Network Implementation

Match each enterprise address translation requirement or scenario on the left with the correct NAT/PAT implementation method or routing behavior on the right.

A network administrator is attempting to perform a manual zone transfer from an authoritative internal DNS server at $192.168.10.5$ for the domain $internal.corp.com$. While standard host resolution queries function normally, the zone transfer fails as shown in the command output below:

text
$ dig @192.168.10.5 internal.corp.com AXFR
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached

Which of the following firewall configuration changes is required to resolve this DNS operational failure?

An enterprise network implements Rapid Spanning Tree Protocol (IEEE 802.1w) across its access switches. Switch-A is elected as the Root Bridge. Switch-B is connected directly to Switch-A using two parallel 1 Gbps Ethernet links: Link 1 connects Switch-A interface GigabitEthernet0/1 to Switch-B interface GigabitEthernet0/1, while Link 2 connects Switch-A interface GigabitEthernet0/2 to Switch-B interface GigabitEthernet0/2. All link speeds are identical, and all port priorities remain at default values ($128$). Which port role and operational state will Switch-B assign to its GigabitEthernet0/2 interface?

A network administrator is designing a dynamic routing strategy for an enterprise infrastructure that uses both OSPF and EIGRP. Which of the following statements regarding routing metrics, administrative distance, and protocol operations are correct? (Select TWO)

A network engineer is configuring a core router interface assigned the IPv4 address $10.16.42.138/22$. What is the broadcast address for this subnet?

A network administrator is planning a wireless deployment in a facility using the 2.4 GHz frequency band in North America. To avoid adjacent-channel interference between neighboring access points, which of the following standard 2.4 GHz channels should be selected for cell assignment? (Select TWO.)

A workstation on an enterprise network needs to establish a connection to an external host at $secure.partner.example.org$. The workstation has no cached DNS entries for this domain. Place the operational steps of the standard recursive DNS resolution process in the correct chronological order from first to last.

A network administrator is troubleshooting DHCP lease failures for client devices on a newly established remote subnet ($172.16.10.0/24$). The centralized DHCP server resides on a core management subnet ($10.100.1.0/24$). Packet captures on the client-facing Layer 3 interface confirm that client broadcast DHCPDISCOVER packets are arriving at the local gateway, but no request packets are reaching the DHCP server. Which of the following statements correctly describe the required configuration and protocol behavior of the DHCP relay agent in this scenario? (Select TWO)

A network technician adds a new Layer 3 switch to a multi-access Ethernet network segment running OSPF Area $0$. The operational Designated Router (DR) on the segment has a Router ID of $10.1.1.1$ and an OSPF priority of $1$. The new switch is configured with an OSPF priority of $255$ and a Router ID of $10.1.1.254$. What will happen to the DR role on this network segment immediately after the new switch establishes adjacency?

A network administrator is configuring Network Address Translation (NAT) and Port Address Translation (PAT) on an edge router for an organization. The private internal network uses the $10.0.0.0/8$ address space. The requirements state that hundreds of internal workstations must share a single registered public IPv4 address for outbound internet access, and external users must be able to securely access an internal HTTPS web server ($10.0.0.50$) using that same public IP address. Which of the following implementation steps or mechanisms must be configured on the router to fulfill these requirements? (Select TWO.)

An enterprise router joins a newly configured OSPF area. Place the operational steps of the link-state dynamic routing process in the correct order, from initial neighbor discovery to final route installation.

A client workstation with an empty local DNS cache needs to access an internal corporate host at host.finance.example.com. The workstation sends a DNS query to its configured recursive DNS server, which subsequently performs iterative lookups to resolve the fully qualified domain name (FQDN). In what order do the steps of this DNS name resolution process occur from initial request to final IP resolution?

A network engineer is configuring a centralized DHCP server ($10.100.1.50$) to service client devices across multiple remote subnets. A workstation located on the Sales subnet ($192.168.15.0/24$) broadcasts a DHCPDISCOVER message, which is intercepted by the local default gateway router. How does the central DHCP server determine which specific IP address scope to allocate the lease from?

An enterprise network administrator is auditing the organization's external DNS zone files and service discovery settings. Match each DNS resource record type on the left with its correct primary technical function or scenario application on the right.

Match each IEEE 802.11 wireless standard with its defining operational frequency and key technical capability.

An organization needs to connect 150 internal workstations on the $172.16.10.0/24$ private subnet to external web services simultaneously. The Internet Service Provider (ISP) has allocated only a single public IPv4 address ($198.51.100.25$) to the perimeter router's WAN interface. Which address translation method must be configured on the router to meet these requirements by mapping multiple private IP addresses to unique source port numbers on the shared public IP address?

A network administrator is deploying three neighboring wireless access points within an office floor plan operating on the 2.4 GHz frequency band. To minimize co-channel and adjacent-channel interference, which set of channels should be assigned to these access points?

A network engineer is configuring a multi-access point wireless deployment operating in the 2.4 GHz band for an enterprise office in North America. To optimize spectrum utilization, prevent adjacent-channel interference (ACI), and effectively manage co-channel interference (CCI) across adjacent coverage cells, which of the following deployment strategies should be implemented? (Select TWO.)

Three switches—S1, S2, and S3—are connected in a triangular physical topology using standard IEEE 802.1D Spanning Tree Protocol (STP):

- S1 has a Bridge Priority of 4096 and MAC address 00:11:22:33:44:55.
- S2 has a Bridge Priority of 32768 and MAC address 00:AA:BB:CC:DD:EE.
- S3 has a Bridge Priority of 32768 and MAC address 00:AA:BB:CC:DD:FF.

Link speeds and default STP path costs are configured as follows:
- The link between S1 and S2 is 1 Gbps (STP Cost = 4).
- The link between S2 and S3 is 1 Gbps (STP Cost = 4).
- The link between S1 and S3 is 100 Mbps (STP Cost = 19).

Based on STP operations, which TWO of the following statements accurately describe port role determinations and traffic paths in this network?

Match each Network Address Translation (NAT) term on the left with its correct operational description or mapping behavior on the right.