Free JK0-023 Exam Braindumps
CompTIA Network+ certification Questions 381–385 (page: 78)

Updated On: 10-Feb-2026

An IT manager is looking for a solution that can easily trace back suspicious Internet browsing to particular users at a company. Which of the following can BEST provide this functionality?

  1. Layer 3 managed switch
  2. VPN concentrator
  3. Load balancer
  4. Content filter

Answer(s): D



Which of the following is used to filter outgoing network requests?

  1. Proxy server
  2. VPN concentrator
  3. DHCP server
  4. IIS server

Answer(s): A



A user's computer is unable to access the Internet. Which of the following utilities can a technician use to determine if DNS is working?

  1. nbstat
  2. arp
  3. nslookup
  4. ipconfig

Answer(s): C



A company is experiencing a denial of service attack and wants to identify the source IP address of the attacker in real time. Which method is the BEST way to accomplish this?

  1. Network sniffer
  2. Syslog
  3. SNMPv3
  4. System logs

Answer(s): A



Which of the following can assist when troubleshooting a cable that meets the 1000BaseLX specification?

  1. Multimeter
  2. OTDR
  3. Link state
  4. Protocol analyzer

Answer(s): B



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