Q121
Q121 Which protocol is specifically designed for low-power and low-data-rate wireless communications in IoT networks?
Zigbee
LTE
WiMAX
Bluetooth
Q122
Q122 How can you use the iwconfig command in Linux to set the Wi-Fi network's SSID?
iwconfig wlan0 essid [SSID name]
iwconfig set wlan0 ssid [SSID name]
iwconfig ssid [SSID name] wlan0
iwconfig wlan0 connect [SSID name]
Q123
Q123 What command line tool and syntax can be used to analyze Wi-Fi networks and signal strength on a Windows machine?
netsh wlan show networks mode=bssid
wifiinfo view
wlan report
scanwifi networks
Q124
Q124 If a mobile device frequently disconnects from a Wi-Fi network, what should be investigated first?
The device's Wi-Fi adapter settings
The strength and stability of the Wi-Fi signal
The compatibility of the Wi-Fi network protocol
The security settings of the network
Q125
Q125 How can interference from other wireless devices be mitigated in a Wi-Fi network?
Changing the network's operating frequency
Decreasing the network's signal range
Encrypting network traffic
Increasing the number of access points
Q126
Q126 What is SNMP primarily used for in network management?
Encrypting network traffic
Authenticating network users
Monitoring and managing network devices
Routing network traffic
Q127
Q127 Which SNMP component is responsible for collecting data from managed devices?
SNMP manager
SNMP agent
SNMP MIB (Management Information Base)
SNMP trap
Q128
Q128 What type of SNMP message is sent by an agent to notify a manager of an event?
GET
SET
TRAP
ACK
Q129
Q129 How does SNMPv3 improve upon SNMPv1 and SNMPv2?
By increasing the number of MIBs
By adding more TRAP types
By enhancing security features
By extending protocol compatibility
Q130
Q130 In SNMP, what is the role of the MIB?
To store user credentials
To encrypt data
To define a set of manageable objects
To route data
Q131
Q131 What mechanism is used in SNMP to set a value on a managed device?
SNMP GET
SNMP SET
SNMP TRAP
SNMP INFORM
Q132
Q132 Which feature distinguishes SNMP INFORM messages from TRAP messages?
INFORM messages require acknowledgment, while TRAP messages do not
INFORM messages are encrypted, while TRAP messages are not
INFORM messages are used for error reporting, while TRAP messages are not
INFORM messages can only be sent from manager to agent
Q133
Q133 How can you list all SNMP community strings configured on a Linux system?
grep "community" /etc/snmp/snmpd.conf
snmpwalk -v2c -c community localhost
cat /etc/snmp/snmpd.conf
find /etc/snmp/ -type f -exec grep "community" {} \;
Q134
Q134 What command can be used to initiate an SNMP SET request to change a setting on a remote device?
snmpset -v2c -c community host OID value
snmpget -v2c -c community host OID set value
snmpcmd -set -v2c -c community host OID value
snmpconfig -v2c -c community host OID value
Q135
Q135 How can you use SNMP to retrieve the system uptime of a remote device?
snmpget -v2c -c community host 1.3.6.1.2.1.1.3.0
snmpwalk -v2c -c community host 1.3.6.1.2.1.1.3.0
snmpquery -v2c -c community host SYSTEM-UPTIME-OID
snmpuptime -v2c -c community host
Q136
Q136 When an SNMP-managed device is not responding to requests, what is a common first step to troubleshoot?
Checking the network connection to the device
Verifying the device's SNMP configuration
Testing with a different SNMP manager
Reviewing the device's firewall settings
Q137
Q137 How can network congestion impact SNMP-based network management?
It can delay SNMP TRAP delivery
It can prevent SNMP SET commands from reaching devices
It can cause SNMP query timeouts
It can corrupt SNMP messages
Q138
Q138 What approach can be taken to secure SNMP communications in a network prone to eavesdropping?
Using SNMPv3 with authentication and encryption
Switching to a different network protocol
Disabling SNMP on sensitive devices
Implementing physical security measures
Q139
Q139 What is the primary goal of SDN (Software-Defined Networking)?
To increase the physical infrastructure
To centralize network management and control
To encrypt network traffic
To increase network hardware
Q140
Q140 NFV (Network Functions Virtualization) primarily aims to:
Replace physical network devices with software versions
Increase the use of traditional networking hardware
Improve physical network security
Enhance wireless signal strength
Q141
Q141 In the context of IoT, what is the main function of edge computing?
To process data on the cloud exclusively
To reduce data processing latency by processing data near its source
To store large volumes of data locally
To increase data encryption
Q142
Q142 How does SDN enhance network security?
By decentralizing network control
By physically securing network devices
By enabling dynamic, centralized security policy management
By requiring additional hardware firewalls
Q143
Q143 What challenge does the IoT face regarding data privacy and security?
Limited processing power on IoT devices complicates encryption
IoT devices do not generate sensitive data
IoT devices exclusively use secure, wired connections
All IoT communications are automatically encrypted
Q144
Q144 Which technology is foundational to the deployment of NFV?
3G cellular networks
Cloud computing infrastructure
Bluetooth technology
RFID technology
Q145
Q145 How can you utilize an API to interact with an SDN controller?
By sending HTTP GET requests to the controller's IP address
By using SNMP traps
By directly accessing the controller's database
By physical console access
Q146
Q146 What command line tool can be used to simulate IoT devices for testing IoT applications?
Wireshark
Mosquitto
Docker
GNS3
Q147
Q147 Which tool is used for creating a virtualized network function in an NFV infrastructure?
OpenStack
Netcat
OpenFlow
Curl
Q148
Q148 When troubleshooting connectivity issues in an IoT network, what is a common factor to investigate?
The compatibility of IoT protocols
The strength of the Wi-Fi signal
The firmware version of IoT devices
The battery levels of IoT devices
Q149
Q149 How can latency issues in an SDN environment be identified and addressed?
By increasing the bandwidth
By updating the SDN controller software
By optimizing the control plane communication
By adding more access points
Q150
Q150 What approach is effective in managing the security of a large-scale IoT deployment?
Implementing device-level authentication and encryption
Using a single, centralized firewall
Limiting device functionality
Deploying devices without internet access
