Define ICMP.

Define ICMP.
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Answer :

Internet Control Message Protocol is a collection of error messages that are sent back to the source  host whenever a router or host is unable to process an IP datagram successfully.
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Which of the following is true about ICMP messages? A) An ICMP error message may be generated for an ICMP error message. B) An ICMP error message may be generated only for the first fragment. C) An ICMP error message may be generated for a multicast datagram. D) noneis true

Description : Which of the following is true about ICMP messages? A) An ICMP error message may be generated for an ICMP error message. B) An ICMP error message may be generated only for the first fragment. C) An ICMP error message may be generated for a multicast datagram. D) noneis true

Last Answer : An ICMP error message may be generated only for the first fragmen

Which of the following is true about ICMP messages? A) An ICMP error message may be generated for an ICMP error message. B) An ICMP error message may be generated for each fragment. C) An ICMP error message may be generated for a multicast datagram. D) noneis true

Description : Which of the following is true about ICMP messages? A) An ICMP error message may be generated for an ICMP error message. B) An ICMP error message may be generated for each fragment. C) An ICMP error message may be generated for a multicast datagram. D) noneis true

Last Answer : noneis true

An ICMP message has _____ headerand a variable-size data section. A) a 16-byte B) a 32-byte C) an 8-byteD) noneof the above

Description : An ICMP message has _____ headerand a variable-size data section. A) a 16-byte B) a 32-byte C) an 8-byte D) noneof the above

Last Answer : an 8-byte

ICMP messagesare divided into two broad categories: _____________. A) query and error reporting messages B) request and response messages C) request and reply messages D) noneof the above

Description : ICMP messagesare divided into two broad categories: _____________. A) query and error reporting messages B) request and response messages C) request and reply messages D) noneof the above

Last Answer : query and error reporting messages

ICMP is a _________ layer protocol. A) datalink B) transport C) network D) noneof the above

Description : ICMP is a _________ layer protocol. A) datalink B) transport C) network D) noneof the above

Last Answer : network

ICMP (Internet Control Message Protocol) is A. a TCP/IP protocol used todynamically bind ahigh level IP Address to alow-level physical hardware address B. a TCP/IP high level protocol for transferring filesfrom one machine to another C. a protocol used to monitor computersD.a protocol that handles error andcontrol messagesE.None of the above

Description : ICMP (Internet Control Message Protocol) is A. a TCP/IP protocol used todynamically bind ahigh level IP Address to alow-level physical hardware address B. a TCP/IP high level protocol for transferring ... to monitor computers D. a protocol that handles error andcontrol messages E. None of the above

Last Answer : a protocol that handles error andcontrol messages

The Internet Control Message Protocol (ICMP) A. allows gateways to send error acontrol messages toother gateways or hosts B. provides communication between the Internet Protocol Software on one machine and the InternetProtocol Software on another C. reports error conditions tothe original source, the source must relate errors to individual applicationprograms and takeaction to correct theproblem D. All of theabove E. None of the above

Description : The Internet Control Message Protocol (ICMP) A. allows gateways to send error acontrol messages toother gateways or hosts B. provides communication between the Internet Protocol Software on one machine ... and takeaction to correct theproblem D. All of theabove E. None of the above

Last Answer : All of theabove

A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT a. block entire HTTP traffic during 9:00PM and 5 :0OAM b. block all ICMP trafficc. stop incoming traffic from a specific IP address but allow outgoing traffic to the same IP address d. block TCP traffic from a specific user on a multi-user system during 9:00PM and 5:00AM

Description : A layer-4 firewall (a device that can look at all protocol headers up to the transport layer) CANNOT a. block entire HTTP traffic during 9:00PM and 5 :0OAM b. block all ICMP traffic c. stop ... address d. block TCP traffic from a specific user on a multi-user system during 9:00PM and 5:00AM

Last Answer : d. block TCP traffic from a specific user on a multi-user system during 9:00PM and 5:00AM

What are the problems involved in an IP Fragmentation Process? A. Loss of any fragment results in rejection of all datagrams B. Management of buffer space is essential to handle reassembly process C. No necessity of initializing the timer after the reception of initial fragment D. Multiple attempts can be made to recover ICMP error message due to connection-oriented IP service a. A & B b. C & D c. B& C d. A & D

Description : What are the problems involved in an IP Fragmentation Process? A. Loss of any fragment results in rejection of all datagrams B. Management of buffer space is essential to handle reassembly process C. No necessity of initializing ... -oriented IP service a. A & B b. C & D c. B& C d. A & D

