Software Troubleshooting Tools

What is the main function of a protocol analyzer?

Capturing and inspecting data

A command-line utility used for checking the reachability of a remote network host is called:

ping

A Linux command-line utility for displaying intermediary points (routers) the IPv4 packet is passed through on its way to another network node is known as:

traceroute

A network command-line utility in MS Windows that tracks and displays the route taken by IPv4 packets on their way to another host is called:

tracert

Which of the command-line tools listed below can be used for troubleshooting DNS-related problems on MS Windows?

nslookup

Which of the following answers refers to a command-line packet capturing utility?

tcpdump

Which of the answers listed below refers to a Linux and macOS network administration command-line utility used for DNS queries?

dig

Which netstat parameter allows displaying all active TCP connections and the TCP/UDP ports on which the computer is listening?

-a

Which of the following netstat parameters allows displaying the names of applications and executable file components that are accessing the network?

-b

What is the name of a Windows command-line utility that can be used to display TCP/IP configuration settings?

ipconfig

Which of the answers listed below refers to an ipconfig command parameter used for displaying the full TCP/IP configuration information for all adapters?

/all

Which ipconfig parameter allows displaying detailed information about the computer's network configuration?

/all

Which of the following command-line commands in MS Windows are used for resetting the DHCP configuration settings for all adapters?

ipconfig /release and ipconfig /renew

What is the name of a Linux command-line utility that can be used to display TCP/IP configuration settings?

ifconfig

The ip command in Linux is the preferred replacement for:

ifconfig

The arp (Address Resolution Protocol) command can be used to perform what kind of resolution?

IP to MAC

Which command in MS Windows displays a table consisting of IP addresses and their resolved physical addresses?

arp -a

Which of the CLI tools listed below is used for discovering hosts and services on a computer network?

Nmap

Which of the following answers refers to a vendor-neutral protocol used for network devices to advertise their identity, capabilities, and neighbors on a LAN?

LLDP (Link Layer Discovery Protocol)

Which of the answers listed below refers to a Cisco-proprietary network protocol used by Cisco devices to share information about directly connected devices, such as device identity, capabilities, and IP address information?

CDP (Cisco Discovery Protocol)

Which network discovery protocol would be the most suitable for multi-vendor networking environments?

LLDP (Link Layer Discovery Protocol)

A speed tester is a software tool used to measure the performance of a network connection, particularly in terms of bandwidth (upload and download speeds) and latency. It is crucial for diagnosing network issues such as:

Slow internet speeds, inconsistent performance, and verifying speeds provided by the ISP (Internet Service Provider)