Tüm alıştırma soruları

A network administrator receives an alert indicating that a remote data facility has experienced a total WAN transport link failure, rendering all primary IP interfaces and in-band networks unreachable. The administrator needs to gain direct command-line access to the core router to diagnose the interface state and attempt configuration recovery. Which of the following remote access mechanisms will allow the administrator to establish access to the device under these conditions?

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.

Match each network documentation diagram type with its primary operational purpose.

A network administrator needs to assign static IP addresses to new servers on a subnet configured with the address block $172.16.40.128/26$. Which of the following IP addresses are valid usable host addresses within this subnet? (Select TWO.)

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?

An enterprise network operating the Open Shortest Path First (OSPF) routing protocol experiences an unexpected fiber link failure between two core routers. Place the steps of the OSPF link-state convergence process in the correct chronological order from first event to final completion.

During a physical layer audit of a newly acquired office building, a network technician discovers that several workstation drops connected to wall outlet RJ-45 jacks are failing wiremap tests due to crossed pairs and split pairs between the wall plates and the intermediate distribution frame (IDF) punch-down blocks. The technician needs to review documentation that illustrates individual conductor pinouts, wire color-coding standards (T568A vs. T568B), block terminations, and detailed cable run paths. Which of the following documentation types should the technician consult to resolve this issue?

A network engineer needs to document a newly expanded network segment connecting three branch offices. The documentation must clearly illustrate IP subnet ranges, gateway addresses, interface names, and dynamic routing protocol boundaries, without showing physical cable lengths or hardware rack locations. Which of the following documentation types is most appropriate for this requirement?

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.

Match each dynamic routing protocol to its corresponding architectural classification and primary metric selection criteria.

A network administrator is sub-dividing an allocated IPv4 address block of $172.28.16.0/20$ into contiguous subnets with a $/23$ prefix length for datacenter switches. What is the broadcast address of the second $/23$ subnet?

Match each network documentation artifact to its primary operational scenario or deployment use case.

During a network architecture review, an engineer explains how distance-vector routing protocols prevent routing loops on a local subnetwork. Specifically, the protocol prevents a router from advertising a learned route back out of the exact interface from which it received that update. Which mechanism is the engineer describing?

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?

During a bandwidth exhaustion incident, a network administrator inspects packet captures at the perimeter firewall. The logs show a massive influx of inbound UDP traffic on port 123 directed at an enterprise public IP address. The payload responses originate from third-party public time servers responding to spoofed $monlist$ commands that the target enterprise never initiated. Which of the following network attack types is being executed?

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.

A network administrator configures a disaster recovery backup schedule consisting of a full system backup executed every Sunday at midnight and differential backups executed every weeknight from Monday through Friday. A storage array fails on Thursday afternoon before Thursday's backup takes place. Which of the following backup sets are required to perform a complete system restoration to the latest available point in time? Select TWO.