Last Answer : a. A & B

Which among the below stated datagram discard code fields in ICMP is/are generated if a router fails to forward a packet due to administrative filtering? a. Source Route Failed b. Communication Administratively Prohibited c. Host Precedence Violation d. Precedence Cut-off in Effect

Description : Which among the below stated datagram discard code fields in ICMP is/are generated if a router fails to forward a packet due to administrative filtering? a. Source Route Failed b. Communication Administratively Prohibited c. Host Precedence Violation d. Precedence Cut-off in Effect

Last Answer : b. Communication Administratively Prohibited

Which field/s of ICMPv6 packet header has/have a provision of minimal integrity level concerning to verification for ICMP messages? a. Type b. Code c. Checksum d. All of the above

Description : Which field/s of ICMPv6 packet header has/have a provision of minimal integrity level concerning to verification for ICMP messages? a. Type b. Code c. Checksum d. All of the above

Last Answer : c. Checksum

ICMP stands for __________ a. Internet Coordinate Message Protocol b. Internet Control Message Protocol c. Interconnect Control Message Protocol d. Interconnect Coordinate Message Protocol

Description : ICMP stands for __________ a. Internet Coordinate Message Protocol b. Internet Control Message Protocol c. Interconnect Control Message Protocol d. Interconnect Coordinate Message Protocol

Last Answer : b. Internet Control Message Protocol

ICMP is primarily used for __________ a. error and diagnostic functions b. addressing c. forwarding d. routing

Description : ICMP is primarily used for __________ a. error and diagnostic functions b. addressing c. forwarding d. routing

Last Answer : a. error and diagnostic functions

Which protocol does switch use at the layer 2 for finding MAC address? a. ICMP b. UDP c. ARP d. TCP

Description : Which protocol does switch use at the layer 2 for finding MAC address? a. ICMP b. UDP c. ARP d. TCP

Last Answer : c. ARP

State weather the following statement is true or false for Internetwork layer. 1).Other internetwork-layer protocols are IP, ICMP, IGMP, ARP, and RARP. 2). Internet Protocol (IP) is the least important protocol in this layer 3). The internetwork layer, also called the internet layer or the network layer, provides the “virtual network” A. 1. True, 2. true, 3. true B. 1. true, 2. false, 3.true C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Description : State weather the following statement is true or false for Internetwork layer. 1).Other internetwork-layer protocols are IP, ICMP, IGMP, ARP, and RARP. 2). Internet Protocol (IP) is the least important protocol in this layer ... 3.true C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Last Answer : B. 1. true, 2. false, 3.true

What is ICMP ?

Description : What is ICMP ?

Last Answer : This ICMP ( Internet Control Message Protocol) protocol works with transmission errors . This ICMP uses TCP / IP and Ping utilities.

Which protocol carries messages such as destination Unreachable, Time Exceeded, Parameter Problem, Source Quench, Redirect, Echo, Echo Reply, Timestamp, Information Request, Information Reply, Address Request, and Address Reply? * ICMP * UDP * TCP * TFTP

Description : Which protocol carries messages such as destination Unreachable, Time Exceeded, Parameter Problem, Source Quench, Redirect, Echo, Echo Reply, Timestamp, Information Request, Information Reply, Address Request, and Address Reply? * ICMP * UDP * TCP * TFTP

Last Answer : Correct answer: A ICMP (Internet Control Message Protocol) is a network layer internet protocol described in RFC # 792. ICMP reports IP packet information such as destination Unreachable, Time ... Echo Reply, Timestamp, Information Request, Information Reply, Address Request, and Address Reply.

In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, iii and iv only B) i, iii, iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, ... iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, iii and iv only B) i, iii, iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii ... and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

………………….. is responsible for converting the higher level protocol addresses (IP addresses) to physical network addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Description : ………………….. is responsible for converting the higher level protocol addresses (IP addresses) to physical network addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Last Answer : A) Address Resolution Protocol (ARP)

The most important and common protocols associated TCP/IP internetwork layer are. i) Internet protocol(IP) ii) Internet control Message Protocol(ICMP) iii) Bootstrap Protocol (BooTP) iv) Dynamic Host Configuration Protocol (DHCP) v) Address Resolution Protocol (ARP) A) i, ii, iii and iv only B) i, iii, iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : The most important and common protocols associated TCP/IP internetwork layer are. i) Internet protocol(IP) ii) Internet control Message Protocol(ICMP) iii) Bootstrap Protocol (BooTP) iv) Dynamic Host Configuration Protocol (DHCP) v) ... C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

