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Categories >> Certifications >> Cisco Certifications >> CCNA
 
 


 

 
 CCNA interview questions  CCNA Interview Questions (1883)
 CCDA interview questions  CCDA Interview Questions (88)
Question
Which protocol will let neighbor routers know if your
internetwork

experienced congestion on a serial port?

A.) BootP

B.) IP

C.) ICMP

D.) ARP

E.) FTP

F.) RARP
 Question Submitted By :: CCNA
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Answer: C

Internet Control Message Protocol - ICMP is a management
protocol and

messaging service provider for IP. Its messages are carried
as IP

datagrams.

ICMP is used in the following events:

Destination Unreachable - If a router cannot send an IP
packet any

further, it uses an ICMP echo to send a message back to the
sender

notifying it that the remote node is unreachable.

Buffer Full - If a routers memory buffer is full ICMP will
send out a

message to the originator.

Hops - Each IP datagram is assigned a path. This consists of
hops. If it

goes through the maximum number of hops, the packet is
discarded and the

discarding router sends an ICMP echo to the host.

Ping - Ping use ICMP echo message to check connectivity.
 
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Other CCNA Interview Questions
 
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what is difference between designated router and backup designated router and explain feature of both router. HCL 6
Which of the following are ways to provide login access to a router? A.) HTTP B.) Console C.) Telnet D.) Aux Port E.) SNMP F.) LLC   2
Which of the following is an example of the Network Layer? A.) Token Ring B.) RARP C.) LLC D.) DDP E.) TCP   1
can we configure multiple as on single router using eigrp IBM 1
Where is the backup configuration file stored? A.) RAM B.) ROM C.) Console D.) NVRAM   1
Which device works at the Network Layer of the OSI model? Router Switch Bridge Hub IBM 5
Which of the following are valid Cisco encapsulation type names? A.) arpa = IPX Ethernet B.) novell-ether = IPX Ethernet_802.3 C.) snap = IEEE 802.2 SNAP on Ethernet, FDDI, and Token Ring D.) novell-fddi = IPX Fddi_Raw E.) sap = IEEE 802.2 on Ethernet, FDDI, and Token Ring F.) hdlc = HDLC on serial interfaces   1
You have just issued the erase startup-config Command and reloaded your router. In which mode will your router be when you react? A. setup B. startup C. user EXEC D. userd privileged E. global configuration   3
Which can be logged by IPX extended access lists? A.) source address B.) protocol C.) source socket D.) access list number E.) destination socket F.) destination address   1
When configuring the subnet mask for an IP address, which formats can be used?A. dotted-decimal. B. Hexadecimal C. Bit-count D. Octal E. Binary   1
When you mistakenly type the wrong command at the Router# prompt the router does a DNS lookup which takes about 20 seconds. Which command can you enter to prevent the router doing this in future?   2
To which layer ICMP belongs CMS 7
 
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