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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

What IPv6 type is the equivalent to a private IPv4 address?

Unique local unicast address

What is the name of the automatic tunneling protocol used by Windows OS that are located behind NAT routers?

Teredo

Which type of IP address must a system have to be visible from the internet?

Registered

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

What are the 3 components of DHCP?

DHCP service


DHCP client


DHCP communications protocol

What are the three different IP address allocation methods of DHCP?

Dynamic


Automatic


Manual

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

DHCP server permanently assigns an IP address to a client from a scope.


Is what type of allocation method?

Automatic

DHCP server permanently assigns a specific IP address to a specific client on the network.


Is what type of allocation method?

Manual

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

What is the renewal time value or T1 value?

When the DHCP client reaches the 50% point of the lease's duration.

What is the rebinding time value or T2 value?

When the DHCP client reaches 87.5% of the lease's duration.

What is a scope?

A range of IP addresses on a particular subnet that can be allocated by the DHCP server

What is a reservation?

A set of IP addresses that the DHCP server cannot assign

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.

What term best describes the component that enables DHCP clients to communicate with DHCP servers on other subnets?

Relay Agent

What message types are used during successful DHCP address assignment

DHCPDISCOVER


DHCPOFFER


DHCPREQUEST


DHCPACK

What DHCP address allocation type is the equivalent of a reservation in Windows Server 2012 R2?

Manual allocation

Which network components are typically capable of functioning as DHCP relay agents?

Routers


Windows Server 2012 R2 Computers

What TCP/IP parameters is typically deployed as a scope option in DHCP?

Default Gateway

What is a DNS resolver?

a client program that generates DNS queries and sends them to a DNS server for fulfillment

The process by which one DNS server sends a name resolution request to another DNS server is called what?

A Referral

What are the two types of name resolution requests?

Recursive query


Iterative query

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

DNS server receiving the name resolution request immediately responds with the best information it possesses at the time.


Is what type of query?

Iterative

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.

What is Reverse name resolution?

When a computer needs to convert an IP address into a DNS name.

What is a DNS Zone?

An administrative entity to represent a discrete portion of the DNS namespace.

What are the 3 zone types?

Primary Zone


Secondary Zone


Stub Zone

Zone with read/write permissions containing the master copy of the zone database.

Primary

Zone that is the duplicate of a primary zone with read only permissions.

Secondary



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

What are the 7 resource records?

SOA, NS, A, AAAA, PTR, CNAME, MX

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.

What is NS?

Identifies a DNS server

What is A and AAAA?

name-to-address mapping IPv4 (A) & IPv6 (AAAA)

What is PTR?

Pointer


Address-to-name mapping supplying a DNS name for a specific address. used for reverse lookups only.

What is CNAME?

Canonical name


Creates an alias that points to the canonical or 'real' name of a host identified by an A record

What is MX?

Mail Exchanger


Identifies a system that will direct email traffic

What are Root Hints?

preconfigured 'hints' in the DNS server containing the names/addresses of multiple root name servers.

Which resource record type contains the information a DNS server needs to perform a reverse name lookup?

PTR

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

Which is not one of the elements of DNS?


Resolvers


Relay Agents


Name Servers


Namespace

Relay Agents

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

What contains the controls used to modify DNS name caching?

The Start of Authority (SOA) tab of a zone's Property sheet

Which TCP/IP protocol supports Dynamic DNS (DDNS)?

DHCP

Which zone type supports hostname to IP address translation?

Forward lookup zone

Which DHCP failover configuration is active-passive?

Hot standby

DHCP supports the reservation of an IP address based on which value?

MAC address

What is typically configured as a DHCP scope option?

Default Gateway

Which type of DNS zone did we implement in lab?

Active Directory -integrated

Which took can be used to test if a DNS server is answering queries properly?

nslookup

What is the DNS command to purge the local DNS cache?

ipconfig /flushdns