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| Section | Objectives |
|---|---|
| Server Hardware Installation and Management | |
| Server Administration | |
| Troubleshooting | |
| Storage and Virtualization Concepts | |
| Security and Disaster Recovery |
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293. Frage
A user reports that a server is not accessible. A technician sees the following message on the server: PXE server not found. Which of the following should the technician attempt FIRST to resolve the issue?
Antwort: D
294. Frage
Which of the following BEST describes a warm site?
Antwort: A
295. Frage
Which of the following is the number of licenses required for ten quad CPU servers with 12-core processors in a socket-based licensing model?
Antwort: A
Begründung:
In a socket-based licensing model you license per processor socket, so 10 servers × 4 sockets each = 40 licenses.
296. Frage
A systems administrator is setting up a new server that will be used as a DHCP server. The administrator installs the OS but is then unable to log on using Active Directory credentials. The administrator logs on using the local administrator account and verifies the server has the correct IP address, subnet mask, and default gateway. The administrator then gets on another server and can ping the new server. Which of the following is causing the issue?
Antwort: D
Begründung:
The server is not joined to the domain is causing the issue. A domain is a logical grouping of computers that share a common directory database and security policy on a network. Active Directory is a Microsoft technology that provides domain services for Windows-based computers.
To use Active Directory credentials to log on to a server, the server must be joined to the domain that hosts Active Directory. If the server is not joined to the domain, it will not be able to authenticate with Active Directory and will only accept local accounts for logon. To join a server to a domain, the administrator must have a valid domain account with sufficient privileges and must know the name of the domain controller that hosts Active Directory.
297. Frage
A senior administrator instructs a technician to run the following script on a Linux server:
for i in {1..65536); do echo Si; telnet localhost $i; done
The script mostly returns the following message: Connection refused. However, there are several entries in the console display that look like this:
80
Connected to localhost
443
Connected to localhost
Which of the following actions should the technician perform NEXT?
Antwort: C
Begründung:
Explanation
The script that the technician is running is trying to connect to every port on the localhost (the same machine) using telnet, a network protocol that allows remote access to a command-line interface. The script mostly fails because most ports are closed or not listening for connections. However, the script succeeds on ports 80 and
443, which are the default ports for HTTP and HTTPS protocols, respectively. These protocols are used for web services and web browsers. Therefore, the technician should look for an unauthorized HTTP service on this server, as it may indicate a security breach or a misconfiguration. Looking for a virus infection on this server is also possible, but not the most likely source of the issue. Looking for an unauthorized Telnet service on this server is not relevant, as the script is using telnet as a client, not a server. Looking for an unauthorized port scanning service on this server is not relevant, as the script is scanning ports on the localhost, not on other machines. References:
https://phoenixnap.com/kb/telnet-windows
https://www.techopedia.com/definition/23337/http-port-80
https://www.techopedia.com/definition/23336/https-port-443
298. Frage
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