2025 TCP INTERNETWORKING ACTUAL EXAM QUESTIONS WITH
ANSWERS GUARANTEE A+ 2025/2026
Transmission control protocol (TCP) includes which three types of
mechanisms to ensure reliable data transmission? - Checksum - Acknowledgements -
Sequence number
Telnet is a protocol in which TCP/IP layer? - Application
Which three of the following are included in the TCP/IP Internetwork Layer? (Choose
three.) - Internet Group Management Protocol (IGMP).
Internet protocol (IP).
Address resolution protocol (ARP).
Which TCP/IP Application Layer protocol allows companies to publicly post information
over the Internet? - Network News Transfer Protocol (NNTP)
Which three of the following are functions of the TCP/IP Internetwork Layer? (Choose
three.) - A global addressing structure
Packet fragmentation
Service type request
Which TCP/IP Internetwork Layer provides troubleshooting utilities, such as ping and
traceroute? - Internet Control Message Protocol (ICMP).
A Class C address provides for a maximum of how many usable hosts? - 254
A Class C network address provides for how many network and host bits? - 24 network,
8 hosts
Which is the valid Class B IP address range? - 128.001.hhh.hhh-191.254.hhh.hhh
Which two statements are true concerning IP addressing? - The host portion should not
be all 1s.
The network portion bits should not be all 0s.
Which two of the following are considered reserved IP addresses? (Choose two.) -
0.x.y.z
127.x.y.z
Which is the valid Class C IP address range? - 192.000.001.hhh-223.255.254.hhh
In which three ways do organizations benefit from using private IP addresses? (Choose
three.) - -They gain more network design flexibility with a large address range.
-They prevent Internet address clashes when obtaining only a small range of Internet
Corporation for Assigned Names and Numbers (ICANN) assigned addresses.-They
conserve public IP addresses when uniqueness is not required.
,Which is a valid Class B network address? - 151.129.89.76
Which are considered private Internet protocol (IP) addresses? (Choose three.) -
10.0.0.0
172.31.255.255
192.168.0.0
The Internet Assigned Numbers Authority (IANA) recommends organizations use
private IP addresses under which condition? - The network uses gateways, routers, or
firewalls to act on the network host's behalf.
What does the class network number 127.x.y.z designate? - A loopback address
A Class D address is also known as which type of address? - Multicast
Which device provides the connection point between a workstation or personal
computer (PC) and the network? - Network interface card (NIC).
Which network device can isolate broadcast traffic to the local network segment? -
Router.
At what maximum distance would you have to add a repeater to a
10Base2 network segment to prevent signal degradation - 185m
Bridges and OSI/RM Layer 2 switches filter traffic in which way? - By building physical
address to port mappings and making forwarding decisions based on these mappings.
A hub that repeats and regenerates signals is called which type of hub? - Active
Which network device allows us to connect dissimilar network
topologies? - Bridge.
Which network device allows communication between separate IP
networks? - Router.
Which three of the following networking devices break up collisions? (Choose three.) -
Bridge
Switch
Router
Which network device requires a device driver in order to connect hosts to the network
segment? - Network interface card (NIC).
Hubs connect network hosts in which configuration? - Star
, What must the Network Layer do to a received frame first in order to
determine the route over which it will forward the datagram to the
next network? - Decapsulate the packet.
Which two of the following devices work only with the binary representations of network
data? (Choose two.) - Hub
Repeader
Which three devices forward broadcast traffic? (Choose three.) - Switch.
Bridge.
Repeater.
Which OSI/RM Data Link Layer 2 device creates multiple network
segments, each offering the full network bandwidth? - Switch
Which three of the following are Dynamic Host Configuration
Protocol (DHCP) address allocation mechanisms? (Choose three.) - Automatic
Dynamic
Manual
Which protocol allows clients to locate and download IP addressing and configuration
information on an automatically renewable (lease) basis? - Dynamic Host Configuration
Protocol (DHCP).
Which statement best describes Internet Message Access Protocol (IMAP)? - IMAP
allows users to scan email headers and choose email messages to download from the
email server.
If a Dynamic Host Configuration Protocol (DHCP) client fails to renew its lease at the
50-percent point, what happens next? - It attempts to obtain a lease at 87.5-percent
lease time.
Internet email uses which two protocols? (Choose two.) - Simple Mail Transfer Protocol
(SMTP).
Post Office Protocol version 3 (POP3).
Which TCP/IP application allows us to transfer files either within a browser or at the
command line? - File transfer protocol (FTP).
How does the Domain Name System (DNS) resolve fully qualified domain names
(FQDN) to IP addresses? - By looking up the names in an address mapping database.
To resolve fully qualified domain names (FQDN) to binary IP
addresses, resolvers contact which type of TCP/IP application
server? - Domain Name System (DNS).
