Which of the following attacks comes under the category of an active attack?

• A.Passive Eavesdropping
• B.Traffic analysis
• C.Replay attack
• D.Wireless footprinting

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Which of the following steps of the OPSEC process examines each aspect of the planned operation to identify OPSEC indicators that could reveal critical information and then compare those indicators with the adversary's intelligence collection capabilities identified in the previous action?

• A.Analysis of Threats
• B.Application of Appropriate OPSEC Measures
• C.Identification of Critical Information
• D.Analysis of Vulnerabilities
• E.Assessment of Risk

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Which of the following tools is described below? It is a set of tools that are used for sniffing passwords, e-mail, and HTTP traffic. Some of its tools include arpredirect, macof, tcpkill, tcpnice, filesnarf, and mailsnarf. It is highly effective for sniffing both switched and shared networks. It uses the arpredirect and macof tools for switching across switched networks. It can also be used to capture authentication information for FTP, telnet, SMTP, HTTP, POP, NNTP, IMAP,
etc.

• A.Dsniff
• B.Cain
• C.Libnids
• D.LIDS

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Which of the following provide an "always on" Internet access service when connecting to an ISP? Each correct answer represents a complete solution. (Choose two.)

• A.Digital modem
• B.Cable modem
• C.Analog modem
• D.DSL

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Which of the following types of transmission is the process of sending one bit at a time over a single transmission line?

• A.Unicast transmission
• B.Serial data transmission
• C.Multicast transmission
• D.Parallel data transmission

Correct Answer: B

In serial data transmission, one bit is sent after another (bit-serial) on a single transmission line. It is the simplest method of transmitting digital information from one point to another. This transmission is suitable for providing communication between two participants as well as for multiple participants. It is used for all long-haul communication and provides high data rates. It is also inexpensive and beneficial in transferring data over long distances. Answer option D is incorrect. In parallel data transmission, several data signals are sent simultaneously over several parallel channels. Parallel data transmission is faster than serial data transmission. It is used primarily for transferring data between devices at the same site. For instance, communication between a computer and printer is most often parallel, allowing the entire byte to be transferred in one operation. Answer option A is incorrect. The unicast transmission method is used to establish communication between a single host and a single receiver. Packets sent to a unicast address are delivered to the interface recognized by that IP address, as shown in the following figure: Answer option C is incorrect. The multicast transmission method is used to establish communication between a single host and multiple receivers. Packets are sent to all interfaces recognized by that IP address, as shown in the figure below:

ECCouncil 312-38 Exam

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