........ is responsible for converting the higher level protocol addresses to physical Network Addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Description : ........ is responsible for converting the higher level protocol addresses to physical Network Addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Last Answer : D) Internet Control Message Protocol (ICMP)

The most important and common protocols associated TCP/IP internetwork layer are. i) Internet Protocol (IP) ii) Internet Control Message Protocol (ICMP) iii) Bootstrap Protocol (BOOTP) iv) Dynamic Host Configuration Protocol (DHCP) V) Address Resolution Protocol (ARP) A) i, ii, iii, and iv only B) ii, iii, iv and v only C) i, iii, iv and v only D) All i, ii, iii, iv and v only

Description : The most important and common protocols associated TCP/IP internetwork layer are. i) Internet Protocol (IP) ii) Internet Control Message Protocol (ICMP) iii) Bootstrap Protocol (BOOTP) iv) Dynamic Host Configuration Protocol (DHCP) V) ... C) i, iii, iv and v only D) All i, ii, iii, iv and v only

Last Answer : D) All i, ii, iii, iv and v only

........... is responsible for converting the higher level protocol addresses to physical Network Addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Description : ........... is responsible for converting the higher level protocol addresses to physical Network Addresses. A) Address Resolution Protocol (ARP) B) Reverse Address Resolution Protocol (RARP) C) Bootstrap Protocol (BOOTP) D) Internet Control Message Protocol (ICMP)

Last Answer : A) Address Resolution Protocol (ARP)

The most important and common protocols associated TCP/IP internetwork layer are. i) Internet Protocol (IP) ii) Internet Control Message Protocol (ICMP) iii) Bootstrap Protocol (BOOTP) iv) Dynamic Host Configuration Protocol (DHCP) V) Address Resolution Protocol (ARP) A) i, ii, iii, and iv only B) ii, iii, iv and v only C) i, iii, iv and v only D) All i, ii, iii, iv and v only

Description : The most important and common protocols associated TCP/IP internetwork layer are. i) Internet Protocol (IP) ii) Internet Control Message Protocol (ICMP) iii) Bootstrap Protocol (BOOTP) iv) Dynamic Host Configuration Protocol (DHCP) V) ... C) i, iii, iv and v only D) All i, ii, iii, iv and v only

Last Answer : D) All i, ii, iii, iv and v only

7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from the sender to the destination network. C. It uses a protocol that will be rejected by the gateway to determine the location. D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Description : 7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from ... the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Last Answer : D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Which protocol does hackers use to make their system seems as your system or another allowed host on your network? a. SNMP protocol b. TCP protocol c. ARP protocol d. ICMP protocol

Description : Which protocol does hackers use to make their system seems as your system or another allowed host on your network? a. SNMP protocol b. TCP protocol c. ARP protocol d. ICMP protocol

Last Answer : c. ARP protocol

Explain ICMP protocol. Describe the header format of ICMP.

Description : Explain ICMP protocol. Describe the header format of ICMP.

Last Answer : The Internet Control Message Protocol (ICMP) supports the unreliable and connectionless Internet Protocol (IP). * ICMP messages are encapsulated in IP datagrams. There are two categories of ICMP messages ... query messages, the data section carries extra information based on the type of the query.

In________framing, we need adelimiter (flag) to define the boundary of two frames. A) fixed-size B) variable-size C) standard D) none of the above

Description : In________framing, we need adelimiter (flag) to define the boundary of two frames. A) fixed-size B) variable-size C) standard D) none of the above

Last Answer : variable-size

In IGMP, the general query message ___________________ group. A) doesnot define a particular B) explicitly defines a C) candefine more thanone D) noneof the above

Description : In IGMP, the general query message ___________________ group. A) doesnot define a particular B) explicitly defines a C) candefine more thanone D) noneof the above

Last Answer : doesnot define a particular

It is more accurate to define a _____ as a variety of different recordtypes that aretreated as asingle unit A. Database B. Table C. Record D. Flat File E. None of the above

Description : It is more accurate to define a _____ as a variety of different recordtypes that aretreated as asingle unit A. Database B. Table C. Record D. Flat File E. None of the above

