- (Topic 3)
Which of the following indicates a computer has reached end-of-support?
Correct Answer:
D
No more patches or bug fixes are available indefinitely. This indicates that a computer has reached end-of-support, which means that the manufacturer or vendor of the hardware or software no longer provides technical assistance, updates, or security fixes for the product12. This can expose the computer to potential security risks and compatibility issues with newer technologies
- (Topic 1)
Which of the following systems would MOST likely be found in a screened subnet?
Correct Answer:
B
FTP (File Transfer Protocol) is a system that would most likely be found in a screened subnet. A screened subnet, or triple-homed firewall, is a network architecture where a single firewall is used with three network interfaces. It provides additional protection from outside cyber attacks by adding a perimeter network to isolate or separate the internal network from the public-facing internet1. A screened subnet typically hosts systems that need to be accessed by both internal and external users, such as web servers, email servers, or FTP servers. References: https://www.techtarget.com/searchsecurity/definition/screened- subnet#:~:text=A screened subnet, or triple-homed firewall, refers to,a perimeter network to isolate or separate the 1
- (Topic 3)
A local service provider connected 20 schools in a large city with a fiber-optic switched network. Which of the following network types did the provider set up?
Correct Answer:
B
MAN stands for Metropolitan Area Network, and it is a type of network that covers a large geographic area, such as a city or a county. MANs are often used to connect multiple LANs (Local Area Networks) within a region, such as schools, offices, or government buildings. MANs typically use high-speed and high-capacity transmission media, such as fiber-optic cables, to provide fast and reliable data communication. MANs can also provide access to WANs (Wide Area Networks), such as the Internet, or other services, such as cable TV or VoIP.
The other options are not correct because they are not the type of network that covers a large city. They are:
✑ LAN. LAN stands for Local Area Network, and it is a type of network that covers a
small geographic area, such as a home, an office, or a building. LANs are often used to connect multiple devices, such as computers, printers, or phones, within a single network. LANs typically use low-cost and low-capacity transmission media, such as twisted-pair cables, to provide data communication. LANs can also provide access to other networks, such as MANs or WANs, through routers or gateways.
✑ CAN. CAN stands for Campus Area Network, and it is a type of network that
covers a moderate geographic area, such as a university, a hospital, or a military base. CANs are often used to connect multiple LANs within a campus, such as different departments, buildings, or facilities. CANs typically use medium-cost and medium-capacity transmission media, such as coaxial cables, to provide data communication. CANs can also provide access to other networks, such as MANs or WANs, through routers or gateways.
✑ WAN. WAN stands for Wide Area Network, and it is a type of network that covers
a very large geographic area, such as a country, a continent, or the world. WANs are often used to connect multiple MANs or LANs across different regions, such as
different cities, states, or countries. WANs typically use high-cost and high- capacity transmission media, such as satellite links, to provide data communication. WANs can also provide access to various services, such as the Internet, email, or VPN.
References1: What is a Metropolitan Area Network (MAN)? - Definition from
Techopedia2: Network+ (Plus) Certification | CompTIA IT Certifications3: What is a Local Area Network (LAN)? - Definition from Techopedia4: What is a Campus Area Network (CAN)? - Definition from Techopedia5: What is a Wide Area Network (WAN)? - Definition from Techopedia
- (Topic 3)
Which of the Mowing architectures reduces network latency by enforcing a limit on the number of switching devices on the frame's path between any internal hosts?
Correct Answer:
A
It does this by using a two-level hierarchy of switches, where the spine switches connect to the leaf switches, which in turn connect to the end hosts. This reduces the number of hops a packet must take from one host to another, thus reducing latency. According to the CompTIA Network+ N10-008 Exam Guide, the Spine and Leaf topology is a modern architecture that is used to reduce latency in large networks.
- (Topic 3)
A technician was cleaning a storage closet and found a box of transceivers labeled 8Gbps. Which of the following protocols uses those transceivers?
Correct Answer:
C
Fibre Channel is a high-speed network technology that is mainly used for storage area networks (SANs). It provides reliable and secure data transfer between servers and storage devices, such as disk arrays, tape libraries, and optical jukeboxes. It uses protocols such as SCSI, FCP, and FICON to transport data over optical fiber or copper cables678 Fibre Channel transceivers are devices that convert electrical signals to optical signals and vice versa, and allow Fibre Channel devices to communicate over different media types
and distances. They are usually pluggable modules that fit into standard ports on Fibre Channel switches, adapters, and storage devices. They have different specifications and standards, such as SFP, SFP+, QSFP, and CFP, depending on the data rate, wavelength, and cable type they support.
8 Gbps transceivers are Fibre Channel transceivers that support a data rate of 8 gigabits per second, which is also known as Fibre Channel-8G or 8GFC. They are typically SFP+ modules that use 850 nm wavelength and multimode fiber for short-reach applications, or 1310 nm wavelength and single-mode fiber for long-reach applications. They can support cable distances up to 10 km or 40 km, depending on the fiber type and quality.
