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 publishsubscribe
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
PBQ 1 Compare and balancing is useful and recommended. IANA has allocated
contrast IoT devices. the block 100.64.0.0/10 (100.64.0.0 to
,CertMaster CompTIA Network+ Final Assessment
Actual Exam Questions with Complete Definitions
Terms in this set (60)
, / (
100.127.255.255, netmask 255.192.0.0) for use in
carriergrade 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 In WPA3, the Simultaneous Authentication of Equals (SAE)
receives an alert about a protocol replaces the 4-way handshake, which has been
possible attack against the found to be vulnerable to various attacks.
SAE protocol. Which wireless WEP is an old protocol that is no longer safe to use, though it
authentication mechanism does not use the SAE protocol. WEP uses an outdated RC4 stream
uses this? cipher to encrypt traffic.
A. WEP The first version of Wi-Fi Protected Access (WPA) was
B. WPA designed to fix critical vulnerabilities in the earlier wired
C. WPA2 equivalent privacy (WEP) standard.
D. WPA3 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 The physical layer of the OSI model (layer 1) is responsible
Interconnection (OSI) model for the transmission and receipt of the signals that represent
layer is responsible for the bits of data from one node to another node. The data link
transmission of bits of data? layer (layer 2) is responsible for transferring data between
A. Physical nodes on the same logical segment. At the Data Link layer, a
B. Datalink segment is one where all nodes can send traffic to one
C. Network another using hardware addresses.
D. Transport 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.
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 publishsubscribe
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
PBQ 1 Compare and balancing is useful and recommended. IANA has allocated
contrast IoT devices. the block 100.64.0.0/10 (100.64.0.0 to
,CertMaster CompTIA Network+ Final Assessment
Actual Exam Questions with Complete Definitions
Terms in this set (60)
, / (
100.127.255.255, netmask 255.192.0.0) for use in
carriergrade 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 In WPA3, the Simultaneous Authentication of Equals (SAE)
receives an alert about a protocol replaces the 4-way handshake, which has been
possible attack against the found to be vulnerable to various attacks.
SAE protocol. Which wireless WEP is an old protocol that is no longer safe to use, though it
authentication mechanism does not use the SAE protocol. WEP uses an outdated RC4 stream
uses this? cipher to encrypt traffic.
A. WEP The first version of Wi-Fi Protected Access (WPA) was
B. WPA designed to fix critical vulnerabilities in the earlier wired
C. WPA2 equivalent privacy (WEP) standard.
D. WPA3 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 The physical layer of the OSI model (layer 1) is responsible
Interconnection (OSI) model for the transmission and receipt of the signals that represent
layer is responsible for the bits of data from one node to another node. The data link
transmission of bits of data? layer (layer 2) is responsible for transferring data between
A. Physical nodes on the same logical segment. At the Data Link layer, a
B. Datalink segment is one where all nodes can send traffic to one
C. Network another using hardware addresses.
D. Transport 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.
