Elance TCP/IP Test Answers 2015



Which of the following is NOT a valid class of IP addresses?
Class B
Class C
Class F
Class A


Which of the following is an VALID RIP packet type?
Request packet
Response packet
Data packet
Request packet and Response packet


Which of the following is a VALID use of IP address 14.0.0.0/8?
Multicast
"This" network
Public-data networks
Cable television networks


Which of the following is the maximum length of an IP datagram?
65,535 octets
65,536 octets
75,535 octets
66,535 octets


Layer 4 of the OSI model contains the TCP and UDP protocols, what is FALSE about UDP?
Stands for User Datagram Protocol
Does not contain any port numbers
Low overhead
Unreliable


What is the purpose of the ARP (Address Resolution Protocol)?
Resolves a MAC address to an IP address
Resolves a DNS name to a MAC address
Resolves an IP address to a MAC address
Resolves a MAC address to a DNS name


What is the primary Layer 3 protocol in the TCP/IP suite?
ARP
UDP
TCP
IP


TCP contains fields in the header of TCP Segment to identify upper layer applications, what are these fields?
Source and Destination Port Numbers
The TTL field
The TYPE field
Options


Which of the following IP addresses use 8 bits for the <network> and 24 bits for the <host> portion of the IP address?
Class A addresses
Class D addresses
Class C addresses
Class B addresses


Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPRELEASE?
Response from a server to a DHCPDISCOVER and offering IP address and other parameters
Message from client to server cancelling remainder of a lease and relinquishing network address
Broadcast by a client to find available DHCP servers
Acknowledgement from server to client with parameters, including IP address


IP addresses are represented by a which of the following sized unsigned binary value?
32-bit
64-bit
128-bit
256-bit


Which of the following commands can be used on some IP hosts to list the details of fragmentation?
netstat
ipconfig
config
net


A server that has HTTP services and SMTP services bound to an interface functions with what protocol?
DHCP
UDP
TCP
IP


Which of the following correctly describes Dynamic Host Configuration Protocol (DHCP) message type DHCPOFFER?
Acknowledgement from server to client with parameters, including IP address
Response from a server to a DHCPDISCOVER and offering IP address and other parameters
Broadcast by a client to find available DHCP servers
Negative acknowledgement from server to client


If you wanted to test to see if a TCP port was opened on a server, what command/tool would you use?
Firefox
Telnet
Ping
FTP


Which of the following IP addresses is a class A Network?
128.30.33.1
0.0.0.1
191.77.56.1
192.35.111.1


Which of the following IP addresses use 14 bits for the <network> and 16 bits for the <host> portion of the IP address?
Class C addresses
Class D addresses
Class B addresses
Class A addresses


Which of the following IP addresses use 24 bits for the <network> and 8 bits for the <host> portion of the IP address?
Class C addresses
Class B addresses
Class A addresses
Class D addresses


Which of the following fields in the header of an IP packet will be decremented by one at each router?
The Protocol Number
The Time to Live (TTL)
The Header Checksum
The Type of Service


Which of the following is a VALID use of IP address 224.0.0.0/4?
Multicast
Cable television networks
"This" network
Public-data networks


Given the IP address 82.77.201.1/24, what is the network number?
82.0.0.0
82.77.201.0
82.77.201.255
82.77.0.0


Which class of IP address provides a maximum of only 254 host addresses per network ID?
Class B
Class C
Class A
Class D


When using the PING utility, what are you trying to accomplish?
Determining if a TCP connection can be established
Tracing the route that a IP packet is taking
Does connectivity exist between two IP end points
Are ICMP ports opened on the remote end?


Which of the following is private IP address?
172.15.14.36
192.168.24.43
168.172.19.39
12.0.0.1


What is the telecommunication protocol that all computers must use to be part of the Internet.
ARP
TCP
IP
UDP


Which of the following type of IP addresses are suitable for networks with an extremely large number of hosts?
Class A addresses
Class C addresses
Class D addresses
Class B addresses


Which of the following are reserved for future/experimental/test use?
Class C addresses
Class D addresses
Class E addresses
Class A addresses


TCP is a "Blank" protocol.
Best Effort
Connection Oriented
Unreliable
Connectionless


Which of the following addresses have : First 24 bits : Network address Last 8 bits : Local host address
Class B addresses
Class D addresses
Class C addresses
Class A addresses


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?
User Datagram Protocol (UDP)
Address Resolution Protocol (ARP)
Internet Protocol (IP)
Internet Control Message Protocol (ICMP)


