CompTIA N10-008 Practice Test - Questions Answers, Page 3

Two-factor authentication (2FA) is a method of verifying a user’s identity by requiring two pieces of evidence, such as something the user knows (e.g., a password) and something the user has (e.g., a token or a smartphone). 2FA adds an extra layer of security that makes it harder for hackers to access a user’s account by brute-force programs. Complex passwords are passwords that are long, random, and use a combination of uppercase and lowercase letters, numbers, and symbols. Complex passwords are more resistant to brute-force attacks than simple or common passwords. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://www.csoonline.com/article/3225913/what-is-two-factor-authentication- 2fa-how-to-enable-it-and-why-you-should.html, https://www.howtogeek.com/195430/how-to- create-a-strong-password-and-remember-it/

NIC teaming is a technique that combines two or more network interface cards (NICs) on a server into a single logical interface that can increase bandwidth, provide redundancy, and balance traffic. NIC teaming can be configured with different modes and algorithms depending on the desired outcome. Link Aggregation Control Protocol (LACP) is a protocol that enables NIC teaming by dynamically bundling multiple links between two devices into one logical link. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://docs.microsoft.com/en-us/windows-server/networking/technologies/nic- teaming/nic-teaming

A subnet mask is a binary number that indicates which bits of an IP address belong to the network portion and which bits belong to the host portion. A slash notation (/n) indicates how many bits are used for the network portion. A /20 notation means that 20 bits are used for the network portion and 12 bits are used for the host portion. To convert /20 to a dotted decimal notation, we need to write 20 ones followed by 12 zeros in binary and then divide them into four octets separated by dots. This gives us 11111111.11111111.11110000.00000000 or 255.255.240.0 in decimal. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://www.techopedia.com/definition/950/subnet-mask

The maximum transmission unit (MTU) is the largest size of a data packet that can be transmitted over a network. A standard Ethernet frame supports an MTU of 1500 bytes, which is the default value for most Ethernet networks. Larger MTUs are possible with jumbo frames, but they are not widely supported and may cause fragmentation or compatibility issues. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://en.wikipedia.org/wiki/Maximum_transmission_unit

Tracert is a command-line tool that traces the route of a packet from a source to a destination and displays the number of hops and the round-trip time for each hop. The output shown in the question is an example of a tracert output, which shows five hops with their IP addresses and hostnames (if available) and three latency measurements for each hop in milliseconds. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://www.lumen.com/help/en-us/network/traceroute/understanding-the- traceroute-output.html

According to troubleshooting methodology, after determining the most likely probable cause of an issue, the next step is to establish a plan of action to resolve the issue and identify potential effects. This step involves defining the steps needed to implement a solution, considering the possible consequences of each step, and obtaining approval from relevant stakeholders if necessary.

Reference: https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008- exam-objectives-(2-0), https://www.comptia.org/blog/the-comptia-guide-to-it-troubleshooting

IDS stands for intrusion detection system, which is a network appliance that monitors network traffic and alerts administrators of any suspicious or malicious activity. An IDS can warn of unapproved devices that are accessing the network by detecting anomalies, signatures, or behaviors that indicate unauthorized access attempts or attacks. Reference: https://partners.comptia.org/docs/default- source/resources/comptia-network-n10-008-exam-objectives-(2-0), https://www.cisco.com/c/en/us/products/security/what-is-an-intrusion-detection-system-ids.html

Coaxial cable is a type of cable that consists of a central copper conductor surrounded by an insulating layer and a braided metal shield. Coaxial cable is commonly used to connect a cable modem to an ISP by transmitting data over cable television networks. Coaxial cable can support high bandwidth and long distances with minimal interference or attenuation. Reference:

https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam- objectives-(2-0), https://www.techopedia.com/definition/4027/coaxial-cable

CRC stands for Cyclic Redundancy Check, and it is a type of error-detecting code used to detect accidental changes to raw data. If the CRC count is increasing on a particular interface, it indicates that there might be an issue with the cabling, which is causing data corruption. Reference:

Network+ N10-008 Objectives: 2.1 Given a scenario, troubleshoot common physical connectivity issues.