Question 1

What is the most commonly used LAN protocol?
A) UDP/IP
B) IPX/SPX
C) TCP/IP
D) DLC

Accepted Answer

TCP/IP is the most commonly used LAN protocol because it is the foundational protocol suite for the internet and most local area networks, enabling computers to communicate over long and short distances.

Question 2

An IPv6 IP address consists of 16-bit numbers in what numbering scheme?
A) hexadecimal
B) decimal
C) binary
D) octal

Accepted Answer

IPv6 addresses are represented as eight groups of four hexadecimal digits, making use of the hexadecimal numbering scheme for compactness and readability.

Question 3

The ARCfour encryption algorithm uses variable-length keys up to 2048 bits in length.​

Accepted Answer

The ARCfour encryption algorithm uses variable-length keys up to 256 bits in length, not 2048 bits.

Question 4

What command can be used to troubleshoot routing by displaying all routers between the current computer and a remote computer?
A) route
B) ip
C) traceroute
D) route add

Accepted Answer

The "traceroute" command is used to display the path and measure transit delays of packets across an IP network, effectively showing all the routers a packet passes through to reach its destination.

Question 5

Passwords used by the PPP daemon are stored in two files: /etc/ppp/pap-secrets and /etc/ppp/chap-secrets.

Accepted Answer

The PPP daemon uses /etc/ppp/pap-secrets for PAP (Password Authentication Protocol) and /etc/ppp/chap-secrets for CHAP (Challenge Handshake Authentication Protocol) to store passwords and authentication information.

Question 6

A route table is a list of TCP/IP networks that is stored in system memory.

Accepted Answer

A route table, indeed, is a list of the IP addresses of networks, including TCP/IP networks, that a computer or router uses to determine where to forward packets. It is stored in the system's memory and is essential for the proper routing of data across networks and the internet.

Question 7

Class D addresses are used for multicasting.

Accepted Answer

Class D IP addresses, ranging from 224.0.0.0 to 239.255.255.255, are reserved specifically for multicast groups.

Question 8

IPv6 IP addresses are delimited by what character below?
A) ;
B) :
C) .
D) ,

Accepted Answer

IPv6 addresses are delimited by colons (:), not periods, semicolons, or commas, which differentiates them from IPv4 addresses that use periods.

Question 9

What tool below was designed as a secure remote access utility that encrypts information that passes across the network?
A) Telnet
B) Virtual Network Computing (VNC)
C) rlogin
D) Secure Shell (SSH)

Accepted Answer

Secure Shell (SSH) was specifically designed to provide secure encrypted communications over an unsecured network to replace older utilities like Telnet and rlogin, which do not encrypt the session, including the transmission of passwords.

Question 10

What is the subnet mask for a Class C IP address?
A) 255.0.0.0
B) 255.255.0.0
C) 255.255.255.0
D) 255.255.255.255

Accepted Answer

Class C IP addresses have a default subnet mask of 255.255.255.0, which supports 256 IP addresses, with 254 usable for hosts.

Question 11

In order to enable IP routing on Linux at boot, what setting must be configured in /etc/sysctl.conf?​
A) net.routing.enable​
B) ​net.ipv4.ip_forward
C) ​ipv4.routing
D) ​iproute.ipv4

Accepted Answer

The correct setting to enable IP routing on Linux at boot time is "net.ipv4.ip_forward" in the /etc/sysctl.conf file. This setting allows the Linux kernel to forward packets between interfaces.

Question 12

SLIP is a newer technology than PPP.

Accepted Answer

SLIP (Serial Line Internet Protocol) predates PPP (Point-to-Point Protocol), making PPP the newer technology designed to overcome limitations of SLIP.

Question 13

What option can be added to the netstat command in order to display network statistics?​
A) ​-s
B) ​-a
C) ​-i
D) ​-p

Accepted Answer

The answer of What option can be added to the...

Question 14

What range of ports is considered to be "well-known"?​
A) ​0-1023
B) ​1024-10023
C) ​10023-24433
D) ​24434-65535

Accepted Answer

The range of ports considered to be "well-known" is 0-1023. These ports are reserved for system or well-known services and require administrative privileges to use or access on most systems.

Question 15

What well-known TCP port is utilized by the SMTP service?​
A) ​23
B) ​25
C) ​22
D) ​110

Accepted Answer

SMTP (Simple Mail Transfer Protocol) uses TCP port 25 for its communication, which is the standard port for sending email messages between servers.

Question 16

Select the command that can be used to send a small TCP/IP packet to another IP address and await a response:
A) ping
B) ring
C) png
D) ipquery

Accepted Answer

The "ping" command is used to send a small packet to another IP address to check connectivity and measure response time.

Question 17

What command can be used to assign a TCP/IP configuration to a NIC as well as view the current configuration of all network interfaces?
A) ipconfig
B) ifconf
C) ipconf
D) ifconfig

Accepted Answer

The command "ifconfig" is used to configure, or view the configuration of, network interfaces in Unix and Unix-like operating systems.

Question 18

What is the subnet mask for a Class B IP address?
A) 255.0.0.0
B) 255.255.0.0
C) 255.255.255.0
D) 255.255.255.255

Accepted Answer

Class B IP addresses have a default subnet mask of 255.255.0.0, which allows for a significant number of hosts within each network.

Question 19

How many DNS servers can be configured in the /etc/resolv.conf file?
A) two
B) three
C) four
D) five

Accepted Answer

The /etc/resolv.conf file can have up to three DNS server entries, allowing a system to query up to three different servers for DNS resolution.

Question 20

Each octet in an IP address represents a binary number consisting of how many bits / bytes?
A) 4-bit
B) 8-bit
C) 4-byte
D) 8-byte

Accepted Answer

Each octet in an IP address represents a binary number consisting of 8 bits.

Quiz 12: Network Configuration

What is the most commonly used LAN protocol?

An IPv6 IP address consists of 16-bit numbers in what numbering scheme?

The ARCfour encryption algorithm uses variable-length keys up to 2048 bits in length.​

What command can be used to troubleshoot routing by displaying all routers between the current computer and a remote computer?

Passwords used by the PPP daemon are stored in two files: /etc/ppp/pap-secrets and /etc/ppp/chap-secrets.

A route table is a list of TCP/IP networks that is stored in system memory.

Class D addresses are used for multicasting.

IPv6 IP addresses are delimited by what character below?

What tool below was designed as a secure remote access utility that encrypts information that passes across the network?

What is the subnet mask for a Class C IP address?

In order to enable IP routing on Linux at boot, what setting must be configured in /etc/sysctl.conf?​

SLIP is a newer technology than PPP.

What option can be added to the netstat command in order to display network statistics?​

What range of ports is considered to be "well-known"?​

What well-known TCP port is utilized by the SMTP service?​

Select the command that can be used to send a small TCP/IP packet to another IP address and await a response:

What command can be used to assign a TCP/IP configuration to a NIC as well as view the current configuration of all network interfaces?

What is the subnet mask for a Class B IP address?

How many DNS servers can be configured in the /etc/resolv.conf file?

Each octet in an IP address represents a binary number consisting of how many bits / bytes?

The ARCfour encryption algorithm uses variable-length keys up to 2048 bits in length.

In order to enable IP routing on Linux at boot, what setting must be configured in /etc/sysctl.conf?

What option can be added to the netstat command in order to display network statistics?

What range of ports is considered to be "well-known"?

What well-known TCP port is utilized by the SMTP service?