Question 1

Which statement describes the IPv6 standard?
A) Using a security protocol will become an option when IPv6 globally adopted.
B) Each packet's payload should be less than 50 KB.
C) IPv6 packets have a simpler header structure than IPv4 packets.
D) Unicasting, multicasting, and broadcasting are supported by IPv6.
E) SSL is a security protocol preferred by IPv6.

Accepted Answer

IPv6 features a simplified header structure compared to IPv4, which helps improve packet processing efficiency. Unlike IPv4, IPv6 headers are designed to minimize header overhead and simplify packet processing.

Question 2

255.255.255.255 is an IP address for
A) Multicasting
B) Anycasting
C) Limited broadcasting
D) Unicasting
E) Directed broadcasting

Accepted Answer

255.255.255.255 is reserved for limited broadcasting, which means that a packet sent to this address will be received by all hosts on the local network, but not forwarded by routers. This is often used for initial network testing or DHCP requests. It is not used for multicasting, anycasting, or directed broadcasting.

Question 3

What information is used to determine the subnet part of an IP address?
A) Default gateway
B) Subnet mask
C) Host name
D) Domain name
E) Network size

Accepted Answer

The subnet mask is used to determine the subnet part of an IP address. It is a 32-bit number that is applied to the IP address to split it into network and host portions. The subnet mask can be written in decimal or binary notation.

Question 4

"Localhost" is the domain name for which IP address?
A) 127.0.0.1
B) 192.168.1.1
C) 255.255.255.255
D) 224.1.2.3
E) 10.0.0.1

Accepted Answer

Localhost is a hostname that refers to the local computer's IP address. The IP address for localhost is always 127.0.0.1, which is the loopback address of the computer. Other IP addresses listed are not associated with localhost.

Question 5

The following nodes EXCEPT ______ require "preferred" configuration of at least one permanent (or static) IP:
A) Router
B) Firewall device
C) Smartphone
D) Server
E) Printer

Accepted Answer

All the other nodes (Router, Firewall device, Server, Printer) usually require a preferred configuration of at least one permanent (or static) IP. However, smartphones typically use dynamic IP addresses assigned by the network they are connected to.

Question 6

When an IP packet contains __________ as its destination, the packet will never leave the host computer?
A) 127.0.0.1
B) 192.168.1.1
C) 255.255.255.255
D) 224.1.2.3
E) 10.0.0.1

Accepted Answer

The IP address 127.0.0.1 is the loopback address which is used to send a packet back to the same host or computer. Therefore, if a packet has 127.0.0.1 as its destination, it will never leave the host computer.

Question 7

The classful IP scheme differs from the classless IP scheme by _________.
A) using a fixed number of host address bits
B) using a fixed number of subnet address bits
C) using network addresses of 8 bit, 16 bit, and 24 bit blocks
D) using subnet addresses of 8 bit, 16 bit, and 24 bit blocks
E) using host addresses of 8 bit, 16 bit, and 24 bit blocks

Accepted Answer

Classful IP addressing uses fixed network address sizes of 8, 16, or 24 bits, corresponding to Class A, B, and C networks, respectively.

Question 8

In general, which type of network nodes is programmed with temporary or dynamic (rather than permanent) IP addresses?
A) Resource (ex. web pages) providers
B) Resource consumers
C) Intermediary nodes
D) Security devices (ex. surveillance cameras)
E) Managed switches

Accepted Answer

Resource consumers such as laptops, smartphones, and tablets are typically programmed with temporary or dynamic IP addresses, as they may connect to different networks and require a new IP address each time. Meanwhile, resource providers, intermediary nodes, security devices, and managed switches often have permanent or static IP addresses.

Question 9

The Class C network of Classful IP uses ______ bits for the network ID.
A) 4
B) 8
C) 16
D) 24
E) 32

Accepted Answer

Class C network uses 24 bits for the network ID, which can provide up to 256 different networks (2^8) and up to 254 hosts per network (2^8-2).

Question 10

I developed a server web site (with multiple web pages) for a small business client and want to test it offline (by hosting it inside my computer). What URL may be used to access the server pages from the browser?
A) http://127.0.0.1
B) http://192.168.1.1
C) http:// 255.255.255.255
D) http://192.168.1.255
E) http://10.255.255.255

Accepted Answer

The URL http://127.0.0.1 is the loopback address which is commonly used to refer to the computer itself. When the server is hosted on the local machine, accessing it through this URL will allow the browser to connect to the server web pages.

Question 11

The many-to-one IP address mapping by a router is possible by keeping _______ in addition to the sender's and receiver's IP addresses in its mapping table.
A) subnet masks
B) port numbers
C) MAC addresses
D) exit interface (ex. s0/0/0)
E) sender's private address

Accepted Answer

Many-to-one IP address mapping, often used in NAT (Network Address Translation) scenarios, requires keeping track of port numbers in addition to the sender's and receiver's IP addresses. This allows multiple private IP addresses to be mapped to a single public IP address with each session distinguished by a unique port number.

Question 12

The term 'port address translation' is equivalent to ______ in its meaning.
A) Subnetting
B) Supernetting
C) Subnet masking
D) One-to-one IP mapping
E) Many-to-one IP mapping

Accepted Answer

Port address translation (PAT) is a type of network address translation (NAT) that allows many devices to share a single IP address. It maps multiple private IP addresses to a single public IP address by using different port numbers. This is also known as many-to-one IP mapping.

Question 13

Which of the following is INCORRECT in describing network address translation?
A) NAT makes network design, management, and expansion flexible.
B) The router is a type of network device that the NAT function is implemented.
C) Only the sender's (source) IP address, not the receiver's address, should be translated when the packet goes out to the Internet.
D) One-to-one mapping is faster and more accurate than many-to-one mapping in IP conversion.
E) NAT shields internal computers and intermediary devices from casual snooping by outsiders.

