EC-COUNCIL EC-COUNCIL Certifications 312-38 Questions & Answers

• Question 301:

  How many layers are present in the TCP/IP model?

  A. 10

  B. 5

  C. 4

  D. 7

  Correct Answer: B

• Question 302:

  What is the range for registered ports?

  A. 1024 through 49151

  B. 0 through 1023

  C. Above 65535

  D. 49152 through 65535

  Correct Answer: A

• Question 303:

  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

  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).

• Question 304:

  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

  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 305:

  Which of the following protocols is a method for implementing virtual private networks?

  A. SSL

  B. PPTP

  C. TLS

  D. SNMP

  Correct Answer: B

• Question 306:

  Which of the following OSI layers defines the electrical and physical specifications for devices?

  A. Data link layer

  B. Presentation layer

  C. Physical layer

  D. Transport layer

  Correct Answer: C

• Question 307:

  Which of the following ranges of addresses can be used in the first octet of a Class B network address?

  A. 224-255

  B. 128-191

  C. 0-127

  D. 192-223

  Correct Answer: B

• Question 308:

  Which of the following ranges of addresses can be used in the first octet of a Class A network address?

  A. 0-127

  B. 192-223

  C. 224-255

  D. 128-191

  Correct Answer: A

• Question 309:

  Which of the following standards is approved by IEEE-SA for wireless personal area networks?

  A. 802.11a

  B. 802.15

  C. 802.16

  D. 802.1

  Correct Answer: B

• Question 310:

  Which of the following protocols supports source-specific multicast (SSM)?

  A. DHCP

  B. ARP

  C. DNS

  D. BGMP

  Correct Answer: D