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Q301. Jason works in the sales and marketing department for a very large advertising agency located in Atlanta. Jason is working on a very important marketing campaign for his company's largest client. Before the project could be completed and implemented, a competing advertising company comes out with the exact same marketing materials and advertising, thus rendering all the work done for Jason's client unusable. Jason is questioned about this and says he has no idea how all the material ended up in the hands of a competitor.
Without any proof, Jason's company cannot do anything except move on. After working on another high profile client for about a month, all the marketing and sales material again ends up in the hands of another competitor and is released to the public before Jason's company can finish the project. Once again, Jason says that he had nothing to do with it and does not know how this could have happened. Jason is given leave with pay until they can figure out what is going on.
Jason's supervisor decides to go through his email and finds a number of emails that were sent to the competitors that ended up with the marketing material. The only items in the emails were attached jpg files, but nothing else. Jason's supervisor opens the picture files, but cannot find anything out of the ordinary with them.
What technique has Jason most likely used?
A. Stealth Rootkit Technique
B. Snow Hiding Technique
C. ADS Streams Technique
D. Image Steganography Technique
Answer: D
Q302. Sara is using the nslookup command to craft queries to list all DNS information (such as Name Servers, host names, MX records, CNAME records, glue records (delegation for child Domains), zone serial number, TimeToLive (TTL) records, etc) for a Domain. What do you think Sara is trying to accomplish? Select the best answer.
A. A zone harvesting
B. A zone transfer
C. A zone update
D. A zone estimate
Answer: B
Explanation: The zone transfer is the method a secondary DNS server uses to update its information from the primary DNS server. DNS servers within a domain are organized using a master-slave method where the slaves get updated DNS information from the master DNS. One should configure the master DNS server to allow zone transfers only from secondary (slave) DNS servers but this is often not implemented. By connecting to a specific DNS server and successfully issuing the ls –d domain-name > file-name you have initiated a zone transfer.
Q303. Maintaining a secure Web server requires constant effort, resources, and vigilance from an organization. Securely administering a Web server on a daily basis is an essential aspect of Web server security.
Maintaining the security of a Web server will usually involve the following steps:
1. Configuring, protecting, and analyzing log files
2. Backing up critical information frequently
3. Maintaining a protected authoritative copy of the organization's Web content
4. Establishing and following procedures for recovering from compromise
5. Testing and applying patches in a timely manner
6. Testing security periodically.
In which step would you engage a forensic investigator?
A. 1
B. 2
C. 3
D. 4
E. 5
F. 6
Answer: D
Q304. You are the CIO for Avantes Finance International, a global finance company based in Geneva. You are responsible for network functions and logical security throughout the entire corporation. Your company has over 250 servers running Windows Server, 5000 workstations running Windows Vista, and 200 mobile users working from laptops on Windows 7.
Last week, 10 of your company's laptops were stolen from salesmen while at a conference in Amsterdam. These laptops contained proprietary company information. While doing damage assessment on the possible public relations nightmare this may become, a news story leaks about the stolen laptops and also that sensitive information from those computers was posted to a blog online.
What built-in Windows feature could you have implemented to protect the sensitive information on these laptops?
A. You should have used 3DES which is built into Windows
B. If you would have implemented Pretty Good Privacy (PGP) which is built into Windows, the sensitive information on the laptops would not have leaked out
C. You should have utilized the built-in feature of Distributed File System (DFS) to protect the sensitive information on the laptops
D. You could have implemented Encrypted File System (EFS) to encrypt the sensitive files on the laptops
Answer: D
Q305. Steve scans the network for SNMP enabled devices. Which port number Steve should scan?
A. 69
B. 150
C. 161
D. 169
Answer: C
Explanation: The SNMP default port is 161. Port 69 is used for tftp, 150 is for SQL-NET and 169 is for SEND.
Q306. What port scanning method is the most reliable but also the most detectable?
