Network Monitoring and Troubleshooting MCQs

What is the primary purpose of network monitoring? a) To secure the network against cyber attacks b) To optimize network performance and availability c) To update network hardware regularly d) To replace outdated network protocols Answer: b) To optimize network performance and availability Which of the following is a passive network monitoring technique? a) SNMP (Simple Network Management Protocol) b) Ping c) Packet sniffing d) Traceroute Answer: c) Packet sniffing What does SNMP stand for in network monitoring? a) Simple Network Monitoring Protocol b) Secure Network Management Protocol c) System Network Monitoring Platform d) Service Node Management Protocol Answer: a) Simple Network Monitoring Protocol Which network monitoring tool provides real-time graphical representation of network performance metrics? a) Wireshark b) Nagios c) Cacti d) SNMP Answer: c) Cacti What is the purpose of a ping command in network troubleshooting? a) To determine the IP address of a host b) To measure the round-trip time for packets to reach a host and return c) To capture network packets for analysis d) To configure network devices remotely Answer: b) To measure the round-trip time for packets to reach a host and return Which network troubleshooting tool helps identify the path packets take from a source to a destination? a) Ping b) Traceroute c) SNMP d) Syslog Answer: b) Traceroute What is a characteristic of NetFlow in network monitoring? a) It analyzes packet contents for security threats b) It monitors bandwidth usage based on IP flow information c) It encrypts network traffic for secure transmission d) It configures firewall rules automatically Answer: b) It monitors bandwidth usage based on IP flow information Which network monitoring technique helps identify unauthorized devices connected to a network? a) SNMP polling b) Port scanning c) Packet sniffing d) Ping sweep Answer: b) Port scanning Which network troubleshooting command provides detailed information about the route packets take through the network? a) nslookup b) netstat c) traceroute d) arp Answer: c) traceroute What does the ‘netstat’ command display in network troubleshooting? a) Current network connections and listening ports b) DNS server configuration c) IP address of the default gateway d) Network interface configuration Answer: a) Current network connections and listening ports Which network monitoring protocol uses traps to notify the management station of significant events? a) ICMP b) SNMP c) TCP d) UDP Answer: b) SNMP What is the purpose of a syslog server in network monitoring? a) To manage network routing tables b) To capture and store log messages from network devices c) To optimize network bandwidth usage d) To authenticate users accessing the network Answer: b) To capture and store log messages from network devices Which network monitoring technique involves examining the contents of data packets transmitted over a network? a) SNMP polling b) NetFlow analysis c) Packet sniffing d) Traceroute Answer: c) Packet sniffing What does the ‘arp’ command display in network troubleshooting? a) Routing table entries b) DNS server configuration c) IP address to MAC address mappings d) Network interface configuration Answer: c) IP address to MAC address mappings Which network monitoring tool is used to monitor and manage bandwidth usage in real-time? a) Wireshark b) Cacti c) Nagios d) NetFlow Analyzer Answer: d) NetFlow Analyzer What is a common use of a network protocol analyzer such as Wireshark? a) Monitoring CPU usage on network devices b) Capturing and analyzing network packets c) Managing network routing protocols d) Configuring firewall rules Answer: b) Capturing and analyzing network packets Which network troubleshooting tool provides information about domain name resolution? a) nslookup b) netstat c) traceroute d) ping Answer: a) nslookup What is the purpose of a ping sweep in network troubleshooting? a) To identify active IP addresses within a range b) To test the round-trip time for packets to reach a destination c) To monitor bandwidth usage in real-time d) To analyze network traffic patterns Answer: a) To identify active IP addresses within a range Which network troubleshooting tool displays the status of network interfaces and their configurations? a) traceroute b) netstat c) arp d) ifconfig/ipconfig Answer: d) ifconfig/ipconfig What is the purpose of a ping flood attack in network security? a) To capture sensitive data transmitted over the network b) To overwhelm a network with excessive ping requests c) To encrypt network traffic for secure transmission d) To bypass firewall restrictions Answer: b) To overwhelm a network with excessive ping requests Which network troubleshooting command provides detailed information about network interfaces and their configurations? a) traceroute b) netstat c) arp d) ifconfig/ipconfig Answer: d) ifconfig/ipconfig What does the ‘dig’ command display in network troubleshooting? a) Network interface configurations b) DNS server configuration c) IP address to MAC address mappings d) Routing table entries Answer: b) DNS server configuration Which network monitoring technique is used to measure and analyze network traffic patterns over time? a) SNMP polling b) Packet sniffing c) NetFlow analysis d) Port scanning Answer: c) NetFlow analysis What does a ping of death attack exploit in network vulnerabilities? a) Weak encryption protocols b) Unauthorized access points c) Buffer overflow in network protocols d) Firewall misconfigurations Answer: c) Buffer overflow in network protocols Which network troubleshooting command