In this post you can find Complete and recently updated Correct Question and answers of TCP/IP. All Answers updated regularly with new questions. Upwork
Question:* Which of the following is NOT a valid class of IP addresses?
Answer: • Class F
Question:* If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
Answer: • Application
Question:* Which of the following IP addresses use 14 bits for the <network> and 16 bits for the <host> portion of the IP address?
Answer: • Class B addresses
Question:* Which of the following networks major networks contain an incorrect subnet mask?
Answer: • Class D with a mask 255.255.255.255 or /32
Question:* Which of the following addresses have : First 24 bits : Network address Last 8 bits : Local host address
Answer: • Class C addresses
Question:* Which of the following is a VALID dynamic routing protocol category?
Answer: • All of the given options are valid
Question:* Which of the following type of IP addresses are suitable for networks with an extremely large number of hosts?
Answer: • Class A addresses
Question:* Which of the following protocol adds no reliability, flow-control, or error recovery to IP and simply serves as a multiplexer/demultiplexer for sending and receiving datagrams, using ports to direct the datagrams?
Answer: • User Datagram Protocol (UDP)
Question:* You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?
Answer: • DHCP
Question:* Which of the following IP addresses are reserved for multicasting (broadcasting)?
Answer: • Class D addresses
Question:* TCP is a "Blank" protocol.
Answer: • Connection Oriented
Question:* Which of the following are reserved for future/experimental/test use?
Answer: • Class E addresses
Question:* What is the telecommunication protocol that all computers must use to be part of the Internet.
Answer: • IP
Question:* What technology exists that allows a non-routable IP address to communicate with the global IP Internet Network.
Answer: • NAT (Network Address Translation)
Question:* Which class of IP address provides a maximum of only 254 host addresses per network ID?
Answer: • Class C
Question:* Which of the following IP addresses use 24 bits for the <network> and 8 bits for the <host> portion of the IP address?
Answer: • Class C addresses
Question:* When using the PING utility, what are you trying to accomplish?
Answer: • Does connectivity exist between two IP end points
Question:* Which IP address is reserved for loopback testing?
Answer: • 127.0.0.1
Question:* A user loads a web browser and browses to http://www.google.com, what is the highest layer of the OSI model the user is functioning at?
Answer: • Application Layer
Question:* Given the IP address 82.77.201.1/24, what is the network number?
Answer: • 82.77.201.0
Question:* Which of the following is an interface between an application/program/software and network?
Answer: • socket
Question:* A server that has HTTP services and SMTP services bound to an interface functions with what protocol?
Answer: • TCP
Question:* Which of the following is a VALID use of IP address 224.0.0.0/4?
Answer: • Multicast
Question:* Which of the following is private IP address?
Answer: • 192.168.24.43
Question:* The network number portion of the IP address is administered by which of the following?
Answer: • All of the given options are valid
Question:* Which of the following fields in the header of an IP packet will be decremented by one at each router?
Answer: • The Time to Live (TTL)
Question:* If you wanted to test to see if a TCP port was opened on a server, what command/tool would you use?
Answer: • Telnet
Question:* IP addresses are represented by a which of the following sized unsigned binary value?
Answer: • 32-bit
Question:* Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPOFFER?
Answer: • Response from a server to a DHCPDISCOVER and offering IP address and other parameters
Question:* Which of the following IP addresses use 8 bits for the <network> and 24 bits for the <host> portion of the IP address?
Answer: • Class A addresses
Question:* Which of the following IP addresses is a class A Network?
Answer: • 0.0.0.1
Question:* TCP contains fields in the header of TCP Segment to identify upper layer applications, what are these fields?
Answer: • Source and Destination Port Numbers
Question:* A router that responds to an ARP request intended for a remote host is called what?
Answer: • Proxy ARP
Question:* What is the primary Layer 3 protocol in the TCP/IP suite?
Answer: • IP
Question:* Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPRELEASE?
Answer: • Message from client to server cancelling remainder of a lease and relinquishing network address
Question:* Which of the following is an VALID RIP packet type?
Answer: • Request packet and Response packet
Question:* Which of the following allows a router to respond to an ARP request that is intended for a remote host?
Answer: • Proxy ARP
Question:* There are 5 class of IPv4 addresses, what are the class D addresses used for?
Answer: • Multicast
Question:* Which of the following commands can be used on some IP hosts to list the details of fragmentation?
Answer: • netstat
Question:* Which of the following TCP/IP protocol layer is also called as internet layer or the network layer?
Answer: • Internetwork layer
Question:* Which of the following TCP/IP protocol layer is also called as a link layer or the data-link layer?
Answer: • Network interface
Question:* What is the purpose of the ARP (Address Resolution Protocol)?
Answer: • Resolves an IP address to a MAC address
Question:* Your ISP has given you a block of addresses: 199.200.199.0/25; how many IP addresses are available for devices on a network.
Answer: • 126
Question:* You are a Network Administrator for the ACME company; one of your webservers had a hardware issue, so you moved the IP address (192.168.1.99) to another webserver. Users from other networks are reporting that they still are not able to access the website. You are able to access the website locally; What is the best answer that will fix the issue.