A. Null Scanning
B. Connect Scanning
C. ICMP Scanning
D. Idlescan Scanning
E. Half Scanning
F. Verbose Scanning
Answer: B
Explanation: A TCP Connect scan, named after the Unix connect() system call is the most accurate scanning method. If a port is open the operating system completes the TCP three-way handshake, and the port scanner immediately closes the connection.
Q307. Which of the following statement correctly defines ICMP Flood Attack? (Select 2 answers) A. Bogus ECHO reply packets are flooded on the network spoofing the IP and MAC address
B. The ICMP packets signal the victim system to reply and the combination of traffic saturates the bandwidth of the victim's network
C. ECHO packets are flooded on the network saturating the bandwidth of the subnet causing denial of service
D. A DDoS ICMP flood attack occurs when the zombies send large volumes of ICMP_ECHO_REPLY packets to the victim system.
Answer: BD
Q308. Which of the following wireless technologies can be detected by NetStumbler? (Select all that apply)
A. 802.11b
B. 802.11e
C. 802.11a
D. 802.11g
E. 802.11
Answer: ACD
Explanation: If you check the website, cards for all three (A, B, G) are supported. See: http://www.stumbler.net/
Q309. What is the purpose of firewalking?
A. It's a technique used to discover Wireless network on foot
B. It's a technique used to map routers on a network link
C. It's a technique used to discover interface in promiscuous mode
D. It's a technique used to discover what rules are configured on a gateway
Answer: D
Explanation: Firewalking uses a traceroute-like IP packet analysis to determine whether or not a particular packet can pass from the attacker’s host to a destination host through a packet-filtering device. This technique can be used to map ‘open’ or ‘pass through’ ports on a gateway. More over, it can determine whether packets with various control information can pass through a given gateway.
Q310. Bob is a Junior Administrator at ABC Company. On One of Linux machine he entered the following firewall rules:
iptables –t filter –A INPUT -p tcp --dport 23 –j DROP
Why he entered the above line?
A. To accept the Telnet connection
B. To deny the Telnet connection
C. The accept all connection except telnet connection
D. None of Above
Answer: B
Explanation: -t, --table
This option specifies the packet matching table which the command should operate on. If the kernel is configured with automatic module loading, an attempt will be made to load the appropriate module for that table if it is not already there. The tables are as follows: filter This is the default table, and contains the built-in chains INPUT (for packets coming into the box itself), FORWARD (for packets being routed through the box), and OUTPUT (for locally-generated packets). nat This table is consulted when a packet which is creates a new connection is encountered. It consists of three built-ins: PREROUTING (for altering packets as soon as they come in), OUTPUT (for altering locally-generated packets before routing), and POSTROUTING (for altering packets as they are about to go out). mangle This table is used for specialized packet alteration. It has two built-in chains: PREROUTING (for altering incoming packets before routing) and OUTPUT (for altering locally-generated packets before routing).
-A, --append
Append one or more rules to the end of the selected chain. When the source and/or destination names resolve to more than one address, a rule will be added for each possible address combination. -p, --protocol [!] protocol The protocol of the rule or of the packet to check. The specified protocol can be one of tcp, udp, icmp, or all, or it can be a numeric value, representing one of these protocols or a different one. Also a protocol name from /etc/protocols is allowed. A "!" argument before the protocol inverts the test. The number zero is equivalent to all. Protocol all will match with all protocols and is taken as default when this option is omitted. All may not be used in in combination with the check command. --destination-port [!] [port[:port]] Destination port or port range specification. The flag --dport is an alias for this option. -j, --jump target
This specifies the target of the rule; ie. what to do if the packet matches it. The target can be a user-defined chain (not the one this rule is in), one of the special builtin targets which decide the fate of the packet immediately, or an extension (see EXTENSIONS below). If this option is omitted in a rule, then matching the rule will have no effect on the packet's fate, but the counters on the rule will be incremented.
