Multifactor authentication is a method of verifying a user's identity by requiring more than one factor, such as something the user knows, something the user has, or something the user is. A password is something the user knows, and a fingerprint is something the user is. Therefore, a user who needs to enter a password and scan a fingerprint is using multifactor authentication.

A network address is an identifier that specifies a group of devices that share a common network prefix. A network address is usually written in dotted decimal notation, such as 80.87.78.0, and is followed by a slash and a number that indicates the length of the network prefix in bits, such as /26. This notation is called CIDR (Classless Inter-Domain Routing) and allows for flexible subnetting of IP networks.
A host address is an identifier that specifies a single device within a network. A host address is derived from the network address by filling the remaining bits after the network prefix with either zeros or ones. A host address is also written in dotted decimal notation, such as 80.87.78.1, and is usually the lowest or the highest possible value within the network range.
To describe a network, we need to know the range of valid host addresses that belong to that network. To find the range, we need to perform the following steps:
Convert the network address and the subnet mask to binary form. The subnet mask is a 32-bit value that has the same number of ones as the network prefix length, followed by zeros. For example, /26 corresponds to 11111111.11111111.11111111.11000000 in binary.
Perform a bitwise AND operation between the network address and the subnet mask to get the network prefix in binary form. This is the common part of all host addresses in the network. For example, 80.87.78.0 in binary is 01010000.01010111.01001110.00000000, and the result of the AND operation is 01010000.01010111.01001110.00000000, which is the same as the network address.
Find the lowest and the highest possible host addresses by changing the remaining bits after the network prefix to either zeros or ones, respectively. For example, the lowest host address is obtained by changing the last 6 bits to zeros, which gives 01010000.01010111.01001110.00000001, or 80.87.78.1 in decimal. The highest host address is obtained by changing the last 6 bits to ones, which gives 01010000.01010111.01001110.00111110, or 80.87.78.62 in decimal.
The range of valid host addresses is the interval between the lowest and the highest host addresses, inclusive. For example, the range for the network 80.87.78.0/26 is 80.87.78.1 - 80.87.78.62.
Based on the above steps, we can conclude that option C is the correct answer, as it describes the network 80.87.78.0/26 with the correct range of host addresses. The other options are incorrect because they either have the wrong network address, the wrong network prefix length, or the wrong host address range. Reference:
CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.6: Network Addressing, Subsection: IPv4 Addressing, pp. 102-105.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.7: Network Addressing, Subsection: Subnetting, p. 39.
IP Subnet Calculator, Calculator.net.

A jump server is a system that allows remote access to internal devices through a single, secure device on the public network. A jump server can be configured with an access control list (ACL) to limit who can access the system and what devices they can connect to. A jump server can also use secure protocols such as SSH or VPN to encrypt the communication between the remote user and the internal device. A jump server is different from a VPN, which creates a virtual private network between the remote user and the internal network. A jump server is also different from a secure shell, which is a protocol that allows remote command execution and file transfer. An API is an application programming interface that allows software components to interact with each other.
Reference:
Other Network Appliances - SY0-601 CompTIA Security+ : 3.31

A NIC is a network interface card that enables a device to connect to a network using a wired or wireless medium. A NIC has a specific speed and bandwidth capacity that determines how much data it can transmit and receive per second. A higher-throughput NIC can handle more traffic than a lower-throughput NIC.
LACP is a link aggregation protocol that allows multiple physical links to be combined into a single logical link. LACP can increase the bandwidth, reliability, and load balancing of a network connection by distributing traffic across multiple links. LACP is also known as IEEE 802.3ad or port channeling.
A network administrator can install an additional NIC on a server and configure LACP to combine the two NICs into one logical link. This can effectively double the throughput of the server's network connection and allow it to handle more traffic without exceeding 1GB. This is the best solution for this issue because it improves the performance and availability of the server without affecting its functionality or requiring additional hardware.
The other options are not the best solutions for this issue because they either do not increase the throughput of the server's network connection, or they have negative impacts on the server's functionality or performance. Removing some of the applications from the server may reduce the traffic generated, but it may also affect the server's role and service delivery. Configuring the NIC to use full duplex may improve the efficiency of the network communication, but it does not increase the bandwidth capacity of the NIC. Configuring port mirroring to send traffic to another server may help with monitoring or troubleshooting, but it does not reduce the traffic load on the original server. Installing a SSD may decrease the data processing time of the server, but it does not affect the network throughput of the server. Reference:
CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.2: Network Device Functions and Features, Subsection: Network Interface Cards, pp. 72-74.
CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.3: Network Cabling and Connectors, Subsection: Link Aggregation, pp. 87-88.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.2: Network Devices, Subsection: Network Interface Cards, p. 28.
Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.3: Network Cabling and Connectors, Subsection: Link Aggregation, p. 31.

"EMI is a problem when cables are installed near electrical devices, such as air conditioners or fluorescent light fixtures. If a network medium is placed close enough to such a device, the signal within the cable might become corrupt. Network media vary in their resistance to the effects of EMI. Standard unshielded twisted-pair (UTP) cable is susceptible to EMI, whereas fiber cable, with its light transmissions, is resistant to EMI. When deciding on a particular medium, consider where it will run and the impact EMI can have on the installation."