EHCS Readiness Quiz Are you ready for the EHCS exam?Test your skills! Step 1 of 39 2% 1. At what layer does a switch normally operate?*2734 2. At what layer does a router operate?*2345 3. What is the maximum size of an Ethernet packet?*1400130015001200 4. What type of protocol is considered connection-oriented?*ICMPARPTCPUDP 5. When monitoring a network, you receive an ICMP type 8 packet. What does this represent?*Echo requestEcho replyEcho startEcho recall 6. Size in bytes of the sequence and acknowledgment number in the TCP header?*2364 7. The default window size in bits for Windows is:*1612208 8. IP protocol type 17 represents which type of network traffic?*ICMPTCPIGRPUDP 9. What does FIN in TCP flag define?*Used to close a TCP connectionUsed to abort a TCP connection abruptlyUsed to acknowledge receipt of a previous packet or transmissionUsed to indicate the beginning of a TCP connection 10. Which is the correct PCAP filter to capture all TCP traffic going to or from host 192.168.0.125 on port 25?*tcp.port == 25 and ip.host == 192.168.0.125port 25 and host 192.168.0.125host 192.168.0.125:25tcp.src == 25 and ip.host == 192.168.0.125 11. Valid TCP flags include which of the following?*FIN, PSH, RST, URG, SYNACK, FIN, RST, ECHO, SYNACK, BIN, PSH, RST, SYNBGP, RST, SYN, NULL, URG 12. According to TCP/IP standards, what should you conclude if you send a TCP packet with only the FIN flag set and you receive a RST in response?*The port is openThe port is filteredThe port is closedThe status of the port cannot be determined 13. Observing TCP packets with the URG, FIN, and PSH flags set is an indication of what type of behavior?*A Maimon scanA NULL scanAn Nmap Xmas scanA FIN scan 14. What is the response to a nmap –sU scan when the port is open?*ICMP type 3RSTno responseSYN/ACK 15. What nmap command line syntax parameter must be used in order to perform a TCP half-open scan?*-sH-sT–sO-sS Refer to the image below to answer the next question. 16. What is the protocol in the packet?*TCPICMPUDPIGRP Refer to the image below to answer the next question. 17. What is the protocol in the packet?*TCPICMPIGRPUDP Refer to the image below to answer the next question. 18. Refer to figure 3, what is the protocol in the packet?*TCPICMPIGRPUDP Refer to the image below to answer the next question. 19. What are the flags set in the packet?*PSH, ACKFIN, PSH, URGRST, ACKSYN, ACK Refer to the image below to answer the next question. 20. What are the flags set in the packet?*RST, ACKFIN, PSH, URGSYN, ACKPSH, ACK 21. A port that is < 1023 is also known as a _______________ port?*PrivilegedReservedEphemeralSpecial 22. A port that is > 1023 is also known as a _______________ port?*ReservedEphemeralSpecialPrivileged 23. Of the following stances on security which one is the easiest to manage risk of?*ParanoidPromiscuousPrudentPermissive 24. Which of the following protocols is considered reliable?*ICMPIGRPTCPUDP 25. Which of the following options is used to display the interfaces in tcpdump?*–D–G–A–L 26. Which of the following options is used to display passwords in tcpdump?*–L–D–A–G 27. Which of the following Wireshark filters would be used to display accepted GET request of a web server?*Both A and BNone of the aboveFrame contains 200 + OKFrame contains “200 OK” 28. To view the source port 22 in Wireshark you would enter which of the following filters?*tcp.srcport = 22tcp.port = 22tcp.port == 22tcp.srcport == 22 29. Which command in UNIX is used to change permissions of files and directories?*chmodattribchpermchflags 30. Which option of the kill command is considered the sure kill?*3591 31. Which UNIX utility will allow the viewing of compressed files without decompressing them?*rargzipnone of the abovezcat 32. Which of the following password files in UNIX is only readable by root?*/etc/proc/etc/password/etc/passwd/etc/shadow 33. Which of the following netstat options will display the interfaces on a UNIX machine?*–in–at–an–rn 34. Which of the following netstat options will display the routing table on a UNIX machine?*–in–an–rn–at 35. Which of the following lsof options will display the network connections?*–e–a–i–c 36. Which of the following lsof options will display the files and network connections a process if using?*–a–i–c–e 37. Within the VMware software what is the network switch that is used for the bridged network?*VMnet8VMnet0VMnet1VMnet5 38. 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