D386 - Concepts Questions with Verified
Correct Answers
A network topology where all devices connect to a single shared cable. Devices share
one communication line, which can cause collisions, and all connected devices receive
the traffic sent across the network.
Bus
A network topology where each device connects to exactly two neighboring devices.
Data travels around, typically in one direction, which reduces collisions. A break in the
connection can cause the entire network to fail.
Ring
A network topology where each device connects individually to a central switch, which
forwards communication to the correct destination. It is the most common topology in
LANs, and a break in one device's connection only affects that device.
Star
A network topology where devices connect to multiple or all other devices, providing
redundancy and allowing data to reroute around failed connections. Commonly used
with Wi-Fi networks.
Mesh
A hierarchical variation of the star topology where groups of devices connect through a
central backbone. A backbone failure can bring down the network, and adding devices
can require difficult or costly reconfiguration.
Tree
,A communication mode where data travels in only one direction. The sender can
transmit data but cannot receive it.
Simplex Mode
A communication mode where data can travel in both directions, but only one direction
at a time, like a walkie-talkie.
Half Duplex Mode
A communication mode where data can be sent and received in both directions
simultaneously, like a telephone conversation.
Full-Duplex Mode
Combines multiple signals or data streams into a single signal for transmission over one
communication link.
Multiplexing
Passively monitors network traffic for suspicious activity or threats and alerts an
administrator when potential threats are detected.
Intrusion detection system (IDS)
Actively monitors network traffic and intercepts or blocks detected threats. It operates
in-line with network traffic, creating a choke point through which traffic must pass.
Intrusion prevention system (IPS)
Combines multiple network security functions into a single device or service.
Unified Threat Management (UTM)
, The process of verifying a user's identity before allowing access, using methods such as
passwords, two-factor authentication, biometrics, or an access control server.
AAA Network Security
Directs data packets between networks and selects the appropriate path to their
destination using IP addresses and routing rules
Router
Connects multiple devices on a network and forwards data only to its intended device
by identifying which device is connected to each port.
Switch
Connects one network to another, such as connecting a private network to the internet
or to a larger private network.
Gateway
Connects multiple devices on a network but broadcasts all incoming data to every
connected device rather than sending it only to the intended destination. Considered
obsolete due to its inefficiency.
Hub
Connects multiple network segments or subnetworks to form a single larger network.
Bridge
Converts network data into a format that can travel over the medium used for an
internet connection, such as cable, fiber, cellular, or telephone lines.
Modem
Correct Answers
A network topology where all devices connect to a single shared cable. Devices share
one communication line, which can cause collisions, and all connected devices receive
the traffic sent across the network.
Bus
A network topology where each device connects to exactly two neighboring devices.
Data travels around, typically in one direction, which reduces collisions. A break in the
connection can cause the entire network to fail.
Ring
A network topology where each device connects individually to a central switch, which
forwards communication to the correct destination. It is the most common topology in
LANs, and a break in one device's connection only affects that device.
Star
A network topology where devices connect to multiple or all other devices, providing
redundancy and allowing data to reroute around failed connections. Commonly used
with Wi-Fi networks.
Mesh
A hierarchical variation of the star topology where groups of devices connect through a
central backbone. A backbone failure can bring down the network, and adding devices
can require difficult or costly reconfiguration.
Tree
,A communication mode where data travels in only one direction. The sender can
transmit data but cannot receive it.
Simplex Mode
A communication mode where data can travel in both directions, but only one direction
at a time, like a walkie-talkie.
Half Duplex Mode
A communication mode where data can be sent and received in both directions
simultaneously, like a telephone conversation.
Full-Duplex Mode
Combines multiple signals or data streams into a single signal for transmission over one
communication link.
Multiplexing
Passively monitors network traffic for suspicious activity or threats and alerts an
administrator when potential threats are detected.
Intrusion detection system (IDS)
Actively monitors network traffic and intercepts or blocks detected threats. It operates
in-line with network traffic, creating a choke point through which traffic must pass.
Intrusion prevention system (IPS)
Combines multiple network security functions into a single device or service.
Unified Threat Management (UTM)
, The process of verifying a user's identity before allowing access, using methods such as
passwords, two-factor authentication, biometrics, or an access control server.
AAA Network Security
Directs data packets between networks and selects the appropriate path to their
destination using IP addresses and routing rules
Router
Connects multiple devices on a network and forwards data only to its intended device
by identifying which device is connected to each port.
Switch
Connects one network to another, such as connecting a private network to the internet
or to a larger private network.
Gateway
Connects multiple devices on a network but broadcasts all incoming data to every
connected device rather than sending it only to the intended destination. Considered
obsolete due to its inefficiency.
Hub
Connects multiple network segments or subnetworks to form a single larger network.
Bridge
Converts network data into a format that can travel over the medium used for an
internet connection, such as cable, fiber, cellular, or telephone lines.
Modem
