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A hexadecimal number is a number written in the base 16 number system. |
True |
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DNS follows a centralized database model, allowing for easier management of DNS records. |
False |
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ICANN is responsible for restrictions on use of the .com, .org, and .net TLDs |
False |
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Each organization that provides host services on the public Internet is responsible for providing and maintaining DNS authoritative servers for public access. |
True |
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An IPv6 address consists of 128 bits that are written as 10 blocks of hexadecimal numbers separated by colons. |
False |
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At the root level of the DNS hierarchical structure, 13 clusters of root servers hold information used to locate TLD servers. |
True |
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The 1024 – 65535 range of ports is also known as the "well-known" range. |
False |
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UDP port 123 is utilized by the Network Time Protocol service. |
True |
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When using IPv6, two or more nodes on the same link are said to be neighbors. |
True |
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The FTP protocol utilizes UDP, while TFTP uses TCP for data transmission |
False |
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At the Transport layer of the OSI, what is used to find and communicate with a particular application running on a host? |
Port numbers |
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With a FQDN of ftp1.dallas.mycompany.com, what part is the domain name? |
mycompany.com |
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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. |
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What command can you utilize to display TCP/IP configuration information for each network adapter installed? |
ipconfig /all |
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Which of the following IP addresses would be a loopback IP address? |
127.0.0.1 |
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What text editor can be used on Linux to view and edit the contents of a configuration file? |
Vim |
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On a Linux-based system, what command can be used to display TCP/IP information associated with every interface on the system? |
ifconfig -a |
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Which of the following IPv6 addresses represents a global unicast address? |
2000::/3 |
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Which of the following protocols is used as a signaling protocol for the initial connection between hosts, but does not participate in data transfer during the session? |
SIP |
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What is by far the most popular DNS server software available? |
BIND |
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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. |
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What utility is used to verify that TCP/IP installed, bound to the NIC, configured correctly, and communicating with the network? |
Ping |
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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. |
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What part of a MAC address serves as the extension identifier, or device ID? |
The last 24 bits of the MAC address. |
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In the classful addressing scheme, what range of network addresses is considered a Class B? |
128.0.x.y to 191.255.x.y |
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How do routers create a broadcast domain boundary? |
They do not forward broadcast traffic. |
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Which of the following is NOT a range of IP addresses recommended for use in private networks? |
127.0.0.0 through 127.255.255.255 |
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When using DHCP for IPv6 (i.e. DHCPv6), what port do clients receive responses on? |
Port 547 |
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What type of IPv6 address is fe80::8cf1:2c42:ffde:da1c? |
Multicast address |
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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 |
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Encrypted control of remote computers using the RDP protocol is accomplished using what port number? |
TCP 3389 |
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What statement regarding the Server Message Block protocol is accurate? |
It is used by Windows and UNIX-based operating systems to share files. |
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What is the ARPA domain suffix utilized for? |
It is used for reverse DNS queries, and holds PTR records. |
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In a DNS zone, what type of record holds the name-to-address mapping for IPv6 addresses? |
AAAA record |
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You are setting up a DNS zone and have been asked to create SPF and DKIM records. What type of DNS record will hold this information? |
TXT record |
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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. |
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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 query 8.8.8.8 domain mycompany.com type mx |
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What command can be used to check a domain computer’s time source from a Command Prompt window? |
w32tm /query /source |
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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 |
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In the DNS hierarchy, where is information about how to find the top-level domain servers held? |
On the DNS root servers. |
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