Network Implementation

A workstation on a remote branch subnet initializes network communications and requires an IP address assignment from a centralized DHCP server located across a routed WAN link. Place the chronological steps of the DHCP Relay forwarding process in the correct sequence from initial client packet creation to the reception of the initial offer.

A network administrator is connecting a wireless access point (AP) to switch port GigabitEthernet 1/0/5. The AP transmits management traffic untagged on VLAN 100, while wireless user traffic on the 'Guest' SSID is transmitted with an 802.1Q tag for VLAN 200. The switch port is currently operating with default 802.1Q trunk settings, where VLAN 1 is the default native VLAN. Which interface configuration command must be executed on Switch GigabitEthernet 1/0/5 so that untagged management frames are correctly processed on VLAN 100?

A network administrator is inspecting an IEEE 802.1Q trunk link between two switches, `SW-CAMPUS-01` and `SW-CAMPUS-02`. The configuration of interface GigabitEthernet0/1 on `SW-CAMPUS-01` is:

text
interface GigabitEthernet0/1
switchport mode trunk
switchport trunk native vlan 50
switchport trunk allowed vlan 10,20,30,50

The configuration of interface GigabitEthernet0/1 on `SW-CAMPUS-02` is:

text
interface GigabitEthernet0/1
switchport mode trunk
switchport trunk native vlan 1
switchport trunk allowed vlan 10,20,30,50

A workstation connected to an access port on `SW-CAMPUS-01` in VLAN 50 transmits an unencapsulated Ethernet broadcast frame destined across the trunk link. Which of the following best describes how `SW-CAMPUS-02` will handle this frame upon arrival at its GigabitEthernet0/1 interface?

A security analyst is investigating a potential incident involving a server assigned the IP address $10.80.35.138/26$. What is the broadcast IPv4 address of the subnet to which this server belongs?

A network administrator is configuring a newly created VLAN dedicated to VoIP phones. The router interface handling this subnet is configured with the network block $172.16.45.128/27$. What is the maximum number of usable host IP addresses that can be assigned to end devices within this subnet?

A network technician is setting up a new network segment using the IP block $10.0.4.0/24$. Following standard configuration guidelines, the default gateway will be assigned the last usable host IP address in the subnet. What is the last usable IPv4 host address in the $10.0.4.0/24$ network?

A client workstation connected to VLAN 45 ($10.45.0.0/24$) issues a Layer 2 broadcast `DHCPDISCOVER` packet ($255.255.255.255$) to obtain an IP configuration. The default gateway interface for VLAN 45 on the Layer 3 switch is configured with the IP address $10.45.0.1$ and an IP helper address pointing to a centralized DHCP server at $10.200.10.25$. Which set of header and payload modifications will the Layer 3 switch perform on this packet before forwarding it across the routed core to the DHCP server?

A network administrator is designing an IP addressing scheme for a new branch office location. The department requires static IP assignments for 60 user workstations, 2 IP phone gateways, and 2 redundant default gateway router interfaces. The administrator must assign the smallest possible subnet block from `10.150.0.0/16` that will successfully accommodate all required host devices. Which CIDR prefix and subnet mask should the administrator configure?

Match each switchport configuration scenario on the left with its corresponding IEEE 802.1Q frame processing behavior or operational link state on the right.

A network router receives two identical candidate routes to destination network $192.168.50.0/24$: one route was learned via OSPF (default administrative distance of $110$) and the other route was learned via RIP (default administrative distance of $120$). Assuming default protocol configurations are used, which route will the router install into its active routing table?

A network administrator attempts to add VLAN 30 to an active 802.1Q trunk line between two distribution switches that currently carries VLAN 10 and VLAN 20. The administrator enters the following command on interface GigabitEthernet1/0/1:

`SW-Dist1(config-if)# switchport trunk allowed vlan 30`

Immediately after executing this command, users on VLAN 10 and VLAN 20 report loss of connectivity across the trunk link. Which of the following best explains why this connectivity issue occurred?

An enterprise network administrator configures a Layer 3 access switch as a DHCP relay agent for VLAN 55 ($10.55.0.0/24$), designating a remote server at $192.168.1.100$ via an `ip helper-address` command on SVI 55. Downstream Layer 2 edge switches append DHCP Option 82 (Relay Agent Information) metadata to client requests before forwarding them to the Layer 3 switch. However, client hosts on VLAN 55 fail to obtain IP addresses, and packet drops are logged on the Layer 3 switch for incoming DHCPDISCOVER packets containing Option 82 with a gateway IP address (`giaddr`) of $0.0.0.0$. Which configuration change on the Layer 3 switch will resolve this issue?

A core border router receives an IP packet destined for host address $10.20.105.42$. The router's active routing table contains four operational candidate entries that match this target network space:

1. Static route to $10.20.96.0/19$ via next-hop $172.16.1.1$ (Administrative Distance: $1$)
2. OSPF route to $10.20.104.0/21$ via next-hop $172.16.2.1$ (Administrative Distance: $110$, Metric: $20$)
3. Internal EIGRP route to $10.20.104.0/22$ via next-hop $172.16.3.1$ (Administrative Distance: $90$, Metric: $15$)
4. External BGP route to $10.20.0.0/16$ via next-hop $172.16.4.1$ (Administrative Distance: $20$, Metric: $100$)

Which next-hop IP address will the router select to forward this packet?

A network administrator is configuring a GigabitEthernet 0/1 trunk link on switch SW-BuildingA to connect to SW-Core. The link is intended to carry traffic for VLAN 10 (Data), VLAN 20 (Voice), and VLAN 99 (Management). VLAN 99 is configured as the native VLAN on both switches. The administrator executes the command `switchport trunk allowed vlan 10,20` on interface GigabitEthernet 0/1. Immediately after executing the command, remote management access to SW-BuildingA via VLAN 99 drops. Which of the following best explains why management traffic is no longer traversing the trunk link?

A network administrator is provisioning a dedicated management VLAN to connect 14 top-of-rack switch interfaces and 1 central default gateway interface. To minimize wasted IP address space, which of the following CIDR prefix lengths represents the smallest subnet mask that can accommodate all 15 required interfaces?

A network administrator is troubleshooting connectivity on an enterprise server host configured with the IP address $10.205.75.142/21$. To establish proper firewall routing rules, the administrator needs to identify the complete range of usable host IP addresses within this specific subnet. Which of the following represents the correct usable host IP address range for this subnetwork segment?

A network technician is setting up a router for a newly expanded office. The organization requires that if an active link goes down, the router should automatically discover alternate paths and update its routing table without requiring manual administrator intervention. Which of the following network technologies should be implemented to fulfill this requirement?

During a network security audit, an incident response analyst discovers a compromised host with the IPv4 address $172.16.89.138/22$. What is the broadcast address for the subnet to which this host belongs?

A network administrator is replacing static routes with a dynamic routing protocol across an enterprise network. Which TWO of the following are key operational features provided by dynamic routing protocols? (Select TWO.)

A network administrator is designing and hardening VLAN trunking parameters across enterprise switches to ensure proper frame encapsulation, DTP negotiation, and VLAN prune/allow list configurations. Match each VLAN configuration parameter or frame header attribute on the left with its corresponding operational behavior on the right.