Which protocol ensures reliable delivery
UDP
NETBEUI
IP
TCP


Which of the following IP addresses are reserved for multicasting (broadcasting)?
Class D addresses
Class B addresses
Class C addresses
Class A addresses


Which of the following networks major networks contain an incorrect subnet mask?
Class D with a mask 255.255.255.255 or /32
Class C with a mask 255.255.255.0 or /24
Class B with a mask 255.255.0.0 or /16
Class A with a mask 255.0.0.0 or /8


The network number portion of the IP address is administered by which of the following?
Asia Pacific Network Information Centre (APNIC)
American Registry for Internet Numbers (ARIN)
Reseaux IP Europeans (RIPE)
All of the given options are valid


Which of the following is an interface between an application/program/software and network?
subnet
socket
datagram
handle


Which of the following is a VALID dynamic routing protocol category?
Path vector protocols
All of the given options are valid
Link state protocols
Distance vector protocols


What technology exists that allows a non-routable IP address to communicate with the global IP Internet Network.
NAT (Network Address Translation)
Route Summarization
CIDR Network address
eBGP


Which IP address is reserved for loopback testing?
0.0.0.0
127.256.0.1
192.168.1.1
127.0.0.1


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?
Session Layer
Application Layer
Transport Layer
Network Layer


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?
ARP
DHCP
TFTP
SMTP
SNMP


Which protocol deals with resolving domain names
NETBIOS
DNS
SMTP
SPX


Which protocol deals with emails
FTP
X Windows
SMTP
LPD


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.
Update NAT
Start the Web Service application
Add a firewall Rule
Clear the ARP Cache on the router


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.
256
254
126
25


A router that responds to an ARP request intended for a remote host is called what?
Proxy IP
Inverse ARP
Gratutious ARP
Proxy ARP


Which of the following TCP/IP protocol layer is also called as a link layer or the data-link layer?
Session
Network interface
Application
Transport


Which of the following allows a router to respond to an ARP request that is intended for a remote host?
Proxy ARP
Gateway DP
Reverse ARP (RARP)
Inverse ARP (IARP)


If you use either Telnet or FTP, which is the highest layer you are using to transmit data?
Transport
Session
Application
Presentation


Which of the following TCP/IP protocol layer is also called as internet layer or the network layer?
Network interface
Application
Session
Internetwork layer


Internet Protocol (IP) is the most important protocol in which of the following layer
Session
Application
Internetwork layer
Network interface


TCP contains several features that benefit the protocol, which of the following answers is not a feature?
Full Duplex
Point to Point
Low overhead
Reliable


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?
1272
1372
1300
1500


Which protocol uses window flow system
NONE OF THE ABOVE.
UDP
FTP
TCP


Dynamic Host Configuration Protocol (DHCP) supports which of the following mechanisms for IP address allocation?
Dynamic allocation
Automatic allocation
Manual allocation
All of the given options are correct


There are 5 class of IPv4 addresses, what are the class D addresses used for?
Unicast
Multicast
Broadcast
Experiental


Which of the following TCP/IP layer provides the end-to-end data transfer by delivering data from an application to its remote peer?
Session
Application
Transport
Network interface


When a host is generating an ARP packet, what is unknown?
The Sender’s IP address
The Target’s Ethernet Hardware Address
The Target's Hardware port number
The sender’s Ethernet Hardware Address


Which of the following protocol messages belong to STD 5?
Address Resolution Protocol (ARP)
Internet Protocol (IP)
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)


TCP/IP reference model contains how many layers
4
3
7
2


Which of the following is NOT a valid Dynamic Host Configuration Protocol (DHCP) message type?
DHCPDISCOVER
DHCPNRELEASE
DHCPREQUEST
DHCPOFFER


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?
First message of a 3-Way handshake
Second message of a 3-Way handshake
Third and final message of a 3 way handshake
None of the above


Which of the following is TRUE about Interior Gateway Protocols (IGPs)?
Allow the exchange of summary information between autonomous systems
Allow the exchange of information only within known systems
None of the given options are valid
Allow routers to exchange information within an autonomous system


Which of the following is NOT a protocol associated with the TCP/IP transport layer?
Both User Datagram Protocol (UDP) and Transmission Control Protocol (TCP)
Internet Protocol (IP)
Transmission Control Protocol (TCP)
User Datagram Protocol (UDP)