Answer: • Clear the ARP Cache on the router
Question:* Internet Protocol (IP) is the most important protocol in which of the following layer
Answer: • Internetwork layer
Question:* Which of the following is the maximum length of an IP datagram?
Answer: • 65,535 octets
Question:* If a maximum MTU was set to 1300 in the Windows Vista operating system, what would be the smallest packet you can send if you utilize the PING command with the Don't Fragment bit option set?
Answer: • 1272
Question:* Which of the following TCP/IP layer provides the end-to-end data transfer by delivering data from an application to its remote peer?
Answer: • Transport
Question:* TCP contains several features that benefit the protocol, which of the following answers is not a feature?
Answer: • Low overhead
Question:* Dynamic Host Configuration Protocol (DHCP) supports which of the following mechanisms for IP address allocation?
Answer: • All of the given options are correct
Question:* When a host is generating an ARP packet, what is unknown?
Answer: • The Target’s Ethernet Hardware Address
Question:* Which of the following is a VALID use of IP address 14.0.0.0/8?
Answer: • Public-data networks
Question:* Layer 4 of the OSI model contains the TCP and UDP protocols, what is FALSE about UDP?
Answer: • Does not contain any port numbers
Question:* Which of the following protocol messages belong to STD 5?
Answer: • Internet Control Message Protocol (ICMP)
Question:* At layer 4, what port is reserved for TFTP and what protocol is used?
Answer: • 69, UDP
Question:* What debugging tool would you use to troubleshoot TCP connections from client to a server that was experiencing slow transfers and intermittent connectivity?
Answer: • Wireshark/TCPDump
Question:* Which of the following is NOT a valid Dynamic Host Configuration Protocol (DHCP) message type?
Answer: • DHCPNRELEASE
Question:* Which of the following correctly define maximum transmission unit (MTU)?
Answer: • Maximum frame size of a physical network
Question:* The TCP 3-Way handshake contains three messages that are exchange between two hosts before any application data is transmitted, what does a SYN-ACK message indicate?
Answer: • Second message of a 3-Way handshake
Question:* Which of the following is TRUE about Interior Gateway Protocols (IGPs)?
Answer: • Allow routers to exchange information within an autonomous system
Question:* Which of the following is a rfc1918 address?
Answer: • 10.70.40.103
Question:* An IPv4 header contains a Time To Live (TTL) field, what is the purpose of TTL?
Answer: • To prevent routing loops
Question:* Based on the provided answers, what is the best INCORRECT answer for ICMP?
Answer: • If an ICMP packet is dropped, a new ICMP packet will be generated
Question:* Which of the following is NOT a protocol associated with the TCP/IP transport layer?
Answer: • Internet Protocol (IP)
Question:* You were given a network address of 67.230.100.64/27 from your ISP, what would the broadcast address be?
Answer: • 67.230.100.95
Question:* Which of the following is a VALID use of IP address 0.0.0.0/8?
Answer: • "This" network
Question:* An IP header contains a "Blank" field that identifies the type of data that is encapsulated in an IP Packet.
Answer: • The Protocol Number
Question:* How does a host determine that an IP address is not located on the local network?
Answer: • "The ANDing process"
Question:* Which of the following is a connectionless network socket ?
Answer: • Datagram socket
Question:* Which of the following is not true regarding the traceroute application?
Answer: • It uses TCP packets encapsulated in an IP packet
Question:* VERSION, IHL, TOS etc are valid properties of which of the following?
Answer: • IP datagram
Question:* Which of the following is the decimal and hexadecimal equivalents of the binary number 01101101?
Answer: • 109, 6D
Question:* Who invented TCP/IP?
Answer: • Cerf and Kahn
Question:* Which of the following is not a valid TCP/IP protocol layer ?
Answer: • Session
Question:* Assuming no PPP compression, standard network MTU of 1500, an IP packet that contains a TCP segment with TCP timestamps and is encapsulated in a Ethernet frame with no 802.1q tags, what would the data rate efficiency be?
Answer: • 94.1482%
Question:* What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?
Answer: • Host-to-Host
Question:* Which of the following protocol messages belong to STD 6?
Answer: • User Datagram Protocol (UDP)
Question:* What is binary 00011000.01001100.01111001.00001010 equivalent to in Decimal?
Answer: • 24.76.121.10
Question:* Which of the following protocols was designed to overcome the weaknesses of RARP (Reverse Address Resolution Protocol)?
Answer: • Bootstrap Protocol (BOOTP)
Question:* You have a network address of 192.168.56.0 with four subnets. You want to allow for maximum number of Hosts. What is the subnet mask you need to apply?
Answer: • 255.255.255.192
Question:* Which of the following socket bypass the normal TCP/IP processing?
Answer: • Raw socket
Question:* What is the maximum size of RIP datagrams?
Answer: • 512 octet
Question:* Which of the following is incorrect about an IPv4 address?
Answer: • An IP address is 32 bytes long
Question:* Which of the following is NOT a protocol associated with the TCP/IP internetwork layer?
Answer: • User Datagram Protocol (UDP)
Question:* Which of the following is a VALID use of IP address 24.0.0.0/8?
Answer: • Cable television networks
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