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54 Cards in this Set
- Front
- Back
What is the primary method for transmitting IPv6 traffic over an IPv4 network? |
Tunneling |
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What IPv6 type is the equivalent to a private IPv4 address? |
Unique local unicast address |
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What is the name of the automatic tunneling protocol used by Windows OS that are located behind NAT routers? |
Teredo |
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Which type of IP address must a system have to be visible from the internet? |
Registered |
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What subnet mask value would you used when configuring a TCP/IP client with an IPv4 address on the 172.16.32.0/19 network? |
255.255.224.0 |
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What are the 3 components of DHCP? |
DHCP service DHCP client DHCP communications protocol |
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What are the three different IP address allocation methods of DHCP? |
Dynamic Automatic Manual |
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DHCP server assigns an IP address to a client from a scope for a specified length of time. Is what type of allocation method? |
Dynamic |
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DHCP server permanently assigns an IP address to a client from a scope. Is what type of allocation method? |
Automatic |
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DHCP server permanently assigns a specific IP address to a specific client on the network. Is what type of allocation method? |
Manual |
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What is the sequence for the assigning of an address from DHCP? |
Discover - client discovers DHCP Offer - DHCP sends an offer Request - Client requests the server Acknowledge - Server sends acknowledgement packet with all necessary info |
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What is the renewal time value or T1 value? |
When the DHCP client reaches the 50% point of the lease's duration. |
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What is the rebinding time value or T2 value? |
When the DHCP client reaches 87.5% of the lease's duration. |
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What is a scope? |
A range of IP addresses on a particular subnet that can be allocated by the DHCP server |
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What is a reservation? |
A set of IP addresses that the DHCP server cannot assign |
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What is a DHCP relay agent? |
It works as a middle man enabling 1 DHCP server to allocate IP addresses to networks on different subnets. |
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What term best describes the component that enables DHCP clients to communicate with DHCP servers on other subnets? |
Relay Agent |
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What message types are used during successful DHCP address assignment |
DHCPDISCOVER DHCPOFFER DHCPREQUEST DHCPACK |
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What DHCP address allocation type is the equivalent of a reservation in Windows Server 2012 R2? |
Manual allocation |
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Which network components are typically capable of functioning as DHCP relay agents? |
Routers Windows Server 2012 R2 Computers |
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What TCP/IP parameters is typically deployed as a scope option in DHCP? |
Default Gateway |
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What is a DNS resolver? |
a client program that generates DNS queries and sends them to a DNS server for fulfillment |
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The process by which one DNS server sends a name resolution request to another DNS server is called what? |
A Referral |
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What are the two types of name resolution requests? |
Recursive query Iterative query |
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DNS server receiving the name resolution request takes full responsibility for resolving the name including sending referrals to other DNS servers until it has the right answer. Is what type of query? |
Recursive |
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DNS server receiving the name resolution request immediately responds with the best information it possesses at the time. Is what type of query? |
Iterative |
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What is a DNS forwarder? |
Other DNS servers in the network send their requests to the forwarder who then sends out queries on their behalf over the internet, and sends back the information it receives. |
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What is Reverse name resolution? |
When a computer needs to convert an IP address into a DNS name. |
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What is a DNS Zone? |
An administrative entity to represent a discrete portion of the DNS namespace. |
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What are the 3 zone types? |
Primary Zone Secondary Zone Stub Zone |
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Zone with read/write permissions containing the master copy of the zone database. |
Primary |
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Zone that is the duplicate of a primary zone with read only permissions. |
Secondary |
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Zone that is a duplicate of a primary zone and contains the key resource records that identify the authoritative servers for the zone. Forwards or Refers requests. |
Stub |
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What are the 7 resource records? |
SOA, NS, A, AAAA, PTR, CNAME, MX |
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What is SOA? |
Start of Authority Server is the best authoritative source for data concerning the zone. Only 1 SOA record may exist in a zone. |
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What is NS? |
Identifies a DNS server |
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What is A and AAAA? |
name-to-address mapping IPv4 (A) & IPv6 (AAAA) |
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What is PTR? |
Pointer Address-to-name mapping supplying a DNS name for a specific address. used for reverse lookups only. |
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What is CNAME? |
Canonical name Creates an alias that points to the canonical or 'real' name of a host identified by an A record |
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What is MX? |
Mail Exchanger Identifies a system that will direct email traffic |
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What are Root Hints? |
preconfigured 'hints' in the DNS server containing the names/addresses of multiple root name servers. |
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Which resource record type contains the information a DNS server needs to perform a reverse name lookup? |
PTR |
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What would be the correct FQDN for a resource record in a reverse lookup zone if the computer's ip address is 10.75.143.88? |
88.143.75.10.in-addr.arpa |
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Which is not one of the elements of DNS? Resolvers Relay Agents Name Servers Namespace |
Relay Agents |
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In what DNS transactions does the querying system generate a recursive query? |
A client sends the server name www.example.com to its designated DNS server for resolution |
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What contains the controls used to modify DNS name caching? |
The Start of Authority (SOA) tab of a zone's Property sheet |
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Which TCP/IP protocol supports Dynamic DNS (DDNS)? |
DHCP |
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Which zone type supports hostname to IP address translation? |
Forward lookup zone |
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Which DHCP failover configuration is active-passive? |
Hot standby |
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DHCP supports the reservation of an IP address based on which value? |
MAC address |
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What is typically configured as a DHCP scope option? |
Default Gateway |
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Which type of DNS zone did we implement in lab? |
Active Directory -integrated |
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Which took can be used to test if a DNS server is answering queries properly? |
nslookup |
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What is the DNS command to purge the local DNS cache? |
ipconfig /flushdns |