70-413 Exam DNS and DHCP Infrastructure 2 — Questions and Answers
Question 1: Which DHCP failover mode designates one server as active and one as standby, with the standby taking over automatically if the active server fails?
- Load Balance mode
- Hot Standby mode (Correct answer)
- Active-Active mode
- Round Robin mode
Correct answer: Hot Standby mode
Hot Standby mode keeps one DHCP server active while the other remains ready to take over immediately upon detecting a failure of the active server.
Question 2: Which DNS zone type contains only SOA, NS, and glue A records sufficient to locate the authoritative name servers for a zone?
- Secondary Zone
- Stub Zone (Correct answer)
- Forward Lookup Zone
- Conditional Forwarder
Correct answer: Stub Zone
A stub zone contains the minimal records needed (SOA, NS, and associated A records) to find the authoritative servers for a zone without hosting all records.
Question 3: What Windows Server DNS feature enables administrators to control DNS responses based on client subnet, allowing traffic management by network location?
- Round Robin DNS
- DNS Policies (Correct answer)
- GlobalNames Zone
- DNS Scavenging
Correct answer: DNS Policies
DNS Policies allow administrators to define rules that return different DNS responses based on client subnet, time of day, or query type.
Question 4: Which DHCP option provides clients with the DNS domain name suffix to append during unqualified DNS name resolution?
- Option 003
- Option 006
- Option 015 (Correct answer)
- Option 044
Correct answer: Option 015
DHCP Option 015 (DNS Domain Name) provides the domain suffix that clients use when resolving unqualified hostnames via DNS suffix search.
Question 5: What Windows Server DNS process automatically removes resource records that have not been refreshed within the configured no-refresh and refresh intervals?
- Dynamic DNS
- DNS Scavenging (Correct answer)
- Zone Transfer
- DNS Aging
Correct answer: DNS Scavenging
DNS Scavenging deletes stale resource records whose timestamps exceed the sum of the no-refresh and refresh intervals, keeping zones clean.
Question 6: Which type of DNS query requires the DNS server to provide a complete final answer and not merely refer the client to another server?
- Recursive query (Correct answer)
- Iterative query
- Inverse query
- Non-recursive query
Correct answer: Recursive query
In a recursive query, the DNS server takes full responsibility for resolving the name and must return either the answer or an error — not a referral.
70-413 Exam DNS and DHCP Infrastructure 2
Which DHCP failover mode designates one server as active and one as standby, with the standby taking over automatically if the active server fails?