ANSWERS GUARANTEE A+ 2025/2026
Transmission control protocol (TCP) includes which three types of
mechanisms to ensure reliable data transmission? - Checksum - Acknowledgements -
Sequence number
Telnet is a protocol in which TCP/IP layer? - Application
Which three of the following are included in the TCP/IP Internetwork Layer? (Choose
three.) - Internet Group Management Protocol (IGMP).
Internet protocol (IP).
Address resolution protocol (ARP).
Which TCP/IP Application Layer protocol allows companies to publicly post information
over the Internet? - Network News Transfer Protocol (NNTP)
Which three of the following are functions of the TCP/IP Internetwork Layer? (Choose
three.) - A global addressing structure
Packet fragmentation
Service type request
Which TCP/IP Internetwork Layer provides troubleshooting utilities, such as ping and
traceroute? - Internet Control Message Protocol (ICMP).
A Class C address provides for a maximum of how many usable hosts? - 254
A Class C network address provides for how many network and host bits? - 24 network,
8 hosts
Which is the valid Class B IP address range? - 128.001.hhh.hhh-191.254.hhh.hhh
Which two statements are true concerning IP addressing? - The host portion should not
be all 1s.
The network portion bits should not be all 0s.
Which two of the following are considered reserved IP addresses? (Choose two.) -
0.x.y.z
127.x.y.z
Which is the valid Class C IP address range? - 192.000.001.hhh-223.255.254.hhh
In which three ways do organizations benefit from using private IP addresses? (Choose
three.) - -They gain more network design flexibility with a large address range.
-They prevent Internet address clashes when obtaining only a small range of Internet
Corporation for Assigned Names and Numbers (ICANN) assigned addresses.-They
conserve public IP addresses when uniqueness is not required.
,Which is a valid Class B network address? - 151.129.89.76
Which are considered private Internet protocol (IP) addresses? (Choose three.) -
10.0.0.0
172.31.255.255
192.168.0.0
The Internet Assigned Numbers Authority (IANA) recommends organizations use
private IP addresses under which condition? - The network uses gateways, routers, or
firewalls to act on the network host's behalf.
What does the class network number 127.x.y.z designate? - A loopback address
A Class D address is also known as which type of address? - Multicast
Which device provides the connection point between a workstation or personal
computer (PC) and the network? - Network interface card (NIC).
Which network device can isolate broadcast traffic to the local network segment? -
Router.
At what maximum distance would you have to add a repeater to a
10Base2 network segment to prevent signal degradation - 185m
Bridges and OSI/RM Layer 2 switches filter traffic in which way? - By building physical
address to port mappings and making forwarding decisions based on these mappings.
A hub that repeats and regenerates signals is called which type of hub? - Active
Which network device allows us to connect dissimilar network
topologies? - Bridge.
Which network device allows communication between separate IP
networks? - Router.
Which three of the following networking devices break up collisions? (Choose three.) -
Bridge
Switch
Router
Which network device requires a device driver in order to connect hosts to the network
segment? - Network interface card (NIC).
Hubs connect network hosts in which configuration? - Star
, What must the Network Layer do to a received frame first in order to
determine the route over which it will forward the datagram to the
next network? - Decapsulate the packet.
Which two of the following devices work only with the binary representations of network
data? (Choose two.) - Hub
Repeader
Which three devices forward broadcast traffic? (Choose three.) - Switch.
Bridge.
Repeater.
Which OSI/RM Data Link Layer 2 device creates multiple network
segments, each offering the full network bandwidth? - Switch
Which three of the following are Dynamic Host Configuration
Protocol (DHCP) address allocation mechanisms? (Choose three.) - Automatic
Dynamic
Manual
Which protocol allows clients to locate and download IP addressing and configuration
information on an automatically renewable (lease) basis? - Dynamic Host Configuration
Protocol (DHCP).
Which statement best describes Internet Message Access Protocol (IMAP)? - IMAP
allows users to scan email headers and choose email messages to download from the
email server.
If a Dynamic Host Configuration Protocol (DHCP) client fails to renew its lease at the
50-percent point, what happens next? - It attempts to obtain a lease at 87.5-percent
lease time.
Internet email uses which two protocols? (Choose two.) - Simple Mail Transfer Protocol
(SMTP).
Post Office Protocol version 3 (POP3).
Which TCP/IP application allows us to transfer files either within a browser or at the
command line? - File transfer protocol (FTP).
How does the Domain Name System (DNS) resolve fully qualified domain names
(FQDN) to IP addresses? - By looking up the names in an address mapping database.
To resolve fully qualified domain names (FQDN) to binary IP
addresses, resolvers contact which type of TCP/IP application
server? - Domain Name System (DNS).
