[Free] Download New Updated (October 2016) ECCouncil 312-38 Real Exam 191-200

Ensurepass

QUESTION 191

In an Ethernet peer-to-peer network, which of the following cables is used to connect two computers, using RJ-45 connectors and Category-5 UTP cable?

 

A.

Serial

B.

Loopback

C.

Crossover

D.

Parallel

 

Correct Answer: C

Explanation:

In an Ethernet peer-to-peer network, a crossover cable is used to connect two computers, using RJ-45 connectors and Category-5 UTP cable.

Answer options D and A are incorrect. Parallel and serial cables do not use RJ-45 connectors and Category-5 UTP cable. Parallel cables are used to connect printe
rs, scanners etc., to computers, whereas serial cables are used to connect modems, digital cameras etc., to computers.

Answer option B is incorrect. A loopback cable is used for testing equipments.

 

QUESTION 192

You work as a Network Security Analyzer. You got a suspicious email while working on a forensic project. Now, you want to know the IP address of the sender so that you can analyze various information such as the actual location, domain information, operating system being used, contact information, etc. of the email sender with the help of various tools and resources. You also want to check whether this email is fake or real. You know that analysis of email headers is a good starting point in such cases. The email header of the suspicious email is given below:

 

clip_image002

 

What is the IP address of the sender of this email?

 

A.

209.191.91.180

B.

141.1.1.1

C.

172.16.10.90

D.

216.168.54.25

 

Correct Answer: D

Explanation:

The IP address of the sender of this email is 216.168.54.25. According to the scenario, you want to know the IP address of the sender so that you can analyze various information such as the actual location, domain information, operating system being used, contact information, etc. of the email sender with the help of various tools and resources. You also want to check whether this email is fake or real. You know that analysis of email headers is a good starting point in such cases. Once you start to analyze the email header, you get an entry entitled as X-Originating-IP. You know that in Yahoo, the X-Originating-IP is the IP address of the email sender and in this case, the required IP address is 216.168.54.25.

Answer options A, C, and B are incorrect. All these are the IP addresses of the Yahoo and Wetpaint servers.

 

 

 

 

 

 

 

QUESTION 193

Which of the following is the practice of sending unwanted e-mail messages, frequently with commercial content, in large quantities to an indiscriminate set of recipients? Each correct answer represents a complete solution. Choose all that apply.

 

A.

Email spoofing

B.

Junk mail

C.

E-mail spam

D.

Email jamming

 

Correct Answer: BC

Explanation:

E-mail spam, also known as unsolicited bulk email (UBE), junk mail, or unsolicited commercial email (UCE), is the practice of sending unwanted e-mail messages, frequently with commercial content, in large quantities to an indiscriminate set of recipients.

Answer option A is incorrect. Email spoofing is a fraudulent email activity in which the sender address and other parts of the email header are altered to appear as though the email originated from a different source. Email spoofing is a technique commonly used in spam and phishing emails to hide the origin of the email message. By changing certain properties of the email, such as the From, Return-Path and Reply-To fields (which can be found in the message header), ill- intentioned users can make the email appear to be from someone other than the actual sender. The result is that, although the email appears to come from the address indicated in the From field (found in the email headers), it actually comes from another source.

Answer option D is incorrect. Email jamming is the use of sensitive words in e-mails to jam the authorities that listen in on them by providing a form of a red herring and an intentional annoyance. In this attack, an attacker deliberately includes “sensitive” words and phrases in otherwise innocuous emails to ensure that these are picked up by the monitoring systems. As a result the senders of these emails will eventually be added to a “harmless” list and their emails will be no longer intercepted, hence it will allow them to regain some privacy.

 

 

QUESTION 194

Which of the following is a worldwide organization that aims to establish, refine, and promote Internet security standards?

 

A.

ANSI

B.

WASC

C.

IEEE

D.

ITU

 

Correct Answer: B

Explanation:

Web Application Security Consortium (WASC) is a worldwide organization that aims to establish, refine, and promote Internet security standards. WASC is vendor-neutral, although members may belong to corporations involved in the research, development, design, and distribution of Web security-related products.

Answer option A is incorrect. ANSI (American National Standards Institute) is the primary organization for fostering the development of techn
ology standards in the United States. ANSI works with industry groups and is the U.S. member of the International Organization for Standardization (ISO) and the International Electro-technical Commission (IEC). Long-established computer standards from ANSI include the American Standard Code for Information Interchange (ASCII) and the Small Computer System Interface (SCSI).

