Unit 3: Addressing on Networks

Which of the following IPv6 addresses represents a global unicast address? FE80::10 2000::/3 FC00::/7 FD00::/8

2000::/3

What decimal number corresponds to the binary number 1 1 1 1 1 1 1 1?

255

In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses?

AAAA

Suppose you send data to the 11111111 11111111 11111111 11111111 IP address on an IPv4 network. To which device(s) are you transmitting?

All devices on your local network

An IPv6 address consists of 128 bits that are written as 10 blocks of hexadecimal numbers separated by colons. True / False

False

ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs. True / False

False

The 1024 - 65535 range of ports is also known as the "well-known" range. True / False

False

The FTP protocol utilizes UDP, while TFTP uses TCP for data transmission. True / False

False

What statement regarding the Server Message Block protocol is accurate? 1. It is a simple protocol used to synchronize block messages written to iSCSI drives on a network. 2.It is used by Windows and UNIX-based operating systems to share files. 3. It is a signaling protocol used to make a connection between hosts prior to data transfer. 4. It is a protocol used for accessing network-based LDAP directories.

It is used by Windows and UNIX-based operating systems to share files.

What is the ARPA domain suffix utilized for?

It is used for reverse DNS queries, and holds PTR records.

Which type of DNS record identifies an email server?

MX record

Which part of a MAC address is unique to each manufacturer?

OUI (organizationally unique identifier)

In the DNS hierarchy, where is information about how to find the top-level domain servers held?

On the DNS root servers

What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network?

Ping

If a host's IPv6 address contains the network adapter's MAC address within the last 64 bits of the IPv6 address, what standard is being used?

EUI-64

What does the MX record do in a forward DNS zone?

It identifies the e-mail server to be used for e-mail traffic for the domain.

With a FQDN of ftp1.dallas.mycompany.com, what part is the domain name?

mycompany.com

What command can you utilize to display TCP/IP configuration information for each network adapter installed?

ipconfig /all

If you are connected to a network that uses DHCP, and you need to terminate your Windows workstation's DHCP lease, which command would you use?

ipconfig /release

What type of IPv6 address is fe80::8cf1:2c42:ffde:da1c?

link local address

Which of the following is NOT a range of IP addresses recommended for use in private networks? 10.0.0.0 to10.255.255.255 172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255 127.0.0.0 to 127.255.255.255

127.0.0.0 to 127.255.255.255

Your supervisor has asked you to configure a new prototype network with a dual stack configuration. What does this mean?

Both IPv4 and IPv6 protocols will be used on the network.

When your computer first joins an IPv6 network, what is the prefix of the IPv6 address the computer first configures for itself?

FE80::/10

DNS follows a centralized database model, allowing for easier management of DNS records. True / False

False

At the Transport layer of the OSI, what is used to find and communicate with a particular application running on a host?

Port Numbers

Which computers are the highest authorities in the Domain Name System hierarchy?

Root servers

You are troubleshooting a network issue on a client computer and discover that the network card has an IP address of 169.254.196.200. What does this mean?

The computer is configured to use DHCP, but was unable to lease an address

How do routers create a broadcast domain boundary?

They do not forward broadcast traffic

A hexadecimal number is a number written in the base 16 number system. True / False

True

At the root level of the DNS hierarchical structure, 13 clusters of root servers hold information used to locate TLD servers. True / False

True

Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access. True / False

True

UDP port 123 is utilized by the Network Time Protocol service. True / False

True

In the classful addressing scheme, what range of network addresses is considered a Class B?

128.0.x.y to 191.255.x.y

Which of the following IP addresses would be a loopback IP address? 169.254.0.1 192.168.1.1 224.0.0.1 127.0.0.1

127.0.0.1

What is by far the most popular DNS server software available?

BIND

What type of device does a computer turn to first when attempting to make contact with a host with a known IP address on another network?

Default Gateway

Which protocol is used as a signaling protocol for the initial connection between hosts, but does not participate in data transfer during the session?

SIP

How can you determine the manufacturer of a NIC card based on the MAC address? The first 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer. The last 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer. The middle 24 bits, known as the Organization Universal Identifier, identify the manufacturer. The first 12 bits and last 12 bits combined are known as the Organizationally Unique Identifier.

The first 24 bits, known as the Organizationally Unique Identifier, identify the manufacturer.

What part of a MAC address serves as the extension identifier, or device ID?

The last 24 bits of the MAC address.

You have just brought online a new secondary DNS server and notice your network-monitoring software reports a significant increase in network traffic. Which two hosts on your network are likely to be causing the increased traffic and why?

The secondary and primary DNS servers, because the secondary server is requesting zone transfers from the primary server

When using IPv6, two or more nodes on the same link are said to be neighbors. True / False

True

What text editor can be used on Linux to view and edit the contents of a configuration file?

Vim

Which of these commands is available only in Linux? ipconfig nslookup dig ping

dig

You are troubleshooting a DNS issue on a Linux system, and need to test the resolution of your domain mycompany.com MX record using Google's DNS server with the IP address of 8.8.8.8. What dig command will accomplish this?

dig @8.8.8.8 mycompany.com MX

On a Linux-based system, what command can be used to display TCP/IP information associated with every interface on the system?

ifconfig -a

A Windows computer on your network is having issues resolving queries for a specific domain, but not other domains. Other computers on the same network resolve the name just fine. What command can you issue that might fix the problem?

ipconfig /flushdns

What command can be used to check a domain computer's time source from a Command Prompt window?

w32tm /query /source