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CompTIA JK0-023 Exam Syllabus Topics:

CompTIA Network+ certification Sample Questions:

1. A network administrator suspects a broadcast storm is causing performance issues on the network. Which of the following would be used to verify this situation?

A) Toner probe
B) Multimeter
C) Protocol analyzer
D) Environmental monitor

2. Which of the following services are affected by closing the default ports of 80 and 21 via ACL on a company router?

A) FTP and basic Internet traffic
B) HTTPS and IMAP traffic
C) DNS and TELNET traffic
D) VPN and RDP traffic

3. Which of the following would a network administrator use to scan a network for vulnerabilities?

A) TCPDUMP
B) ICMP
C) ACL
D) NMAP

4. Kurt, a user, is unable to logon to his domain from his desktop PC. A cable certifier is used and shows a high value of NEXT. Which of the following represents the cause?

A) TX/RX reversed
B) Split cables
C) Crosstalk
D) DB loss

5. Which of the following TCP/IP and OSI model layers retransmits a TCP packet if it is not received successfully at its destination?

A) The transport OSI model layer and the transport TCP/IP model layer.
B) The network OSI model layer and the transport TCP/IP model layer.
C) The transport OSI model layer and the Internet TCP/IP model layer.
D) The network OSI model layer and the Internet TCP/IP model layer.

Solutions: