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Ethical Hacker Certified Questions 251–255 (page: 52)

Updated On: 10-Feb-2026

The follows is an email header. What address is that of the true originator of the message? Return-Path: <bgates@microsoft.com>
Received: from smtp.com (fw.emumail.com [215.52.220.122].
by raq-221-181.ev1.net (8.10.2/8.10.2. with ESMTP id h78NIn404807 for <mikeg@thesolutionfirm.com>; Sat, 9 Aug 2003 18:18:50 -0500
Received: (qmail 12685 invoked from network.; 8 Aug 2003 23:25:25 -0000
Received: from ([19.25.19.10].
by smtp.com with SMTP
Received: from unknown (HELO CHRISLAPTOP. (168.150.84.123. by localhost with SMTP; 8 Aug 2003 23:25:01 -0000
From: "Bill Gates" <bgates@microsoft.com> To: "mikeg" <mikeg@thesolutionfirm.com> Subject: We need your help!
Date: Fri, 8 Aug 2003 19:12:28 -0400
Message-ID: <51.32.123.21@CHRISLAPTOP>
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_NextPart_000_0052_01C35DE1.03202950" X-Priority: 3 (Normal.
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook, Build 10.0.2627
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal

  1. 19.25.19.10
  2. 51.32.123.21
  3. 168.150.84.123
  4. 215.52.220.122
  5. 8.10.2/8.10.2

Answer(s): C

Explanation:

Spoofing can be easily achieved by manipulating the "from" name field, however, it is much more difficult to hide the true source address. The "received from" IP address 168.150.84.123 is the true source of the



Bob wants to prevent attackers from sniffing his passwords on the wired network. Which of the following lists the best options?

  1. RSA, LSA, POP
  2. SSID, WEP, Kerberos
  3. SMB, SMTP, Smart card
  4. Kerberos, Smart card, Stanford SRP

Answer(s): D

Explanation:

Kerberos, Smart cards and Stanford SRP are techniques where the password never leaves the computer.



Which tool/utility can help you extract the application layer data from each TCP connection from a log file into separate files?

  1. Snort
  2. argus
  3. TCPflow
  4. Tcpdump

Answer(s): C

Explanation:

Tcpflow is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis or debugging. A program like 'tcpdump' shows a summary of packets seen on the wire, but usually doesn't store the data that's actually being transmitted. In contrast, tcpflow reconstructs the actual data streams and stores each flow in a separate file for later analysis.



Which of the following display filters will you enable in Ethereal to view the three-way handshake for a connection from host 192.168.0.1?

  1. ip == 192.168.0.1 and tcp.syn
  2. ip.addr = 192.168.0.1 and syn = 1
  3. ip.addr==192.168.0.1 and tcp.flags.syn
  4. ip.equals 192.168.0.1 and syn.equals on

Answer(s): C



John the hacker is sniffing the network to inject ARP packets. He injects broadcast frames onto the wire to conduct MiTM attack. What is the destination MAC address of a broadcast frame?

  1. 0xFFFFFFFFFFFF
  2. 0xAAAAAAAAAAAA
  3. 0xBBBBBBBBBBBB
  4. 0xDDDDDDDDDDDD

Answer(s): A

Explanation:

0xFFFFFFFFFFFF is the destination MAC address of the broadcast frame.



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