NETWORKING + MOD-3

Which IPv6 address delivers packets to all nodes in a targeted, multicast group?

multicast address

What is the combination of a host's IP address and a process's TCP or UDP port, separated by a colon called?

socket

Landers is facing issues with his networked printer. Initially, it works properly, but after a while, users are unable to print. They receive an error message indicating that the printer cannot be found.

How can Landers prevent this issue from occurring in the future?

Landers should use a persistent or static IP address.

Which utility is used by default to perform a DNS lookup in Ubuntu?

DIG

What information does the CNAME record hold in a DNS resource record?

holds alternative names for a host, such as blog.mycompany.com or shop.mycompany.com

What does a switch learn when it stores a device's MAC address in its MAC address table?

Switches use MAC addresses to identify devices on the local area network.

To see an abbreviated summary of configuration information, what tool is used?

ipconfig

Jessie wants to check the status of all network adapters on a host. Which switch will they use with ipconfig?

/all

Which address can be routed on the Internet and is similar to public IPv4 addresses?

Most begin with the prefix 2000::/3.

global address

10. What is the one command that is common to Windows, UNIX, and Linux systems?

hostname

11. Pacheco is setting up a new router for his network. The router will also work as the DHCP server. Normally, most routers use a Class C block of IP addresses for devices on a network, as most networks do not have more than 254 devices connected to them.

However, Pacheco wants to limit the amount of IP addresses available to the network without the use of CIDR notation. Thus, he decides to define a specific range of IP addresses for the router to use.

What is the defined range of IP addresses called? Choose all that apply.

DHCP pool

DHCP scope

What is the most popular DNS server software on the market today?

BIND (Berkeley Internet Name Domain)

Delilah is experiencing difficulty with one of the workstations on her network. Although the workstation has connectivity with other devices on the network and the Internet, most devices on the network are unable to detect it.

How can this issue be resolved?

change subnet mask

The MAC (Media Access Control) address is on the physical layer (layer 1) of the OSI Model. It is embedded in every NIC and is assumed to be unique to that NIC.

FALSE

In order for an application or service to receive data, a port number must be assigned to it.

What is it?

process

When working on a UNIX/Linux device and needing to display basic TCP/IP information, which commands can be used? Choose all that apply.

ip

ifconfig

What is the reason for pinging the IP address 127.0.0.1? Choose all that apply.

Check to see if TCP/IP services are running on the host.

Check to see if the NIC in the host is working.

What is the purpose of ping localhost?

It is another way of pinging your loopback address.

Which IPv6 address identifies multiple destinations, with packets delivered to the closest destination?

anycast address

Gale is using Wireshark to inspect their network and has identified an IP address of 192.168.1.10:8080.

What does this address signify?

The host with that address is using its web browser, and the network is utilizing PAT (Port Address Translation).

Jill was conducting her weekly network check when she observed an unfamiliar IP address. She resolved to investigate the origin of the IP address.

Which network tool would be most suitable for her investigation on a Windows network?

nslookup

Jirair wants to display all IP addresses associated with a Linux device. He types "Ip address show" and gets the message "Ip: command not found." What is the reason for this response?

Linux/UNIX commands are case sensitive.

23. Alice worked with both Linux and Windows environments and required help with TCP/IP settings. What commands should she use to obtain help documentation? Choose all that apply.

ipconfig /?

man ifconfig

Garry recently upgraded to Windows Server 2022 for his small business. Like many small businesses, he was using outdated versions until now. During his exploration, he came across a new feature called DNS server, which is a built-in DNS service that works in conjunction with Active Directory Services.

In the past, he needed two DNS servers-one for internal clients and one for external clients. However, now he can handle both types of clients with a single DNS server.

What is this configuration known as? Choose all that apply.

split-horizon

split-brain

Ifconfig has been deprecated in many Linux distros. What does deprecate mean in this instance?

is not installed by default

Port numbers range from 0 to 65535 and are categorized by IANA into three types.

What is the port range called ranging from 1024 to 49151 and can be used temporarily by processes for nonstandard assignments to increase security?

registered ports

Which DNS server is contacted by clients, both local and over the Internet, to resolve DNS queries for the organization's domains?

primary DNS server

IPv6 is not the protocol used most for communications over the Internet.

TRUE

Port numbers range from 0 to 65535 and are categorized by IANA into three types:

What is the port range called ranging from 0 to 1023 and is assigned by IANA to widely used and well-known utilities and applications, such as SSH, Telnet, FTP, and HTTP?

well-known ports

There are several computers on the network that are not keeping time properly. Since it is more than one, it is most likely that it isn't the CMOS battery. So going from the simplest issue to the more complex, in what order should you try to resolve the issue?

1. Trying changing to a different NTP server in case there is a network bottleneck.

2. Check to make sure NTP port 123 is open on any relevant firewalls.

3. Confirm the system is configured to set its time from a valid NTP server.

2,3,1

Aloise is experiencing network issues. It appears that a workstation is showing an error message upon booting up, indicating that the IP address is already in use.

What can be the issue? Choose all that apply.

Two workstations have the same static IP address.

One IP address was not reserved by DHCP.

Jaklyn attempted to access a website but was unsuccessful. Even after trying the website's name, the website couldn't be found. However, when Jaklyn used the IP address, the website was accessible.

What could be the reason that a website can be accessed using an IP address but not its name?

The DNS servers were offline.

Roger is troubleshooting a computer that cannot connect to the Internet, even though the IP and subnet mask are correct.

What could be the issue?

incorrect default gateway IP address

Madian is having trouble with a computer communicating on the network. So, they check the NIC and the IP address to determine if there is an issue. Assuming the NIC is working properly, and the IP address is accurate, why does the computer not communicate with the rest of the network?

The subnet mask is not correct for this network.

What type of address is used only at the network layer for routing purposes?

IP address

DNS servers can coexist on the same machine depending on the needs of the network.

TRUE (DNS)

What command is used to elevate privileges in Linux?

sudo

Garrett is a network administrator for a business that has 200 employees with approximately thirty employees offsite at any given time.

Lately, Garrett has noticed that some employees are having trouble logging into the network, particularly during the later part of the day when more people are trying to log in. Garrett is working with a class C address scheme.

What may be causing this problem? Choose all that apply.

DHCP pool exhaustion

leases are set too long

Patty was having an issue with one of her computers at the office. She was unable to access the Internet despite having a correct DNS and static IP set up on the workstation.

What could be causing the issue?

Default gateway was not set.