All practice questions
2237 questions
A network administrator is evaluating dynamic routing protocol characteristics for an enterprise LAN deployment. Which of the following operational features are specific to link-state routing protocols such as OSPF when compared to distance-vector routing protocols? (Select TWO.)
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A network technician is auditing a telecommunications enclosure and updating the facility's physical rack elevation diagrams. Which of the following information types should be included on a rack elevation diagram? (Select TWO.)
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A client host connected to VLAN 20 requires an IPv4 address lease from a centralized DHCP server located on VLAN 10. The router acting as the default gateway for VLAN 20 is configured with a DHCP relay agent. What is the correct chronological sequence of network events during the initial discovery and offer process?
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A network engineering team is restructuring its operational repository to streamline incident resolution and infrastructure planning. Match each network documentation artifact on the left with the operational scenario on the right where it serves as the primary technical reference.
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During an infrastructure security audit of a enterprise cloud network, a network engineer discovers that virtual machines residing in separate IP subnets can communicate directly without traversing the perimeter firewall. To trace the virtual routing tables, interface IP addressing, VLAN IDs, and logical security zone boundaries across the environment regardless of underlying hardware server placement, which of the following documentation artifacts should the engineer consult first?
A network architect is performing a spectral audit of a high-density warehouse deployment operating in the 2.4 GHz ISM band. The physical installation consists of five adjacent access points (APs) mounted on a single high-ceiling beam line. The current channel configuration assigns the APs to channels 1, 3, 6, 8, and 11 with equal transmit power. Which statement accurately identifies the primary issue with this channel plan and its operational impact on the wireless network?
During a network infrastructure review, a network engineer needs to analyze the flow of IP traffic, subnet boundaries, dynamic routing protocol relationships, and Virtual Router Redundancy Protocol (VRRP) virtual gateway IP assignments across enterprise core routers. The engineer does not need physical port placements, rack units, or cable path lengths. Which of the following diagrams or documentation types should the engineer consult?
A network administrator configures a Layer 3 switch interface serving the Finance subnet () with `ip helper-address 10.10.10.254` to direct DHCP traffic to a centralized DHCP server on the Management subnet (). When a client host on the Finance subnet broadcasts a DHCPDISCOVER packet, how does the Layer 3 switch process this packet before transmitting it to the DHCP server?
A edge gateway router receives candidate routes from multiple routing sources for the destination network . The available entries are:
- An OSPF route with an Administrative Distance of and a metric cost of
- An iBGP route with an Administrative Distance of and a metric of
- A floating static route configured with an Administrative Distance of
Which route will the gateway router install into its active routing table for traffic destined to ?
A network interface on a switch configured with IEEE 802.1D Spanning Tree Protocol (STP) experiences a link bring-up event. In what sequence does the port transition through its operational states from initial activation until it actively processes and forwards end-user network traffic? Place the STP port states in chronological order from first to last.
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Match each enterprise address translation requirement or scenario on the left with the correct NAT/PAT implementation method or routing behavior on the right.
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A network administrator is attempting to perform a manual zone transfer from an authoritative internal DNS server at for the domain . 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 (). 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)
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Match each remote management technology with its primary administrative scenario or capability.
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A network engineer is configuring a core router interface assigned the IPv4 address . 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.)
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An organization is updating its enterprise documentation repository to separate physical infrastructure details from logical network topology maps. Which of the following components should be documented exclusively within the physical network documentation? (Select TWO.)
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A network technician is setting up an automated boot-server infrastructure to distribute basic initialization configuration files to newly unboxed network switches across different subnets. The process relies on Trivial File Transfer Protocol (TFTP) for lightweight, connectionless file transfer. Which transport layer protocol and destination port number must be allowed through the intermediate firewalls to permit this traffic?
A network administrator is organizing security auditing profiles and intermediate firewall access rules for essential enterprise infrastructure services. Match each network protocol on the left with its corresponding default port and transport layer protocol on the right.
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