EC-COUNCIL 312-50V10 Online Practice Questions and Exam Preparation

EC-COUNCIL 312-50V10 Online Questions & Answers

• Question 641:

  Identify the UDP port that Network Time Protocol (NTP) uses as its primary means of communication?

  A. 123
  B. 161
  C. 69
  D. 113
  A. 123

• Question 642:

  Code injection is a form of attack in which a malicious user:

  A. Inserts text into a data field that gets interpreted as code
  B. Gets the server to execute arbitrary code using a buffer overflow
  C. Inserts additional code into the JavaScript running in the browser
  D. Gains access to the codebase on the server and inserts new code
  A. Inserts text into a data field that gets interpreted as code

• Question 643:

  Which of the following is used to indicate a single-line comment in structured query language (SQL)?

  A. -
  B. ||
  C. %%
  D. ''
  A. -

• Question 644:

  Which of the following is a wireless network detector that is commonly found on Linux?

  A. Kismet
  B. Abel
  C. Netstumbler
  D. Nessus
  A. Kismet

• Question 645:

  Null sessions are un-authenticated connections (not using a username or password.) to an NT or 2000 system. Which TCP and UDP ports must you filter to check null sessions on your network?

  A. 137 and 139
  B. 137 and 443
  C. 139 and 443
  D. 139 and 445
  D. 139 and 445

• Question 646:

  Which of the following is a characteristic of Public Key Infrastructure (PKI)?

  A. Public-key cryptosystems are faster than symmetric-key cryptosystems.
  B. Public-key cryptosystems distribute public-keys within digital signatures.
  C. Public-key cryptosystems do not require a secure key distribution channel.
  D. Public-key cryptosystems do not provide technical non-repudiation via digital signatures.
  B. Public-key cryptosystems distribute public-keys within digital signatures.

• Question 647:

  Which of the following BEST describes how Address Resolution Protocol (ARP) works?

  A. It sends a reply packet for a specific IP, asking for the MAC address
  B. It sends a reply packet to all the network elements, asking for the MAC address from a specific IP
  C. It sends a request packet to all the network elements, asking for the domain name from a specific IP
  D. It sends a request packet to all the network elements, asking for the MAC address from a specific IP
  D. It sends a request packet to all the network elements, asking for the MAC address from a specific IP

• Question 648:

  While examining audit logs, you discover that people are able to telnet into the SMTP server on port 25. You would like to block this, though you do not see any evidence of an attack or other wrong doing. However, you are concerned about affecting the normal functionality of the email server. From the following options choose how best you can achieve this objective?

  A. Block port 25 at the firewall.
  B. Shut off the SMTP service on the server.
  C. Force all connections to use a username and password.
  D. Switch from Windows Exchange to UNIX Sendmail.
  E. None of the above.
  E. None of the above.

• Question 649:

  Which of the following is a strong post designed to stop a car?

  A. Gate
  B. Fence
  C. Bollard
  D. Reinforced rebar
  C. Bollard

• Question 650:

  The security administrator of ABC needs to permit Internet traffic in the host 10.0.0.2 and UDP traffic in the host 10.0.0.3. He also needs to permit all FTP traffic to the rest of the network and deny all other traffic. After he applied his ACL configuration in the router, nobody can access to the ftp, and the permitted hosts cannot access the Internet. According to the next configuration, what is happening in the network?

  

  A. The ACL 104 needs to be first because is UDP
  B. The ACL 110 needs to be changed to port 80
  C. The ACL for FTP must be before the ACL 110
  D. The first ACL is denying all TCP traffic and the other ACLs are being ignored by the router
  D. The first ACL is denying all TCP traffic and the other ACLs are being ignored by the router