NOS-230 Final Study Guide 2022 with complete solution LATEST UPDATE

NOS-230 Final Study Guide 2022 with complete solution LATEST UPDATE A valid reverse lookup zone consists of the network ID's octets in reverse order, with what at the end of the name? a. b. c. .arpa d. - ANS DNS clients maintain a text file called Hosts that can contain static DNS entries, within what Windows directory is this file stored? a. %systemroot%System32driversetc b. %systemroot%dnsetc c. %systemroot%System32 d. %systemroot%drivers - ANS %systemroot%System32driversetc How should an administrator test the functionality of DNS operation on a domain controller, as well as troubleshoot issues with DNS forwarders, delegation, dynamic updates, and record registration? This is not about basic DNS functions. Select one: a. Using DNS Manager b. Using nslookup c. Using dcdiag /test:dns d. Using - ANS Using dcdiag /test:dns In a zone's Properties dialog box, what option is unavailable under Dynamic updates for only standard zones? Select one: a. The Nonsecure and secure option b. The None option c. Both the Nonsecure and secure and Secure Only options d. The Secure only option - ANS The Secure only option The .com, .net, and .edu are all examples of what level of the DNS naming hierarchy? Select one: a. Subdomains b. Stub domains c. Top-level domain names d. Second-level domain names - ANS Top-level domain names The default setting for a secondary zone's refresh interval is how many minutes? Select one: a. 15 minutes b. 5 minutes c. 10 minutes d. 20 minutes - ANS 15 minutes The FQDN of a name server that has authority over a domain is noted in what type of DNS record? Select one: a. PTR b. MX c. A d. NS - ANS NS The responsible person section of an SOA record contains what information? Select one: a. The username responsible for the zone b. The SWIP account details for the zone c. The name or organization responsible for the zone d. The email address of the responsible person - ANS The email address of the responsible person What command option for the dnscmd command lists all zones on the server? Select one: a. /enumzones b. /info c. /enumrecords d. /ipvalidate - ANS /enumzones What DNS record type is used for an IPv6 host record? Select one: a. MX b. SRV c. A d. AAAA - ANS AAAA What DNS record type is used to resolve a known IP address to a hostname? Select one: a. Canonical Name b. Start of Authority Records c. Pointer Record d. Service Location - ANS Pointer Record What option is available on a Host A record to tell the system how long the record should remain in the database after it was created or last updated? Select one: a. Stale record b. Record time stamp c. Update time d. Time to live - ANS Time to live What PowerShell cmdlet can be used to create a new Active Directory integrated primary zone? Select one: a. Install-IADPzone b. Add-DnsServerPrimaryZone c. Add-ADPrimaryZone d. Install-DNSPrimaryZone - ANS Add-DnsServerPrimaryZone What RFC defines the DNS resource record types? Select one: a. RFC 1183 b. RFC 1918 c. RFC 2311 d. RFC 1100 - ANS RFC 1183 Select one: a. Canonical Name b. Start of Authority Records c. Service Location d. Pointer Record - ANS Start of Authority Records What specific term is best used to describe a computer making a DNS query? Select one: a. DNS server b. DNS helper c. DNS hostname d. DNS resolver - ANS DNS resolver What type of DNS query causes a DNS server to respond with the best information it currently has in its local database? Select one: a. Iterative query b. Local query c. Recursive query d. Extended query - ANS Iterative query What type of DNS record is used to contain an alias for another record, allowing for the use of different names for the same host? Select one: a. CNAME record b. Pointer record c. A record d. AAAA record - ANS CNAME record What type of DNS server is a DNS server to which other DNS servers send requests they can't resolve themselves? Select one: a. Authoritative server b. Forwarder server c. Authoritative server d. Caching-only server - ANS Forwarder server What type of DNS servers field DNS queries, send iterative queries to upstream DNS servers, or send requests to forwarders and then store the results? Select one: a. Authoritative server b. Caching-only server c. Forwarder server d. Authoritative server - ANS Caching-only server When a dynamic DNS record is created, what is the TTL value used for? Select one: a. To specify how long the record should remain in the DNS database b. To specify the time before the next update c. To determine how long it takes for a ping to reach the client and come back d. To determine how many hops away the updating client is - ANS To specify how long the record should remain in the DNS database When data within a zone changes, what information in the SOA record changes to reflect that the zone information should be replicated? Select one: a. Retry interval b. Minimum TTL c. Refresh interval d. Serial number - ANS Serial number Which DNS zone category contains PTR records that map IP addresses to names and is named after the IP network address of the computers whose records it contains? Select one: a. Primary zone b. Secondary zone c. Reverse lookup zone d. Forward lookup zone - ANS Reverse lookup zone Which DNS zone type contains a read/write master copy of all resource records for the zone? Select one: a. Stub zone b. Glue zone c. Secondary zone d. Primary zone - ANS Primary zone Which of the following DNS record types specifies a hostname and port number for servers that supply specific services? Select one: a. Pointer Record b. Service Location c. Start of Authority Records d. Canonical Name - ANS Service Location Which of the following options can an administrator enable to improve DNS security? Select one: a. Notify b. Do not allow dynamic updates c. Do not allow Active Directory Integrated Zones d. Allow zone transfers - ANS Do not allow dynamic updates Which of the following specifies how often a secondary DNS server attempts to renew its zone information? Select one: a. Refresh interval b. Set interval c. Update interval d. Retry interval - ANS Refresh interval Which type of resource record addition allows computers to register or update their own DNS records, or DHCP can update DNS on behalf of the clients when the clients lease a new IP address? Select one: a. Secondary DNS b. Primary DNS c. Dynamic DNS d. Static DNS - ANS Dynamic DNS Which Windows command line utility below can be used to check for resource records on a server, verify delegations, verify resource records needed for AD replication, and perform e-mail connectivity tests? Select one: a. dnslint b. nslookup c. dig d. dcdiag - ANS dnslint Who is responsible for the management of the Internet root servers? Select one: a. Institute of Electrical and Electronics Engineers (IEEE) b. Internet Assigned Numbers Authority (IANA) c. American Registry for Internet Numbers (ARIN) d. International Standards Organization (ISO) - ANS Internet Assigned Numbers Au