Free Microsoft 70 642: Network Infrastructure Questions and Answers — Questions and Answers
Question 1: If you want to connect to the IPv6 internet from a server, what kind of IPv6 do you need?
- Global Address (Correct answer)
- Site-Local Address
- Link-Local Address
- Unique Local Address
Correct answer: Global Address
To connect to the public IPv6 Internet, a server requires a Global Unicast Address (GUA). GUAs are globally unique and routable across the entire IPv6 network, similar to public IPv4 addresses. Other IPv6 address types like Link-Local, Site-Local (deprecated), or Unique Local addresses are designed for local network communication and are not routable on the public Internet.
Question 2: Which DHCP option should the DHCP client select as the recommended NetBIOS name resolving technique?
- 006 DNS Servers
- 044 WINS/NBNS Servers
- 046 WINS/NBT Node Type (Correct answer)
- 003 Router
Correct answer: 046 WINS/NBT Node Type
DHCP option 046, 'WINS/NBT Node Type,' is used to configure how DHCP clients resolve NetBIOS names. This option specifies the NetBIOS over TCP/IP (NBT) node type (e.g., b-node, p-node, m-node, or h-node) that clients should use. Setting this option correctly ensures clients use the recommended method for NetBIOS name resolution, often leveraging WINS servers effectively.
Question 3: In the dialog box for configuring RIP properties, which of the following is a tab?
- Policy
- Miscellaneous
- Remote Access
- Neighbors (Correct answer)
Correct answer: Neighbors
In the Routing and Remote Access console, when configuring Routing Information Protocol (RIP) properties, the 'Neighbors' tab is available. This tab allows administrators to manually specify RIP neighbors. This is useful for controlling routing adjacencies in specific network topologies or when automatic neighbor discovery is not feasible or desired.
Question 4: What is disabled on the node when you run a PathPing or TraceRt and the hop returns three asterisks?
- ICMP (Correct answer)
- RIP
- OSPF
- TCP/IP
Correct answer: ICMP
When `PathPing` or `TraceRt` returns three asterisks (***) for a hop, it signifies that the device at that hop did not respond to the Internet Control Message Protocol (ICMP) echo requests. This typically occurs because the device's firewall or security settings are configured to block ICMP traffic. By blocking ICMP, the device prevents itself from sending back the necessary ICMP Time Exceeded or Echo Reply messages.
Question 5: You are in control of a business that operates two distinct networks in various cities. You want each office, one in Newark and one in Chicago, to be able to surf the network of the other. Additionally, you want the network's users to continue having access to the internet. How ought the DNS to be set up?
- Configure the DNS servers of each to use the same external forwarder.
- Configure the DNS servers in each to forward queries to the other.
- Use conditional forwarding to setup the parent DNS servers for each to send queries destined for the other to the DNS servers of the other. (Correct answer)
- Configure root servers for Chicago and have the DNS servers in Newark forward queries to the servers in Chicago.
Correct answer: Use conditional forwarding to setup the parent DNS servers for each to send queries destined for the other to the DNS servers of the other.
Conditional forwarding is the most effective DNS setup for this scenario. It allows DNS servers in each city to forward queries specifically for the other city's domain directly to that city's DNS servers. This ensures efficient resolution of internal queries between offices while general internet queries are handled separately, providing both inter-office connectivity and internet access.
Question 6: Which zone type is frequently employed to enable a parent zone, such as dtilearning.com, to maintain a current list of the name servers accessible in a delegated child zone, such as north.dtilearning.com?
- Forward lookup zone
- Stub zone (Correct answer)
- Secondary zone
- Primary zone
Correct answer: Stub zone
A stub zone is a copy of a zone that contains only the necessary resource records (SOA, NS, and A records) to identify the authoritative DNS servers for a delegated child zone. By creating a stub zone for `north.dtilearning.com` on the `dtilearning.com` DNS server, the parent zone automatically maintains an up-to-date list of the child zone's name servers. This ensures proper resolution and delegation without hosting the full child zone.
Question 7: Which record is attempted to be updated by DNS clients who are also DHCP clients?
- Pointer
- Both host and pointer
- Host (Correct answer)
- None
Correct answer: Host
When configured for dynamic DNS updates, DHCP clients primarily attempt to update their own Host (A or AAAA) record in the DNS server. This record maps their hostname to their newly assigned IP address, making the client resolvable by name on the network. While PTR records might also be updated, the Host record is fundamental for client name resolution.
Free Microsoft 70 642: Network Infrastructure Questions and Answers
If you want to connect to the IPv6 internet from a server, what kind of IPv6 do you need?