CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 1201:

  A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter. Which of the following ports should be blocked when checking firewall configuration?

  A. 22

  B. 23

  C. 80

  D. 3389

  E. 8080

  Correct Answer: B

  Telnet uses UDP port 23.

• Question 1202:

  A technician is writing documentation regarding a company's server farm. The technician needs to confirm the server name for all Linux servers. Which of the following commands should the technician run?

  A. ipconfig

  B. nslookup

  C. arp

  D. route

  Correct Answer: B

  Nslookup (stands for "Name Server Lookup") is a useful command for getting information from the DNS server. It is a network administration tool for querying the Domain Name System (DNS) to obtain domain name or IP address mapping or any other specific DNS record. It is also used to troubleshoot DNS-related problems.

• Question 1203:

  A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available. Which of the following would be MOST affected by this statistic?

  A. A VoIP sales call with a customer

  B. An in-office video call with a coworker

  C. Routing table from the ISP

  D. Firewall CPU processing time

  Correct Answer: A

  keyword WAN , since the voip call is with a customer, it is out of office using the WAN

• Question 1204:

  Which of the following ports is commonly used by VoIP phones?

  A. 20

  B. 143

  C. 445

  D. 5060

  Correct Answer: D

  -

  Port 20 is used by the FTP (File Transfer Protocol) protocol for data transfers.

  -

  Port 143 is used by the IMAP (Internet Message Access Protocol) protocol for retrieving email messages from a server.

  -

  Port 445 is used by the SMB (Server Message Block) protocol for file and printer sharing in Microsoft Windows environments.

  -

  Port 5060 is commonly used by the SIP (Session Initiation Protocol) for signalling and establishing voice and video calls over IP networks.

• Question 1205:

  Which of the following connector types would have the MOST flexibility?

  A. SFP

  B. BNC

  C. LC

  D. RJ45

  Correct Answer: A

  SFP (Small Form-factor Pluggable) is a type of transceiver used for data communication. It is a compact and hot-swappable module that provides a physical connection between a network device and a fiber optic cable. SFPs can support various data rates and distances, depending on the type of SFP used.

  An example of SFP use for a home user would be connecting a home network to a high-speed internet service provider. The SFP would be used to connect the network switch to the fiber optic modem provided by the internet service provider, allowing the home network to access the internet at high speeds. This setup would be particularly useful for homes with multiple devices that require a high-speed internet connection, such as gaming consoles, smart TVs, and streaming devices.

• Question 1206:

  Which of the following TCP ports is used by the Windows OS for file sharing?

  A. 53

  B. 389

  C. 445

  D. 1433

  Correct Answer: C

  Server Message Block is used for file transfer over TCP port 445.

• Question 1207:

  A network administrator redesigned the positioning of the APs to create adjacent areas of wireless coverage. After project validation, some users still report poor connectivity when their devices maintain an association to a distanced AP. Which of the following should the network administrator check FIRST?

  A. Validate the roaming settings on the APs and WLAN clients

  B. Verify that the AP antenna type is correct for the new layout

  C. Check to see if MU-MIMO was properly activated on the APs

  D. Deactivate the 2.4GHz band on the APS

  Correct Answer: A

  Roaming is the process of switching from one AP to another as the user moves around the network. If the roaming settings are not configured correctly, the user may experience poor connectivity when the device maintains an association with a distant AP. Improper roaming settings can result in slow speeds, dropped connections, and low signal strength.

  Therefore, validating the roaming settings is the first step the network administrator should take when addressing the issue of poor connectivity. The roaming settings need to be configured in a way that allows the device to seamlessly switch from one AP to another as the user moves around the network. If the roaming settings are not configured properly, the network administrator should adjust them to ensure the best possible user experience.

  By validating the roaming settings first, the network administrator can eliminate the possibility of this being the root cause of the issue, and move on to other potential causes if necessary.

• Question 1208:

  A technician is assisting a user who cannot connect to a network resource. The technician first checks for a link light. According to troubleshooting methodology, this is an example of:

  A. using a bottom-to-top approach.

  B. establishing a plan of action.

  C. documenting a finding.

  D. questioning the obvious.

  Correct Answer: A

• Question 1209:

  Which of the following transceiver types can support up to 40Gbps?

  A. SFP+

  B. QSFP+

  C. QSFP

  D. SFP

  Correct Answer: B

  QSFP+ (Quad Small Form-factor Pluggable Plus) is a type of transceiver that supports data transfer rates up to 40 Gbps. It is an upgraded version of the original QSFP transceiver, which supports up to 4 Gbps. SFP+ (Small Form-factor Pluggable Plus) is another type of transceiver that supports data transfer rates up to 10 Gbps. It is an upgraded version of the original SFP transceiver, which supports up to 1 Gbps.

• Question 1210:

  A network technician is installing new software on a Windows-based server in a different geographical location. Which of the following would be BEST for the technician to use to perform this task?

  A. RDP

  B. SSH

  C. FTP

  D. DNS

  Correct Answer: A

  Remote Desktop Protocol is used to installed software while FTP is for file transfer