Accepted Answer

One-to-one mapping is not always faster or more accurate than many-to-one mapping in IP conversion. Depending on the network setup and traffic patterns, many-to-one mapping may be more suitable and efficient.

Question 14

The term, classless inter-domain routing (CIDR), is synonymous to:
A) Subnetting
B) Supernetting
C) Subnet masking
D) Broadcasting within a subnet
E) Multicasting within a subnet

Accepted Answer

CIDR is a method of aggregating multiple smaller IP address blocks into a larger, single block. This is also known as supernetting, as it creates a "super" network that encompasses multiple smaller networks. Subnetting, subnet masking, broadcasting within a subnet, and multicasting within a subnet are related, but distinct concepts that deal with dividing or managing networks at a smaller scale than CIDR/supernetting.

Question 15

With the CLASSFUL IP address of 200.45.42.33 and a subnet mask of 255.255.255.248, how many bits have been used to create a subnet?
A) 3
B) 4
C) 5
D) 13
E) 14

Accepted Answer

The subnet mask 255.255.255.248 has a binary value of 11111111.11111111.11111111.11111000. This means that the first 29 bits (out of 32) are used for the network portion, leaving only 3 bits for the subnet portion. Therefore, the answer is choice C, as 5 bits would allow for 32 subnets (2^5) which is not possible with the given subnet mask.

Question 16

Assigning a static or dynamic IP to a host requires additional configuration of the following items EXCEPT the
A) IP address
B) Subnet mask
C) Default gateway
D) IP address of a DNS server
E) IP address of an ISP router

Accepted Answer

Assigning a static or dynamic IP to a host requires configuration of the IP address, subnet mask, default gateway, and DNS server. However, the IP address of an ISP router is not required for assigning an IP address to a host.

Question 17

When 192.168.64.0/24, 192.168.128.0/24, and 192.168.192.0/24 are summarized to form a supernet, what can be its address?
A) 192.168.0.0/8
B) 192.168.0.0/16
C) 192.168.0.0/24
D) 192.168.192.0/8
E) 192.168.192.0/16

Accepted Answer

The three subnet addresses can be summarized into one supernet address of 192.168.0.0/16, which covers all the addresses from 192.168.0.0 to 192.168.255.255. This is because the first two octets of these subnets are identical (192.168) and the third octet of each subnet is consecutive (64, 128, 192). By combining them into a /16 network, the common bits are preserved while the different bits are ignored in the summary.

Question 18

Which is the IP address for limited broadcasting?
A) 255.255.224.0
B) 224.1.255.255
C) 10.1.255.255
D) 255.255.255.255
E) 192.168.1.255

Accepted Answer

The IP address for limited broadcasting is 255.255.255.255, which is option D. This address is used to send a message to all devices on a network segment, but not beyond it. It is useful for network discovery and troubleshooting purposes. The other options are not related to limited broadcasting.

Question 19

My computer is behaving somewhat erratic in accessing the network and I want to test if the TCP/IP protocol stack of the computer is working properly. What IP address may be used for the testing?
A) private address
B) loopback address
C) limited broadcasting address
D) multi-casting address
E) directed broadcasting address

Accepted Answer

The loopback address (127.0.0.1) is specifically designated for local testing purposes and can be used to test the TCP/IP protocol stack of the computer without relying on external networks.

Question 20

When a host broadcasts an IP packet using 255.255.255.255 destination address, that address should be translated into ________ MAC address in hex?
A) 1111.1111.1111
B) 0000.0000.0000
C) AAAA.AAAA.AAAA
D) 9999.9999.9999
E) FFFF.FFFF.FFFF

Accepted Answer

When a host broadcasts an IP packet using the 255.255.255.255 destination address, it is a broadcast address at the IP layer. This address is translated into the MAC broadcast address, which is FFFF.FFFF.FFFF in hexadecimal, indicating a broadcast at the data link layer to all network interfaces within the local network segment.

Quiz 4: Ip Address Planning and Management

Which statement describes the IPv6 standard?

255.255.255.255 is an IP address for

What information is used to determine the subnet part of an IP address?

"Localhost" is the domain name for which IP address?

The following nodes EXCEPT ______ require "preferred" configuration of at least one permanent (or static) IP:

When an IP packet contains __________ as its destination, the packet will never leave the host computer?

The classful IP scheme differs from the classless IP scheme by _________.

In general, which type of network nodes is programmed with temporary or dynamic (rather than permanent) IP addresses?

The Class C network of Classful IP uses ______ bits for the network ID.

I developed a server web site (with multiple web pages) for a small business client and want to test it offline (by hosting it inside my computer) . What URL may be used to access the server pages from the browser?

The many-to-one IP address mapping by a router is possible by keeping _______ in addition to the sender's and receiver's IP addresses in its mapping table.

The term 'port address translation' is equivalent to ______ in its meaning.

Which of the following is INCORRECT in describing network address translation?

The term, classless inter-domain routing (CIDR) , is synonymous to:

With the CLASSFUL IP address of 200.45.42.33 and a subnet mask of 255.255.255.248, how many bits have been used to create a subnet?

Assigning a static or dynamic IP to a host requires additional configuration of the following items EXCEPT the

When 192.168.64.0/24, 192.168.128.0/24, and 192.168.192.0/24 are summarized to form a supernet, what can be its address?

Which is the IP address for limited broadcasting?

My computer is behaving somewhat erratic in accessing the network and I want to test if the TCP/IP protocol stack of the computer is working properly. What IP address may be used for the testing?

When a host broadcasts an IP packet using 255.255.255.255 destination address, that address should be translated into ________ MAC address in hex?