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Pass Guaranteed Quiz 312-38 - EC-Council Certified Network Defender CND–Reliable Sample Test Online

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EC-COUNCIL EC-Council Certified Network Defender CND Sample Questions (Q97-Q102):

NEW QUESTION # 97
Which of the following is the best known Windows tool for finding open wireless access points?

A. Dsniff
B. Netstumbler
C. Netcat
D. Snort

Answer: B

NEW QUESTION # 98
Which of the following routing metrics is the sum of the costs associated with each link traversed?

A. Routing delay
B. Bandwidth
C. Communication cost
D. Path length

Answer: D

NEW QUESTION # 99
In what type of IoT communication model do devices interact with each other through the internet, primarily using protocols such as ZigBee, Z-Wave, or Bluetooth?

A. Device-to-Device Model
B. Back-End Data-Sharing Model
C. Device-to-Cloud Model
D. Device-to-Gateway Model

Answer: A

Explanation:
In the context of IoT communication models, the Device-to-Device (D2D) model refers to the direct interaction between devices without the need for intermediary devices or services. This model is characterized by the use of protocols such as ZigBee, Z-Wave, or Bluetooth, which are designed to facilitate direct communication between devices in close proximity. These protocols are commonly used in home automation, where devices like sensors, lights, and locks need to communicate with each other to perform their functions effectively.
References: The information provided is based on my training data up to September 2021, which includes knowledge of various IoT communication protocols and their applications. For the most current and detailed information, please refer to the latest Certified Network Defender (CND) documents and study guides from the EC-Council or other authoritative sources on IoT communication models.

NEW QUESTION # 100
On which layer of the OSI model does the packet filtering firewalls work?

A. Session Layer
B. Network Layer
C. Physical Layer
D. Application Layer

Answer: B

Explanation:
Packet filtering firewalls operate at the Network Layer of the OSI model. This layer is responsible for the transmission of data packets across network boundaries, which is a fundamental function of packet filtering firewalls. They analyze incoming and outgoing packets and make decisions based on set rules, such as IP addresses, protocols, and ports, to allow or block traffic. This is crucial for protecting the network from unauthorized access and potential threats.

NEW QUESTION # 101
Which of the following is a network layer protocol used to obtain an IP address for a given hardware (MAC) address?

A. IP
B. ARP
C. RARP
D. PIM

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.

NEW QUESTION # 102
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