Common Assessment - 10/28/2024

The ________ layer connects users via lower and switches and wireless access points in a three layered network design.

• Network

• Distribution

• Access

• Core

Answer explanation

The Access layer connects users through lower switches and wireless access points, facilitating direct user access to the network. This layer is essential for end-user connectivity, making 'Access' the correct choice.

The encapsulation process is best described as

• Packets, frames, bits, data, and segments.

• Data, segments, packets, frames, and bits

• Bits, packets, data, segments, and frames

• Frames, bits, segments and packets

Answer explanation

The encapsulation process involves wrapping data with protocol information at each layer. The correct order is Data, segments, packets, frames, and bits, reflecting how data is structured and transmitted across networks.

Firewall, password policies, and data encryptions are examples of _______ security.

• Logical

• Data

• Physical

• Network

Answer explanation

Firewall, password policies, and data encryptions are measures that protect information systems and data integrity, which fall under logical security. Logical security focuses on software and data protection, unlike physical or network security.

Bluetooth communication would be appropriate in which of the following applications?

• Internal hard drive to memory

• Cell phone to storage area network

• Cell phone to wireless headset

• Nic to switch

Answer explanation

Bluetooth is ideal for short-range wireless communication, making it suitable for connecting a cell phone to a wireless headset. Other options involve longer-range or wired connections, which are not appropriate for Bluetooth.

The topology diagram below illustrate the various cities where a company's offices are located. What was best described the network this company has deployed?

• MAN

• CAN

• LAN

• WAN

Answer explanation

The network described is a MAN (Metropolitan Area Network) as it connects multiple offices across various cities, typically within a specific geographic area, unlike LAN (Local Area Network) or WAN (Wide Area Network) which cover smaller or larger areas respectively.

Packet analyzers are used by network administrators and network security engineers

• As an intrusion detection system

• To send packets sniffers to security analysts

• To allow closing of discovered open ports.

• In order to display packets with very detailed information

Answer explanation

Packet analyzers are tools that capture and display network packets in detail, allowing administrators to analyze traffic and troubleshoot issues effectively. This makes 'In order to display packets with very detailed information' the correct choice.

The network technician responsible for a LAN has determined that a network problem has occurred before the point of present or demarcation point technicians should contact the

• Computer manufacturer

• Federal Communications Commission

• DHCP server manufacturer

• Internet service provider

Answer explanation

The issue is before the demarcation point, indicating it's likely related to the service provider's network. Therefore, the technician should contact the Internet service provider for assistance.

Which of the following lists correctly arranges the layers of the OSI model from layer 7 to layer 1?

• Presentation, application, sessions, network, transport, data link, and physical

• Physical, datalink, network, transport, session, presentation, and application

• Application, session, transport, network, presentation, data link, and physical

• Application, presentation, session, transport, network, data link, and physical

Answer explanation

The correct order of the OSI model layers from layer 7 to layer 1 is: Application, Presentation, Session, Transport, Network, Data Link, and Physical. Thus, the correct choice is 'Application, presentation, session, transport, network, data link, and physical'.

Which of the following types of media offers the greatest protection against the effects of lightning strikes?

• Fiber optic

• UTP

• Coaxial

• STP

Answer explanation

Fiber optic media offers the greatest protection against lightning strikes because it transmits data as light, making it immune to electromagnetic interference and electrical surges, unlike UTP, coaxial, and STP cables.

A small business has a Class C network license and needs to create 5 usable subnets, each subnet capable of accommodating at least 20 hosts. Which of the following is the appropriate IP for subnet mask

• 255.255.255.0

• 255.255.255.192

• 255.255.255.224

• 255.255.255.240

Answer explanation

The subnet mask 255.255.255.240 allows for 16 IP addresses per subnet, providing 14 usable hosts. This meets the requirement for 5 subnets, each accommodating at least 20 hosts, making it the correct choice.