©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
CertMaster CompTIA Network+ Final
Assessment Questions With Correct Answers
PBQ 1 Compare and contrast IoT devices. - answer✔Reduction of congestion and jitter are key
components of maintaining a reliable IoT network. Some settings and best practices differ from
other types of networks.
Use some form of encryption for communications on an IoT network due to the potential high
impact combined with a wide attack surface. DTLS is a good option.
Several messaging protocols exist for publish-subscribe messaging used in networks with large
numbers of devices intercommunicating with one another. CoAP is one commonly used example
of one such "message broker" protocol. DTLS-secured CoAP uses port 5684. Simple Network
Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing
information about managed devices
on IP networks and adjusting that information to change device behavior. Network
administrators frequently use SNMP for network monitoring. SNMP provides management data
in the form of variables on managed systems, detailing the system status and configuration,
which may subsequently be queried remotely by managing software. Given the option, UDP is
generally preferable to TCP for loT networks because loT communications focus on low-latency
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
communications more so than reliability. UDP header size is light-weight compared to the TCP
header size and is connectionless, which reduces overhead. The messaging protocol CoAP works
over UDP and is compatible with security protocols like DTLS. However, Power Saving Modes
are best avoided with UDP to
eld Devices. To ensure messages and heartbeats pass correctly, redundancy in the form of link
aggregation load balancing is useful and recommended. IANA has allocated the block
100.64.0.0/10 (100.64.0.0 to 100.127.255.255, netmask 255.192.0.0) for use in carrier-grade
NAT scenarios. The
range 127.0.0.0/8 is reserved for local loopback addresses. The range 192.168.0.0/16 was outlin
A security administrator receives an alert about a possible attack against the SAE protocol.
Which wireless
authentication mechanism uses this?
A. WEP
B. WPA
C. WPA2
D. WPA3 - answer✔In WPA3, the Simultaneous Authentication of Equals (SAE) protocol
replaces the 4-way handshake, which has been
found to be vulnerable to various attacks.
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
WEP is an old protocol that is no longer safe to use, though it does not use the SAE protocol.
WEP uses an
outdated RC4 stream cipher to encrypt traffic.
The first version of Wi-Fi Protected Access (WPA) was designed to fix critical vulnerabilities in
the earlier wired
equivalent privacy (WEP) standard.
In WPA2, pre-shared key (PSK) authentication uses a passphrase to generate the key that is used
to encrypt
communications. It is also referred to as group authentication because a group of users share the
same secret.
Which Open Systems Interconnection (OSI) model layer is responsible for the transmission of
bits of data?
A. Physical
B. Datalink
C. Network
D. Transport - answer✔The physical layer of the OSI model (layer 1) is responsible for the
transmission and receipt of the signals that
represent bits of data from one node to another node.
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
The data link layer (layer 2) is responsible for transferring data between nodes on the same
logical segment. At
the Data Link layer, a segment is one where all nodes can send traffic to one another using
hardware addresses.
The network layer (layer 3) is responsible for moving data (routing) around a network of
networks, known as an
internetwork or the Internet.
The transport layer is known as the end-to-end or host-to-host layer. A function of the transport
layer is to identify
each type of network application by assigning it a port number.
As an organization is preparing for an upcoming inclement weather season, the server team has
been asked to
introduce a device to their server room that will provide a temporary power source solely to the
server in the
event of a blackout. This protection will ensure that the server is protected from spiking electrical
charges
associated with the incremental current. What is the name of this device?
A. UPS
10/11/2024 1:41 PM
CertMaster CompTIA Network+ Final
Assessment Questions With Correct Answers
PBQ 1 Compare and contrast IoT devices. - answer✔Reduction of congestion and jitter are key
components of maintaining a reliable IoT network. Some settings and best practices differ from
other types of networks.
Use some form of encryption for communications on an IoT network due to the potential high
impact combined with a wide attack surface. DTLS is a good option.
Several messaging protocols exist for publish-subscribe messaging used in networks with large
numbers of devices intercommunicating with one another. CoAP is one commonly used example
of one such "message broker" protocol. DTLS-secured CoAP uses port 5684. Simple Network
Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing
information about managed devices
on IP networks and adjusting that information to change device behavior. Network
administrators frequently use SNMP for network monitoring. SNMP provides management data
in the form of variables on managed systems, detailing the system status and configuration,
which may subsequently be queried remotely by managing software. Given the option, UDP is
generally preferable to TCP for loT networks because loT communications focus on low-latency
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
communications more so than reliability. UDP header size is light-weight compared to the TCP
header size and is connectionless, which reduces overhead. The messaging protocol CoAP works
over UDP and is compatible with security protocols like DTLS. However, Power Saving Modes
are best avoided with UDP to
eld Devices. To ensure messages and heartbeats pass correctly, redundancy in the form of link
aggregation load balancing is useful and recommended. IANA has allocated the block
100.64.0.0/10 (100.64.0.0 to 100.127.255.255, netmask 255.192.0.0) for use in carrier-grade
NAT scenarios. The
range 127.0.0.0/8 is reserved for local loopback addresses. The range 192.168.0.0/16 was outlin
A security administrator receives an alert about a possible attack against the SAE protocol.
Which wireless
authentication mechanism uses this?
A. WEP
B. WPA
C. WPA2
D. WPA3 - answer✔In WPA3, the Simultaneous Authentication of Equals (SAE) protocol
replaces the 4-way handshake, which has been
found to be vulnerable to various attacks.
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
WEP is an old protocol that is no longer safe to use, though it does not use the SAE protocol.
WEP uses an
outdated RC4 stream cipher to encrypt traffic.
The first version of Wi-Fi Protected Access (WPA) was designed to fix critical vulnerabilities in
the earlier wired
equivalent privacy (WEP) standard.
In WPA2, pre-shared key (PSK) authentication uses a passphrase to generate the key that is used
to encrypt
communications. It is also referred to as group authentication because a group of users share the
same secret.
Which Open Systems Interconnection (OSI) model layer is responsible for the transmission of
bits of data?
A. Physical
B. Datalink
C. Network
D. Transport - answer✔The physical layer of the OSI model (layer 1) is responsible for the
transmission and receipt of the signals that
represent bits of data from one node to another node.
, ©SIRJOEL EXAM SOLUTIONS
10/11/2024 1:41 PM
The data link layer (layer 2) is responsible for transferring data between nodes on the same
logical segment. At
the Data Link layer, a segment is one where all nodes can send traffic to one another using
hardware addresses.
The network layer (layer 3) is responsible for moving data (routing) around a network of
networks, known as an
internetwork or the Internet.
The transport layer is known as the end-to-end or host-to-host layer. A function of the transport
layer is to identify
each type of network application by assigning it a port number.
As an organization is preparing for an upcoming inclement weather season, the server team has
been asked to
introduce a device to their server room that will provide a temporary power source solely to the
server in the
event of a blackout. This protection will ensure that the server is protected from spiking electrical
charges
associated with the incremental current. What is the name of this device?
A. UPS