displays the MAC address of a network device? a) ifconfig/ipconfig b) netstat c) arp d) traceroute Answer: c) arp What is the primary purpose of a ping sweep in network troubleshooting? a) To identify active IP addresses within a range b) To measure network latency c) To analyze DNS server response times d) To capture network packets Answer: a) To identify active IP addresses within a range Which network monitoring tool is used for automated monitoring of network devices and services? a) Wireshark b) Nagios c) Cacti d) SNMP Answer: b) Nagios What does the ‘iftop’ command display in network troubleshooting? a) Real-time bandwidth usage b) Network interface configurations c) DNS server configuration d) Routing table entries Answer: a) Real-time bandwidth usage Which network troubleshooting tool is used to resolve DNS queries and display DNS server configurations? a) dig b) netstat c) ping d) arp Answer: a) dig What is the purpose of a ping sweep in network security assessments? a) To identify open ports on a network device b) To identify potential security vulnerabilities c) To measure network latency d) To capture network packets Answer: b) To identify potential security vulnerabilities Which network troubleshooting tool is used to display active network connections and their corresponding processes? a) ifconfig/ipconfig b) netstat c) traceroute d) ping Answer: b) netstat What does the ‘nslookup’ command display in network troubleshooting? a) Real-time bandwidth usage b) Network interface configurations c) DNS server configuration d) Routing table entries Answer: c) DNS server configuration Which network monitoring technique provides information about network traffic patterns based on IP flow data? a) SNMP polling b) Packet sniffing c) NetFlow analysis d) Traceroute Answer: c) NetFlow analysis What is the purpose of an ICMP echo request in network troubleshooting? a) To display network interface configurations b) To test connectivity between devices c) To analyze DNS server response times d) To capture network packets Answer: b) To test connectivity between devices Which network monitoring tool is used to visualize network performance metrics such as bandwidth utilization and latency? a) Wireshark b) Cacti c) Nagios d) SNMP Answer: b) Cacti What does the ‘arp’ command display in network troubleshooting? a) Real-time bandwidth usage b) Network interface configurations c) IP address to MAC address mappings d) Routing table entries Answer: c) IP address to MAC address mappings Which network troubleshooting command provides information about the route packets take through the network? a) nslookup b) netstat c) traceroute d) ping Answer: c) traceroute What is the purpose of a TCP SYN flood attack in network security? a) To capture sensitive data transmitted over the network b) To overload a server with excessive TCP connection requests c) To encrypt network traffic for secure transmission d) To bypass firewall restrictions Answer: b) To overload a server with excessive TCP connection requests Which network monitoring tool is used to capture and analyze network packets in real-time? a) Wireshark b) Cacti c) Nagios d) SNMP Answer: a) Wireshark What does the ‘netstat’ command display in network troubleshooting? a) Real-time bandwidth usage b) Network interface configurations c) Active network connections and listening ports d) DNS server configuration Answer: c) Active network connections and listening ports Which network monitoring protocol uses port 161 and 162 to send and receive management information? a) ICMP b) SNMP c) TCP d) UDP Answer: b) SNMP What is the purpose of a DNS query in network troubleshooting? a) To measure network latency b) To test connectivity between devices c) To resolve domain names to IP addresses d) To capture network packets Answer: c) To resolve domain names to IP addresses Which network troubleshooting command displays the status of network interfaces and their configurations? a) traceroute b) netstat c) arp d) ifconfig/ipconfig Answer: d) ifconfig/ipconfig What is the primary purpose of a ping sweep in network troubleshooting? a) To identify active IP addresses within a range b) To measure network latency c) To analyze DNS server response times d) To capture network packets Answer: a) To identify active IP addresses within a range Which network troubleshooting tool displays the MAC address of a network device? a) ifconfig/ipconfig b) netstat c) arp d) traceroute Answer: c) arp What is the purpose of a ping sweep in network security assessments? a) To identify open ports on a network device b) To identify potential security vulnerabilities c) To measure network latency d) To capture network packets Answer: b) To identify potential security vulnerabilities Which network troubleshooting tool is used to display active network connections and their corresponding processes? a) ifconfig/ipconfig b) netstat c) traceroute d) ping Answer: b) netstat What does the ‘nslookup’ command display in network troubleshooting? a) Real-time bandwidth usage b) Network interface configurations c) DNS server configuration d) Routing table entries Answer: c) DNS server configuration Which network monitoring technique provides information about network traffic patterns based on IP flow data? a) SNMP polling b) Packet sniffing c) NetFlow analysis d) Traceroute Answer: c) NetFlow analysis What is the purpose of an ICMP echo request in network troubleshooting? a) To display network interface configurations b) To test connectivity between devices c) To analyze DNS server response times d) To capture network packets Answer: b) To test connectivity between devices