Answer option D is incorrect. The International Telecommunication Union (ITU) is an organization established to standardize and regulate international radio and telecommunications. Its main tasks include standardization, allocation of the radio spectrum, and organizing interconnection arrangements between different countries to allow international phone calls. ITU sets standards for global telecom networks.

The ITU’s telecommunications division (ITU-T) produces more than 200 standard recommendations each year in the converging areas of telecommunications, information technology, consumer electronics, broadcasting and multimedia communications. ITU was streamlined into the following three sectors:

ITU-D (Telecommunication Development)

ITU-R (Radio communication)

ITU-T (Telecommunication Standardization)

Answer option C is incorrect. The Institute of Electrical and Electronic Engineers (IEEE) is a society of technical professionals. It promotes the development and application of electro- technology and allied sciences. IEEE develops communications and network standards, among other activities. The organization publishes number of journals, has many local chapters, and societies in specialized areas.

 

 

QUESTION 195

Which of the following statements are TRUE about Demilitarized zone (DMZ)? Each correct answer represents a complete solution. Choose all that apply.

 

A.

In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network like the Internet.

B.

Demilitarized zone is a physical or logical sub-network that contains and exposes external services of an organization to a larger un-trusted network.

C.

The purpose of a DMZ is to add an additional layer of security to the Local Area Network of an organization.

D.

Hosts in the DMZ have full connectivity to specific hosts in the internal network.

 

Correct Answer: ABC

Explanation:

A demilitarized zone (DMZ) is a physical or logical subnetwork that contains and exposes external services of an organization to a larger network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization’s Local Area Network (LAN); an external attacker only has access to equipment in the DMZ, rather than the whole of the network. Hosts in the DMZ have limited connectivity to specific hosts in the internal network, though communication with other hosts in the DMZ and to the external network is allowed. This allows hosts in the DMZ to provide services to both the internal and external networks, while an intervening firewall controls the traffic between the DMZ servers and the internal network clients. In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network such as the Internet.

 

 

QUESTION 196

Which of the following network scanning tools is a TCP/UDP port scanner that works as a ping sweeper and hostname resolver?

 

A.

Hping

B.

SuperScan

C.

Netstat

D.

Nmap

 

Correct Answer: B

Explanation:

SuperScan is a TCP/UDP port scanner. It also works as a ping sweeper and hostname resolver. It can ping a given range of IP addresses and resolve the host name of the remote system.

The features of SuperScan are as follows:

It scans any port range from a built-in list or any given range.

It performs ping scans and port scans using any IP range.

It modifies the port list and port descriptions using the built in editor.

It connects to any discovered open port using user-specified “helper” applications.

It has the transmission speed control utility.

Answer option D is incorrect. Nmap is a free open-source utility for network exploration and security auditing. It is used to discover computers and services on a computer network, thus creating a “map” of the network. Just like many simple port scanners, Nmap is capable of discovering passive services. In addition, Nmap may be able to determine various details about the remote computers. These include operating system, device type, uptime, software product used to run a service, exact version number of that product, presence of some firewall techniques and, on a local area networ
k, even vendor of the remote network card. Nmap runs on Linux, Microsoft Windows, etc.

Answer option C is incorrect. Netstat (network statistics) is a command-line tool that displays network connections (both incoming and outgoing), routing tables, and a number of network interface statistics. It is available on Unix, Unix-like, and Windows NT-based operating systems. It is used to find problems on the network and to determine the amount of traffic on the network as a performance measurement.

Answer option A is incorrect. Hping is a free packet generator and analyzer for the TCP/IP protocol. Hping is one of the de facto tools for security auditing and testing of firewalls and networks. The new version of hping, hping3, is scriptable using the Tcl language and implements an engine for string based, human readable description of TCP/IP packets, so that the programmer can write scripts related to low level TCP/IP packet manipulation and analysis in very short time. Like most tools used in computer security, hping is useful to both system administrators and crackers (or script kiddies).

 

 

QUESTION 197

Which of the following is a network layer protocol used to obtain an IP address for a given hardware (MAC) address?

 

A.

IP

B.

PIM

C.

RARP

D.

ARP

 

Correct Answer: C

Explanation:

Reverse Address Resolution Protocol (RARP) is a Network layer protocol used to obtain an IP address for a given hardware (MAC) address. RARP is sort of the reverse of an ARP. Common protocols that use RARP are BOOTP and DHCP.

