Network Implementation

A network administrator is provisioning a dedicated IPv4 subnet for a new VoIP deployment from an available $192.168.10.0/24$ network block. The subnet must accommodate $60$ IP phones, $2$ router interfaces operating VRRP for default gateway redundancy, and $1$ switch management interface. Which of the following CIDR prefixes represents the smallest subnet that fulfills all required host assignments while preserving the maximum amount of address space for future allocation?

An enterprise border router maintains two paths to reach a remote corporate subnet ($10.45.0.0/24$). Path 1 is learned via internal BGP (iBGP) with an Administrative Distance (AD) of 200, while Path 2 is learned via Open Shortest Path First (OSPF) with an AD of 110. Both routes report the exact same prefix length ($/24$). Network monitoring shows that traffic is actively taking Path 2 over the low-bandwidth OSPF backup link instead of the primary iBGP connection. Which configuration modification should the network administrator perform on the border router to ensure traffic prefers the primary iBGP link under normal operations?

Match each 802.1Q trunking component or port mode behavior on the left with its corresponding operational description on the right.

An enterprise firewall is configured to handle traffic between an internal network ($10.0.0.0/8$) and the Internet. The administrator configures Port Address Translation (PAT / NAT Overload) using the firewall's public interface IP address ($203.0.113.1$) for internal host outbound access. Simultaneously, a Static NAT rule is configured to map an internal web server ($10.0.0.50$) to a dedicated public IP address ($203.0.113.2$). Which of the following statements accurately describe how address translation operates in this environment? (Select TWO.)

A network engineer is implementing DHCP Relay Agent Information Option (Option 82) on Layer 2 access switches within an enterprise building. When a client sends a broadcast $DHCPDISCOVER$ message, the relay agent appends sub-options to the request before forwarding it to a centralized DHCP server across a routed core. Which sub-option field specifically carries identifying information about the physical switch port and VLAN from which the client request originated?

A network technician is documenting IPv6 deployment scopes and prefix classifications across an enterprise infrastructure. Match each IPv6 address type on the left to its correct prefix range and functional scope on the right.

A network administrator runs the `nslookup` command to check the mail server configuration for an enterprise domain and obtains the following output:

text
> set type=MX
> company.com
Server: dns1.internal.net
Address: 10.0.0.53

Non-authoritative answer:
company.com mail exchanger = 10 mail.company.com

Which DNS record type must be configured to map `mail.company.com` directly to its corresponding IPv4 address?

A network security architect is defining address translation policies for a corporate infrastructure. Match each technical network requirement on the left with its corresponding NAT/PAT implementation method on the right.

Match each Network Address Translation (NAT) implementation type on the left with its corresponding address mapping characteristic on the right.

A network administrator receives an alert that a server with the IPv4 address $172.24.110.99/23$ cannot communicate beyond its local segment due to a misconfiguration on the upstream switch interface. What is the correct broadcast address for the subnet to which this server belongs?

An administrator is inspecting the Network Address Translation (NAT) table on an enterprise border router to resolve a host connectivity issue. The CLI display shows the following active translation entry:

Which IPv4 address represents the private address assigned directly to the internal host on the local network before translation occurs?

An IT technician is deploying three access points in a line along an office corridor to provide continuous wireless coverage on the $2.4\text{ GHz}$ spectrum. Which channel assignment pattern should be applied across the three adjacent access points to completely avoid adjacent-channel interference?

A network engineer is configuring network address translation on an enterprise edge firewall with a public IPv4 allocation of $203.0.113.0/29$. The network architecture requires an internal database management server ($192.168.10.5$) to accept persistent inbound management connections from authorized external partners while concealing its internal address. Simultaneously, 350 internal user workstations on the $192.168.10.0/24$ subnet require outbound internet access. Which address translation configuration strategy correctly satisfies all connectivity and access requirements while optimizing public IP address consumption?

A network administrator is designing a high-density enterprise wireless network using Wi-Fi 6 (802.11ax) access points. The goal is to optimize spectrum efficiency, reduce co-channel interference (CCI) in overlapping coverage areas, and efficiently support a large volume of concurrent client connections. Which of the following features or deployment strategies should the administrator implement? (Select TWO.)

A network engineer is configuring an interface using Stateless Address Autoconfiguration (SLAAC) with modified EUI-64 to derive the host portion of the IPv6 address. The network card has a MAC address of 00:1A:2B:3C:4D:5E, and the designated link-local prefix is fe80::/64. Which of the following represents the correctly formatted IPv6 link-local address for this host?

Three enterprise switches (SW1, SW2, and SW3) are connected in a triangular loop running standard IEEE 802.1D Spanning Tree Protocol (STP). All three switches retain the default bridge priority of 32768, and their MAC addresses are as follows:
- SW1: 00:1A:2B:3C:4D:01
- SW2: 00:1A:2B:3C:4D:02
- SW3: 00:1A:2B:3C:4D:03

The physical links and their associated STP path costs are:
- Link between SW3 and SW1: 100 Mbps (STP path cost = 19)
- Link between SW3 and SW2: 1 Gbps (STP path cost = 4)
- Link between SW2 and SW1: 1 Gbps (STP path cost = 4)

Which switch port on SW3 will be elected as the Root Port, and what is its calculated Root Path Cost?

A network administrator is deploying IPv6 across a new corporate branch office. To optimize IP allocation, the administrator subnets the organization's assigned prefix into $/68$ subnets and configures one of these $/68$ subnets on the gateway router's local interface. Although Router Advertisement (RA) messages are actively transmitted across the LAN, host workstations configured to use Stateless Address Autoconfiguration (SLAAC) fail to acquire global unicast addresses. Which of the following best explains why SLAAC is failing to automatically configure host addresses on this subnet?

A network administrator configures a static 1:1 NAT mapping on an enterprise edge router for an internal application server with Inside Local address $192.168.10.50$ to Inside Global address $198.51.100.50$. Additionally, a dynamic Port Address Translation (PAT / Overload) rule is configured to translate all host traffic from $192.168.10.0/24$ to the router's public interface address ($198.51.100.1$). Remote clients on the internet can successfully initiate connections to the application server using $198.51.100.50$. However, when the internal application server itself initiates outbound requests to a partner API service that enforces IP whitelist security, the partner API rejects the connection. Network captures reveal that outbound packets originating from the server are sent using source IP $198.51.100.1$ with an ephemeral port rather than $198.51.100.50$. Which of the following best explains why this issue occurs?

A network engineering team is designing a multi-floor high-density enterprise wireless deployment using IEEE 802.11ax access points operating in both the 2.4 GHz and 5 GHz bands. During the predictive site survey phase, the team must configure the deployment to minimize co-channel interference (CCI), prevent coverage overlap issues, and optimize client band steering toward 5 GHz. Which of the following technical design decisions and configuration strategies should the team implement? (Select THREE).

A network administrator is designing a dedicated VLAN for a warehouse automation system that requires static IPv4 addresses for $15$ smart sensor nodes. To conserve network address space, the administrator must select the smallest possible CIDR subnet prefix that accommodates all required host nodes. Which prefix length should be configured for this subnet?