CERTMASTER COMPTIA
NETWORK+ FINAL
ASSESSMENT
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, Certainly! Here are all the questions numbered:
1. Compare and contrast IoT devices. 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 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 outlined in RFC1918 as usable for private, non-
routable addresses, so addresses within that range, specifically 192.168.1.0/24 and
192.168.2.0/24 in this scenario. Two (2) seconds is the best heartbeat in this situation since
it is the longest available that is less than the Keepalive value. This reduces congestion
without allowing active devices to be disconnected.
2. 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
NETWORK+ FINAL
ASSESSMENT
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, Certainly! Here are all the questions numbered:
1. Compare and contrast IoT devices. 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 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 outlined in RFC1918 as usable for private, non-
routable addresses, so addresses within that range, specifically 192.168.1.0/24 and
192.168.2.0/24 in this scenario. Two (2) seconds is the best heartbeat in this situation since
it is the longest available that is less than the Keepalive value. This reduces congestion
without allowing active devices to be disconnected.
2. 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