What debugging tool would you use to troubleshoot TCP connections from client to a server that was experiencing slow transfers and intermittent connectivity?
Ping
Wireshark/TCPDump
Telnet
Traceroute


At layer 4, what port is reserved for TFTP and what protocol is used?
69, TCP
96, UDP
69, UDP
161, UDP


An IPv4 header contains a Time To Live (TTL) field, what is the purpose of TTL?
To prevent routing loops
How long a learned route remains in the routing table before being dropped
Used to track of the number of routers that can forward traffic
To count how many routers are in the path between the source and destination


You were given a network address of 67.230.100.64/27 from your ISP, what would the broadcast address be?
4.18.15.16.23.42
67.230.100.96
67.230.100.95
255.255.255.255


Which of the following is a rfc1918 address?
82.41.108.21
172.33.41.100
191.34.100.1
10.70.40.103


Which of the following correctly define maximum transmission unit (MTU)?
Minimum required frame size of a physical network as per standards
Minimum supported length of an IP datagram
Maximum length of an IP datagram
Maximum frame size of a physical network


Based on the provided answers, what is the best INCORRECT answer for ICMP?
The primary function of ICMP is for error notification between routers and hosts
ICMP is encapsulated in IP packets
If an ICMP packet is dropped, a new ICMP packet will be generated
ICMP stands for the Internet Control Message Protocol


An IP header contains a "Blank" field that identifies the type of data that is encapsulated in an IP Packet.
The Protocol Number
The Time to Live
The Type of Service
The Header Checksum


Who invented TCP/IP?
Cerf and Postal
Cerf and Kahn
Kahn and Duvall
Crocker and Duvall


Which of the following is a VALID use of IP address 0.0.0.0/8?
Cable television networks
Public-data networks
"This" network
Multicast


Which of the following is not true regarding the traceroute application?
It uses the TTL field to determine routers in the path between the source and destination hosts
It traces out ap IP path taken by IP packets to a given destination
It uses TCP packets encapsulated in an IP packet
None of these


Which of the following is a connectionless network socket ?
Raw socket
All of the given options are valid
Datagram socket
Stream socket


How does a host determine that an IP address is not located on the local network?
"The ANDing process"
The host would ARP to determine if the host is local or not.
The DHCP notifies the host if the IP is remote or not.
Any host will transmit all packets to the default gateway


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?
255.255.255.192
255.255.224.0
255.255.255.224
255.255.255.128


Which of the following is not a valid TCP/IP protocol layer ?
Session
Application
Transport
Internetwork


Which of the following is the decimal and hexadecimal equivalents of the binary number 01101101?
182, 7D
109, 6D
182, 6D
109, 6F


VERSION, IHL, TOS etc are valid properties of which of the following?
Subnet
IP datagram
IP Header
IP Data


What layer in the TCP/IP stack is equivalent to the Transport layer of the OSI model?
Host-to-Host
Internet
Network Access
Application


What is binary 00011000.01001100.01111001.00001010 equivalent to in Decimal?
24.67.121.11
24.76.121.10
24.77.121.10
24.76.211.10


Which of the following protocols was designed to overcome the weaknesses of RARP (Reverse Address Resolution Protocol)?
Address Resolution Protocol (ARP)
Internet Group Management Protocol (IGMP)
Reverse Address Resolution Protocol (RARP)
Bootstrap Protocol (BOOTP)


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?
94.1482%
97.3333%
95.9264%
96.1781%


What is the maximum size of RIP datagrams?
256 octet
64 octet
128 octet
512 octet


Which of the following socket bypass the normal TCP/IP processing?
All of the given options are valid
Raw socket
Datagram socket
Stream socket


Which of the following is incorrect about an IPv4 address?
An IP address can be considered to consist of a Network Part and a Host Part
An IP address is a logical address
An IP address is globally unique in an internetwork
An IP address is 32 bytes long


Which of the following protocol messages belong to STD 6?
Internet Protocol (IP)
Internet Control Message Protocol (ICMP)
User Datagram Protocol (UDP)
Address Resolution Protocol (ARP)


Which of the following is NOT a protocol associated with the TCP/IP internetwork layer?
Internet Control Message Protocol (ICMP)
Address Resolution Protocol (ARP)
User Datagram Protocol (UDP)
Internet Protocol (IP)

Which of the following is a VALID use of IP address 24.0.0.0/8?
"This" network
Cable television networks
Public-data networks
Multicast

No comments:

Post a Comment