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C. ARP D. ICMP Answer: C Explanation:

ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

Incorrect answers:

A: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts.

B: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP.

D: ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p 62-63.

QUESTION 76:

Which of the following protocols suites are primarily responsible for managing IP multicast groups? A. ARP B. IP C. ICMP D. IGMP Answer: D Explanation:

IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts

Actualtests.com - The Power of Knowing Incorrect answers:

A: ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

B: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP

C: ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p 62-63.

QUESTION 77:

Which of the following protocol suites provides maintenance and reporting functions? A. ICMP B. IGMP C. ARP D. IP Answer: A Explanation:

ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Incorrect answers:

B: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts

C: ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

D: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p 62-63.

QUESTION 78:

Actualtests.com - The Power of Knowing A. Responsible for IP addressing

B. Responsible for resolving IP addressing C. Responsible for managing IP multicast groups D. Provides maintenance and reporting functions

Answer: A

Explanation:

IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP

Incorrect answers:

B: ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

C: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts

D: ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p. 62-63

QUESTION 79:

Which of the following definitions suits the protocols suite ARP?

A. Responsible for IP addressing

B. Responsible for resolving IP addressing C. Responsible for managing IP multicast groups D. Provides maintenance and reporting functions

Answer: B

Explanation:

ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

Incorrect answers:

A: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP

C: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts

Actualtests.com - The Power of Knowing

D: ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p. 62-63

QUESTION 80:

Which of the following definitions suits the protocols suite IGMP?

A. Responsible for IP addressing

B. Responsible for resolving IP addressing C. Responsible for managing IP multicast groups D. Provides maintenance and reporting functions

Answer: C

Explanation:

IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts Incorrect answers:

A: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP also fragments and reassembles message packets. IP only routes information; it does not verify it for accuracy. Accuracy checking is the responsibility of TCP

B: ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

D: ICMP (Internet Control Management Protocol) provides maintenance and reporting functions. ICMP is the protocol used by the PING program.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p. 62-63

QUESTION 81:

Which of the following definitions suits the protocols suite ICMP?

A. Responsible for IP addressing

B. Responsible for resolving IP addressing C. Responsible for managing IP multicast groups D. Provides maintenance and reporting functions

Answer: D

Explanation:

Actualtests.com - The Power of Knowing functions. ICMP is the protocol used by the PING program

Incorrect answers:

A: IP (Internet Protocol) is a routable protocol, and it is responsible for IP addressing. IP verify it for accuracy. Accuracy

checking is the responsibility of TCP

B: ARP (Address Resolution Protocol) is responsible for resolving IP addresses to Network Interface layer addresses, including hardware addresses. ARP can resolve an IP address to a Media Access Control (MAC) address

C: IGMP (Internet Group Management Protocol) is responsible primarily for managing IP multicast groups. IP multicasts can send messages or packets to a specified group of hosts.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p. 62-63

QUESTION 82:

Which of the following options is the correct sequence for the TCP Three-Way Handshake?

A. Host A, SYN, SYN/ACK, ACK, Host B B. Host A, ACK, SYN/ACK, Host B, SYN C. Host A, SYN/ACK, ACK, SYN, Host B D. Host A, ACK, SYN/ACK, SYN, Host B

Answer: A

Explanation:

A host called a client originates this connection. The client sends a TCP segment, or message, to the server. This client segment includes an Initial Sequence Number (ISN) for the connection and a window size. The server responds with a TCP segment that contains its Initial Sequence Number, and a window size indicating its buffer or window size. The client then sends back an acknowledgement of the server's sequence number. Incorrect answers:

B, C, D: They are all incorrect sequences and would never work and therefore do not take part in the Three-Way Handshake.

Reference:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p. 66.

QUESTION 83:

Which of the following attacks are being referred to if the attack involves the attacker gaining access to a host in the network and logically disconnecting it?

Actualtests.com - The Power of Knowing B. UDP Attack C. ICMP Attacks D. Smurf Attacks Answer: A Explanation:

TCP/IP hijacking, also called active sniffing, involves the attacker gaining access to a host in the network and logically disconnecting it from the network. The attacker then inserts another machine with the same IP address.

This happens quickly and gives the attacker access to the session and to all of the information on the original system. The server will not know this has occurred and will respond as if the client is trusted.

Incorrect answers:

B: UDP attack attacks either a maintenance protocol or a UDP service in order to overload services and initiate a DoS situation. UDP attacks can also exploit UDP protocols. UDP packets are not connection-oriented and do not require the

synchronization process described in the previous section. UDP packets, however, are susceptible to interception, and UDP can be attacked

C

: ICMP attacks occur by triggering a response from the ICMP protocol when it responds to a seemingly legitimate maintenance request. ICMP supports maintenance and

reporting in a TCP/IP network. ICMP is part of the IP level of the protocol suite. Several programs, including PING, use the ICMP protocol. Until fairly recently, ICMP was regarded as a benign protocol that was incapable of very much damage.

D: Smurf attacks are becoming common and can create pure havoc in a network. A smurf attack uses IP spoofing and broadcasting to send a PING to a group of hosts in a network. When a host is pinged, it sends back ICMP message traffic information indicating status to the originator. If a broadcast is sent to a network, all of the hosts will answer back to the ping. The result of this is an overload of the network and the target system

References:

Mike Pastore and Emmett Dulaney, Security+ Study Guide, 2nd Edition, Sybex, Alameda, 2004, p 72-73.

QUESTION 84:

Which of the following protocols is used to transmit e-mail between the two e-mail servers?

A. Post Office Protocol, version 3 (POP3) B. Simple Mail Transfer Protocol (SMTP) C. Internet Control Message Protocol (ICMP)

D. Internet Message Access Protocol, version 4 (IMAP4)

Answer: B

Actualtests.com - The Power of Knowing Incorrect Answers:

A, D: POP3 and IMAP4 transmit e-mail between the e-mail client and the e-mail server. C: ICMP (Internet Control Message Protocol) is used for network management and control. It provides error testing and reporting for TCP/IP.

References:

David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 78-79, 116, 207.

QUESTION 85:

Which of the following protocols is used to transmit e-mail between an e-mail client and an e-mail server?

A. Hypertext Transfer Protocol (HTTP) B. Post Office Protocol, version 3 (POP3) C. Simple Mail Transfer Protocol (SMTP) D. Internet Control Message Protocol (ICMP)

Answer: B

POP3 and IMAP4 transmit e-mail between the e-mail client and the e-mail server. Incorrect Answers:

A: HTTP is the protocol that is used by a web browser to communicate with web severs. It is not used for transmitting e-mail between the e-mail client and the e-mail server. C: SMTP (Simple Mail Transfer Protocol) is used for transmitting e-mail messages from one e-mail server to another, not between the e-mail server and the e-mail client.

D: ICMP (Internet Control Message Protocol) is used for network management and control. It provides error testing and reporting for TCP/IP.

References:

David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 78-79, 116, 207.

QUESTION 86:

Which of the following provides error reporting in TCP/IP?

A. NNTP