Last Answer : Database

There arecertain packages that allow people to define data items, place these items in particular records, combine therecords into designated files and then manipulate and retrieve the storeddata. What arethey called? A. Data storage system B. Database management system (DBMS) C. Batch processingsystem D. Data communication package E. None of the above

Description : There arecertain packages that allow people to define data items, place these items in particular records, combine therecords into designated files and then manipulate and retrieve the storeddata. What arethey ... (DBMS) C. Batch processingsystem D. Data communication package E. None of the above

Last Answer : Database management system (DBMS)

State weather the following statement is true or false for Sendmail. 1).Sendmail is a command-line tool designed for most UNIX-like operating systems. 2).It define a method of transferring mail, and acts as a client/server that supports multiple mail protocols 3). Sendmail exists in both open source and proprietary software packages. A. 1. True, 2. False, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Description : State weather the following statement is true or false for Sendmail. 1).Sendmail is a command-line tool designed for most UNIX-like operating systems. 2).It define a method of transferring mail, and acts as a client/server ... . false C. 1. false, 2. false, 3. false D. 1. true, 2. true, 3. false

Last Answer : A. 1. True, 2. False, 3. true

The _______ domains define registered hosts according to their general behavior. A. generic B. country C. inverse D. none of the above

Description : The _______ domains define registered hosts according to their general behavior. A. generic B. country C. inverse D. none of the above

Last Answer : A. generic

The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________ A. UDP addresses B. transport addresses C. port addresses D. none of the above

Description : The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________ A. UDP addresses B. transport addresses C. port addresses D. none of the above

Last Answer : C. port addresses

Define PGP and SSH

Description : Define PGP and SSH

Last Answer : Pretty Good Privacy is used to provide security for electronic mail. It provides authentication, confidentiality, data integrity, and non repudiation. A collection of public domain software ... commands and transfer files and also provide strong client/server authentication / message integrity.

Define Gateway.

Description : Define Gateway.

Last Answer : A device used to connect two separate networks that use different communication protocols.

Define Congestion Control.

Description : Define Congestion Control.

Last Answer : It involves preventing too much data from being injected into the network, thereby causing switches or links to become overloaded. Thus flow control is an end to an end issue, while congestion control is concerned with how hosts and networks interact.

Define Subnetting

Description : Define Subnetting

Last Answer : Subnetting provides an elegantly way to reduce the total number of network numbers that are assigned. It takes a single IP network number and allocate the IP address with that network to several physical networks, which are referred as subnets.

Define Reliable flooding.

Description : Define Reliable flooding.

Last Answer : It is the process of making sure that all the nodes participating in the routing protocol get a copy of the link state information from all the other nodes.

Define Routing. What is distance vector routing?

Description : Define Routing. What is distance vector routing?

Last Answer : The process by which nodes exchange topological information to build correct forwarding tables. A lowest cost path algorithm used in routing. Each node advertises reachability information and associated costs ... , uses the updates it receives to construct its forwarding table. RIP uses it.

Define flowcontrol. Mention the categories of it.

Description : Define flowcontrol. Mention the categories of it.

Last Answer : Flowcontrol refers to a set of procedures usedtorestrict the amount ofdata.Thesender cansenddata before waiting for acknowledgment.

Define checksum. What are the steps followedinchecksumgenerator?

Description : Define checksum. What are the steps followedinchecksumgenerator?

Last Answer : The error detection method used by the higher layer protocol iscalledchecksum. Checksumisbased on redundancy. a) Units are divided into k sections eachof n bits. b) All sectionsareaddedtogetherusing ... get the sum. c) The sumis complemented andbecomethechecksum.d)Thechecksumissent with the data.

Define Error Detection and Correction. Mention the types of errors.

Description : Define Error Detection and Correction. Mention the types of errors.

Last Answer : Data can be corrupted during transmission. For reliable communication, errors must be detected and corrected. Single bit error: The only one bit of a given data unit (such as byte character/data unit or packet) is ... error: 2 or more bits in the data unit have changed from 1 to 0 from 0 to 1.

Define topology and mention the types of topologies

Description : Define topology and mention the types of topologies

Last Answer : Topology defines the physical or logical arrangement of links in a network. Types of topology : - Mesh - Star - Tree - Bus - Ring

Define line configuration and give its types

Description : Define line configuration and give its types

Last Answer : It refers the way two or more communication devices attach to a link. A network consists of 2 or more computers directly connected by a physical medium. Types: i. Point to point – physical links are limited to a pair of nodes. ii. Multipoint – more than two nodes share a single physical link.