Chapter 2: TCP/IP
QUESTION 8
Refer to the exhibit. Both switches are using a default configuration. Which two destination addresses will
host 4 use to send data to host 1? (Choose two.)
A.
B.
C.
D.
E.
F.
the IP address of host 1
the IP address of host 4
the MAC address of host 1
the MAC address of host 4
the MAC address of the Fa0/0 interface of the R1 router
the MAC address of the Fa0/1 interface of the R1 router
QUESTION 28
What are two characteristics of Telnet? (Choose two.)
A.
B.
C.
D.
E.
It sends data in clear text format.
It is no longer supported on Cisco network devices.
It is more secure than SSH.
It requires an enterprise license in order to be implemented.
It requires that the destination device be configured to support Telnet connections.
QUESTION 31
A host is attempting to send data to another host on a different network. What is the first action that the
sending host will take?
A.
B.
C.
D.
Drop the data.
Send the data frames to the default gateway.
Create an ARP request to get a MAC address for the receiving host.
Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.
QUESTION 64
A network admin wants to know every hop the packets take when he accesses cisco.com. Which
command is the most appropriate to use?
A.
B.
C.
D.
path cisco.com
debug cisco.com
trace cisco.com
traceroute cisco.com
QUESTION 75
Which two tasks does the Dynamic Host Configuration Protocol perform? (Choose two.)
A.
B.
C.
D.
E.
F.
Set the IP gateway to be used by the network.
Perform host discovery used DHCPDISCOVER message.
Configure IP address parameters from DHCP server to a host.
Provide an easy management of layer 3 devices.
Monitor IP performance using the DHCP server.
Assign and renew IP address from the default pool.
QUESTION 84
Where does routing occur within the DoD TCP/IP reference model?
A.
B.
C.
D.
application
internet
network
transport
QUESTION 91
Which statement describes the process of dynamically assigning IP addresses by the DHCP server?
A. Addresses are allocated after a negotiation between the server and the host to determine the length of
the agreement.
B. Addresses are permanently assigned so that the hosts uses the same address at all times.
C. Addresses are assigned for a fixed period of time, at the end of the period, a new request for an address
must be made.
D. Addresses are leased to hosts, which periodically contact the DHCP server to renew the lease.
QUESTION 92
Which network protocol does DNS use?
A.
B.
C.
D.
E.
FTP
TFTP
TCP
UDP
SCP
QUESTION 93
When two hosts are trying to communicate across a network, how does the host originating the
communication determine the hardware address of the host that it wants to "talk" to?
A.
B.
C.
D.
E.
RARP request
Show Network Address request
Proxy ARP request
ARP request
Show Hardware Address request
QUESTION 95
An administrator attempts a traceroute but receives a "Destination Unreadable" message. Which protocol
is responsible for that message?
A.
B.
C.
D.
RARP
RUDP
ICMP
SNMP
QUESTION 111
Which command is used to see the path taken by packets across an IP network?
A.
B.
C.
D.
show ip route
show route
traceroute
trace ip route
QUESTION 148
Refer to the exhibit. An administrator pings the default gateway at 10.10.10.1 and sees the output as
shown. At which OSI layer is the problem?
A.
B.
C.
D.
E.
data link layer
application layer
access layer
session layer
network layer
QUESTION 161
Refer to the exhibit. After HostA pings HostB, which entry will be in the ARP cache of HostA to support
this transmission?
A.
B.
C.
D.
E.
F.
QUESTION 171
An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP
ports 21, 23 and 25. What types of packets will be permitted by this ACL? (Choose three.)
A.
B.
C.
D.
E.
F.
FTP
Telnet
SMTP
DNS
HTTP
POP3
QUESTION 179
Which of the following are types of flow control? (Choose three.)
A.
B.
C.
D.
E.
buffering
cut-through
windowing
congestion avoidance
load balancing
QUESTION 212
A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a
host that has been newly connected to the network. Which protocols were used during the test? (Choose
two.)
A.
B.
C.
D.
E.
ARP
CDP
DHCP
DNS
ICMP
QUESTION 251
Which protocol should be used to establish a secure terminal connection to a remote network device?
Select the best response.
A.
B.
C.
D.
E.
F.
ARP
SSH
Telnet
WEP
SNMPv1
SNMPv2
QUESTION 261
An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is
received, what does this confirm?
A.
B.
C.
D.
E.
The PC has connectivity with a local host.
The PC has connectivity with a Layer 3 device.
The PC has a default gateway correctly configured
The PC has connectivity up to Layer 5 of the OSI model
The PC has the TCP/IP protocol stack correctly installed.
QUESTION 267
What is the purpose using the traceroute command?
A.
B.
C.
D.
E.
to map all the devices on a network.
to display the current TCP/IP configuration values.
to see how a device MAC address is mapped to its IP address.
to see the path a packet will take when traveling to a specified destination.
to display the MTU values for each router in a specified network path from source to a destination.
QUESTION 274
Which statement is correct regarding the operation of DHCP?
A.
B.
C.
D.
A DHCP client uses a ping to detect address conflicts.
A DHCP server uses a gratuitous ARP to detect DHCP clients.
A DHCP client uses a gratuitous ARP to detect a DHCP server.
If an address conflict is detected, the address is removed from the pool and an administrator must
resolve the conflict.
E. If an address conflict is detected, the address removed from the pool for an amount of time configurable
by the administrator.
F. If an address conflict is detected, the address is removed from the pool and will not be reused until
server is rebooted.
QUESTION 350
A TCP/IP Transfer is diagrammed in the exhibit.
A window size of three has been negotiated for this transfer. Which message will be returned from the
receiver to the sender as part of this TCP/IP transfer?
A.
B.
C.
D.
E.
F.
Send ACK 1-3
Send ACK 3
Send ACK 4
Send ACK 4-6
Send ACK 6
Send ACK 7
Answer Key
Answer 8: AF
Answer 28: AE
Answer 31: C
Answer 64: D
Answer 75: CF
Answer 84: B
Answer 91: D
Answer 92: D
Answer 93: D
Answer 95: C
Answer 111: C
Answer 148: E
Answer 161: D
Answer 171: DEF
Answer 179: ACD
Answer 212: AE
Answer 251: B
Answer 261: E
Answer 267: D
Answer 274: E
Answer 350: C