Examkin

Soru

Zorluk: ZorRemote Access and Out-of-Band Management

A network engineer is designing an out-of-band (OOB) management solution for a remote datacenter rack to maintain administrative control during a complete primary network failure. The technical specifications mandate: (1) remote GUI-level visual access to bare-metal server console screens during POST/boot, (2) direct serial CLI management of edge routers and switches, and (3) the capability to remotely power-cycle frozen hardware. Which deployment strategy fulfills all of these requirements while maintaining dedicated OOB access?

  1. Deploy an IP-KVM switch for server console access, a serial console terminal server for network device CLI access, and a smart switched PDU for power cycling, all connected through an auxiliary cellular modem connection.Cevap
  2. B
    Configure SNMPv2c across all switches and servers using UDP port 161 traps delivered over an dedicated in-band management VLAN to monitor system metrics and trigger remote reboots.
  3. C
    Enable unencrypted Telnet on TCP port 23 across network switches and RDP on TCP port 3389 across bare-metal servers, routed over the primary corporate WAN gateway.
  4. D
    Deploy TFTP using UDP port 69 over the primary interface to broadcast automated recovery files and execute remote OS reboots.

Cevap

Deploy an IP-KVM switch for server console access, a serial console terminal server for network device CLI access, and a smart switched PDU for power cycling, all connected through an auxiliary cellular modem connection.
The combination of an IP-KVM, serial terminal server, smart switched PDU, and cellular modem provides complete out-of-band (OOB) administrative coverage. IP-KVM captures server video signals before the OS loads, the terminal server provides RS-232 serial console access to routers and switches, the switched PDU allows power cycling of locked devices, and the cellular modem ensures connectivity completely independent of primary network links.

Adım Adım Çözüm

1
Analyze the management access requirements during primary network loss.
Identified three required functions: BIOS/POST GUI server access, router/switch serial CLI access, and remote hard power control, reachable via an independent network path.
In-band solutions (VLANs, primary WAN gateways) become unreachable during a primary network failure.
2
Map hardware appliances to specific out-of-band administration requirements.
IP-KVM satisfies server screen/GUI access; terminal server connects to device serial console ports; switched PDU provides power control per outlet.
Each dedicated device handles a distinct hardware management layer without relying on host operating systems.
3
Evaluate the transmission pathway for out-of-band reachability.
An auxiliary cellular modem provides independent internet access separate from primary fiber/ethernet ISPs.
Out-of-band management requires physical or logical path isolation from the main production data path.

Anahtar Kavram

Out-of-Band (OOB) Remote Management Architecture
Tahmini Süre:2m 0s
Bu soruyu puanla

Konular

Remote Access and Out-of-Band Management

Bu konudan daha fazla soru