1. Select the correct statement(s) regarding the Address Resolution Protocol (AR

Question

1. Select the correct statement(s) regarding the Address Resolution Protocol (ARP).

a. When an IP datagram is received, ARP initially inspects its cache to see if the IP address mapping already exists

b. ARP broadcasts the received IP address to all stations within the common network if not found within its cache

c. ARP maps network addresses to data link layer addresses

d. All are correct statements

2.

Select the benefit(s) of implementing a NAT.

a. enables an intranet to connect to the Internet

b. reduces exposure of the intranet to external Internet threats

c. enables an intranet to easily switch ISPs

d. All of the above

3. Select the correct statement(s) regarding ICMP.

a. ICMP does not make IP a reliable protocol

b. ICMP is used to convey issues impacting network operations

c. ICMP information is useful in making routing decisions

d. All of the above

4. DNS is a network of decentralized servers that translate URLs (Uniform Resource Locators) into IP address.

True

False

5. Select the correct statement(s) regarding IPv6.

a. Increases IP addressing space to 128 bits

b. Supports quality-of-service (QoS)

c. Simplifies datagram header

d. All of the above

a. When an IP datagram is received, ARP initially inspects its cache to see if the IP address mapping already exists

b. ARP broadcasts the received IP address to all stations within the common network if not found within its cache

c. ARP maps network addresses to data link layer addresses

d. All are correct statements

2.

Select the benefit(s) of implementing a NAT.

a. enables an intranet to connect to the Internet

b. reduces exposure of the intranet to external Internet threats

c. enables an intranet to easily switch ISPs

d. All of the above

3. Select the correct statement(s) regarding ICMP.

a. ICMP does not make IP a reliable protocol

b. ICMP is used to convey issues impacting network operations

c. ICMP information is useful in making routing decisions

d. All of the above

4. DNS is a network of decentralized servers that translate URLs (Uniform Resource Locators) into IP address.

True

False

5. Select the correct statement(s) regarding IPv6.

a. Increases IP addressing space to 128 bits

b. Supports quality-of-service (QoS)

c. Simplifies datagram header

d. All of the above

Explanation / Answer

1. d. All are correct statements

When an IP datagram is received, ARP initially inspects its cache to see if the IP address mapping already exists and ARP maps network address to the data link layer. It also satisfies second option too.

2. c. enables an intranet to easily switch ISPs

Network Address Translation is useful in easy switching of an ISP.

3. c. ICMP information is useful in making routing decisions

Each IP makes its own routing decisions and its not that much easy to trace the routing of particular IP. ICMP informaation is useful in getting such information on routing decisions.

4. True

Domain Naming System is a network of decentralized servers which translate URL's.

5. d. All of the above

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