes an old PC from the network and replaces it with a new PC that is unable to connect to the LAN. Which of the Mowing is MOST likely the cause of the issue?

A. Port security

B. Port tagging

C. Port aggregation

D. Port mirroring

Correct Answer: A

The most likely cause of the issue is port security. When a new device is connected to a network, port security can prevent the device from connecting if it is not authorized. The old PC might have been authorized to connect, but the new PC is not. To resolve the issue, the technician will need to configure port security to allow the new PC to connect.

Question 4:

An engineer is gathering data to determine the effectiveness of UPSs in use at remote retail locations. Which of the following statistics can the engineer use to determine the availability of the remote network equipment?

A. Uptime

B. NetFlow baseline

C. SNMP traps

D. Interface statistics

Correct Answer: A

Uptime is a statistic that can be used to determine the availability of the remote network equipment. Uptime is the amount of time that a device or system has been running without experiencing any failures or disruptions. It is commonly expressed as a percentage of total time, such as 99.99% uptime. By measuring the uptime of the network equipment at the remote retail locations, the engineer can determine how reliable and available the equipment is.

Question 5:

A technician is troubleshooting network connectivity from a wall jack. Readings from a multimeter indicate extremely low ohmic values instead of the rated impedance from the switchport. Which of the following is the MOST likely cause of this issue?

A. Incorrect transceivers

B. Faulty LED

C. Short circuit

D. Upgraded OS version on switch

Correct Answer: C

Short circuit: A short circuit occurs when there is an unintended connection between two conductors or components that are not supposed to be electrically connected. This can result in extremely low resistance (ohmic value), causing a significant current flow. In the context of network cabling, a short circuit could occur due to damaged or frayed cables, improper termination, or physical damage to the cabling infrastructure.

Question 6:

A network technician has just implemented a new wireless network that requires clients to use a WEP key for access. The technician is now required to make changes to ensure the network uses the strongest encryption available. After the changes are implemented, several users report being unable to connect. Which of the following is the MOST likely cause?

A. RADIUS server failure

B. Security type mismatch

C. Wrong passphrase

D. Incorrect SSID

Correct Answer: B

Question 7:

A network engineer is hardening the security of a remote office. The firewall at this location needs to remain accessible for remote management by technicians. The firewall vendor advises disabling port 443 from WAN-facing access. In addition to disabling port 443, which of the following can the engineer do to MOST effectively balance the remote connectivity and security needs for this site?

A. Enable an IPSec tunnel.

B. Enable RDP access to the firewall.

C. Enable port 80 access.

D. Enable Telnet access to the firewall

Correct Answer: B

Question 8:

A Chief Information Officer (CIO) wants to improve the availability of a company\’s SQL database. Which of the following technologies should be utilized to achieve maximum availability?

A. Clustering

B. Port aggregation

C. NIC teaming

D. Snapshots

Correct Answer: A

Clustering is a technique that involves grouping multiple servers or instances together to provide high availability and fault tolerance for a database. Clustering can help improve the availability of a SQL database by allowing automatic failover

and load balancing between the cluster nodes. If one node fails or becomes overloaded, another node can take over the database operations without disrupting the service.

References: https://www.educba.com/sql-cluster/

Question 9:

Following the implementation of a BYOD policy, some users in a high-density environment report slowness over the wireless connection. Some wireless controller reports indicate high latency and airttime contention. Which of the following is the most probable root cause?

A. The AP is configured with 2.4GHz frequency, which the new personal devices do not support.

B. The AP is configured with 2.4GHz frequency without band-steering capabilities.

C. The AP is configured with 5Ghz frequency with band-steering capabilities.

D. The AP is configured with 5Ghz frequency, which the new personal devices do not support

Correct Answer: B

In high-density environments, using the 2.4GHz frequency without band-steering capabilities can lead to increased interference and contention, as many devices may be trying to use the same frequency. Band-steering helps distribute devices between 2.4GHz and 5GHz frequencies, optimizing the use of available spectrum and reducing contention.

Question 10:

A network administrator has received calls every day for the past few weeks from three users who cannot access the network. The administrator asks all the users to reboot their PCs, but the same users still cannot access the system. The following day, three different users report the same issue, and the administrator asks them all to reboot their PCs; however, this does not fix the issue. Which of the following is MOST likely occurring?

A. Incorrect firewall settings

B. Inappropriate VLAN assignment

C. Hardware failure

D. Overloaded CAM table in switch

E. DHCP scope exhaustion

Correct Answer: E

Based on the information provided, it is unlikely that the CAM table is the problem. The CAM table is used in switches to map MAC addresses to switch ports and is typically updated dynamically as devices communicate on the network. If there were a problem with the CAM table, it would typically result in connectivity issues for all users connected to the affected switch, not just a few.

Question 11:

Given the following information:

Which of the following command-line tools would generate this output?

A. netstat

B. arp

C. dig

D. tracert

Correct Answer: A

Question 12:

Which of the following options represents the participating computers in a network?

A. Nodes

B. CPUs

C. Servers

D. Clients

Correct Answer: A

In a broader sense, “node” is a general term that refers to any device connected to a network. This can include devices that play various roles, such as servers, routers, switches, hubs, and even individual computers or devices like printers. A node is essentially any point of connection within a network, whether it\’s a device responsible for managing traffic (like routers and switches) or devices that consume resources (like computers and smartphones).

Clients:

Clients are a specific type of node in a network architecture. They are devices that request and consume services, data, or resources from other devices or servers on the network. Clients are typically end-user devices, such as computers, laptops, smartphones, tablets, or any device that accesses and interacts with resources provided by servers or other devices. Clients initiate requests to servers for services like web browsing, email, file sharing, and more.

Reference: https://en.wikipedia.org/wiki/Node_(networking)

Question 13:

A large number of PCs are obtaining an APIPA IP address, and a number of new computers were added to the network. Which of the following is MOST likely causing the PCs to obtain an APIPA address?

A. Rogue DHCP server

B. Network collision

C. Incorrect DNS settings

D. DHCP scope exhaustion

Correct Answer: D

B and C are irrelevant to the topic.

A rogue DHCP server would be handing out addresses from outside to APIPA range, which would most likely cause IP Conflict, which is when 2 or more devices on the same network shares the same IP Address.

D is correct because when you run out of Addresses to hand out, the DHCP can\’t do anything and so APIPA takes over and hands out an random address from within the APIPA range.

Question 14:

Which of the following is used to track and document various types of known vulnerabilities?

A. CVE

B. Penetration testing

C. Zero-day

D. SIEM

E. Least privilege

Correct Answer: A

CVE is the acronym for Common Vulnerabilities and Exposures and the link to the website is posted by EpitomeOfSalt.

Question 15:

At which of the following OSI model layers would a technician find an IP header?

A. Layer 1

B. Layer 2

C. Layer 3

D. Layer 4

Correct Answer: C

The seven layers of the OSI model are:

Physical layer: responsible for transmitting raw data bits over a physical medium such as a cable.

Data Link layer: provides error-free transmission of data frames over the physical layer.

Network layer: responsible for routing and addressing of data packets.

Transport layer: provides reliable end-to-end communication between applications.

Session layer: establishes, manages, and terminates communication sessions between applications.

Presentation layer: formats and encrypts data for network transmission.

Application layer: provides the interface between the application and the network for communication.