Answer option D is incorrect. Address Resolution Protocol (ARP) is a network maintenance protocol of the TCP/IP protocol suite. It is responsible for the resolution of IP addresses to media access control (MAC) addresses of a network interface card (NIC). The ARP cache is used to maintain a correlation between a MAC address and its corresponding IP address. ARP provides the protocol rules for making this correlation and providing address conversion in both directions. ARP is limited to physical network systems that support broadcast packets.

Answer option B is incorrect. Protocol-Independent Multicast (PIM) is a family of multicast routing protocols for Internet Protocol (IP) networks that provide one-to-many and many-to-many distribution of data over a LAN, WAN, or the Internet. It is termed protocol-independent because PIM does not include its own topology discovery mechanism, but instead uses routing information supplied by other traditional routing protocols, such as Border Gateway Protocol (BGP).

Answer option A is incorrect. The Internet Protocol (IP) is a protocol used for communicating data across a packet-switched inter-network using the Internet Protocol Suite, also referred to as TCP/IP.

IP is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the task of delivering distinguished protocol datagrams (packets) from the source host to the destination host solely based on their addresses. For this purpose, the Internet Protocol defines addressing methods and structures for datagram encapsulation. The first major version of addressing structure, now referred to as Internet Protocol Version 4 (IPv4), is still the dominant protocol of the Internet, although the successor, Internet Protocol Version 6 (IPv6), is being deployed actively worldwide.

 

 

QUESTION 198

Fill in the blank with the appropriate term. A ______________ is a term in computer terminology used for a trap that is set to detect, deflect, or in some manner counteract attempts at unauthorized use of information systems.

 

Correct Answer: honeypot

Explanation:

A honeypot is a term in computer terminology use
d for a trap that is set to detect, deflect, or in some manner counteract attempts at unauthorized use of information systems. Generally it consists of a computer, data, or a network site that appears to be part of a network, but is actually isolated, and monitored, and which seems to contain information or a resource of value to attackers.

 

 

QUESTION 199

Fill in the blank with the appropriate term. A ______________ gateway is a type of network gateway that provides the added capability to control devices across the Internet.

 

Correct Answer: home automation

Explanation:

A home automation gateway is a type of network gateway that provides the added capability to control devices across the Internet. Most gateways plug in to the home broadband router (and a wall outlet for power). When connected to a router that has Internet connectivity, the automation gateway helps in enabling computers and Web-enabled phones to remotely access automation devices at home.

 

 

QUESTION 200

Which of the following is a network maintenance protocol of the TCP/IP protocol suite that is responsible for the resolution of IP addresses to media access control (MAC) addresses of a network interface card (NIC)?

 

A.

DHCP

B.

ARP

C.

PIM

D.

RARP

 

Correct Answer: B

Explanation:

Address Resolution Protocol (ARP) is a network maintenance protocol of the TCP/IP protocol suite. It is responsible for the resolution of IP addresses to media access control (MAC) addresses of a network interface card (NIC). The ARP cache is used to maintain a correlation between a MAC address and its corresponding IP address. ARP provides the protocol rules for making this correlation and providing address conversion in both directions. ARP is limited to physical network systems that support broadcast packets.

Answer option A is incorrect. The Dynamic Host Configuration Protocol (DHCP) is a computer networking protocol used by hosts (DHCP clients) to retrieve IP address assignments and other configuration information. DHCP uses a client-server architecture. The client sends a broadcast request for configuration information. The DHCP server receives the request and responds with configuration information from its configuration database. In the absence of DHCP, all hosts on a network must be manually configured individually – a time-consuming and often error-prone undertaking. DHCP is popular with ISP’s because it allows a host to obtain a temporary IP address.

Answer option D is incorrect. Reverse Address Resolution Protocol (RARP) is a Network layer protocol used to obtain an IP address for a given hardware (MAC) address. RARP is sort of the reverse of an ARP. Common protocols that use RARP are BOOTP and DHCP.

Answer option C is incorrect. Protocol-Independent Multicast (PIM) is a family of multicast routing protocols for Internet Protocol (IP) networks that provide one-to-many and many-to-many distribution of data over a LAN, WAN, or the Internet. It is termed protocol-independent because PIM does not include its own topology discovery mechanism, but instead uses routing information supplied by other traditional routing protocols, such as Border Gateway Protocol (BGP).

 

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