What is the administrator configuring?

a Cisco Express Forwarding instance

a routed port*

a trunk interface

a switched virtual interface

19
Which statement is true about MAC addresses?

The first three bytes are used by the vendor assigned OUI.*

MAC addresses are implemented by software.

The ISO is responsible for MAC addresses regulations.

A NIC only needs a MAC address if connected to a WAN.

Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?

The switch will forward the frame to all ports.

The switch will forward the frame to all ports except port 4.*

The switch will forward the frame only to port 2.

The switch will discard the frame.

The switch will forward the frame only to ports 1 and 3.
21
Fill in the blank.
The binary number 0000 1010 can be expressed as “ A ” in hexadecimal.
22
What are two features of ARP? (Choose two.)

If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.*

An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.

When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.

If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.*

If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.

CCNA 1 R&S ITN Chapter 6 v5.0 Exam Answers 2014

1
After troubleshooting a router, the network administrator wants to save the router configuration so that it will be used automatically the next time that the router reboots. What command should be issued?
copy startup-config flash
copy running-config flash
reload
copy startup-config running-config
copy running-config startup-config*

2
Which IPv4 header field is responsible for defining the priority of the packet?​
traffic class
flow label
flags
differentiated services*
3
When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?
Transport layer UDP protocols
upper-layer connection-oriented protocols*
connectionless acknowledgements
Network layer IP protocols
4
Why is NAT not needed in IPv6?​
Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​*
The end-to-end connectivity problems that are caused by NAT are solved because the number of routes increases with the number of nodes that are connected to the Internet.
Because IPv6 has integrated security, there is no need to hide the IPv6 addresses of internal networks.​
The problems that are induced by NAT applications are solved because the IPv6 header improves packet handling by intermediate routers.​

Refer to the exhibit. Fill in the blank.
A packet leaving PC-1 has to traverse “ three ” hops to reach PC-4.​

6
Which two interfaces will allow access via the VTY lines to configure the router? (Choose two.)
console interfaces
USB interfaces
WAN interfaces*
LAN interfaces*
aux interfaces

7
A technician is manually configuring a computer with the necessary IP parameters to communicate over the corporate network. The computer already has an IP address, a subnet mask, and a DNS server. What else has to be configured for Internet access?
the default gateway address*
the MAC address
the domain name of the organization
the WINS server address

8
Which three commands are used to set up a password for a person who attaches a cable to a new router so that an initial configuration can be performed? (Choose three.)
password cisco *
line vty 0 4
line console 0 *
interface fastethernet 0/0
enable secret cisco
login *

11
Which statement about router interfaces is true?
Commands that apply an IP address and subnet mask to an interface are entered in global configuration mode.
Once the no shutdown command is given, a router interface is active and operational.
Router LAN interfaces are not activated by default, but router WAN interfaces are.
A configured and activated router interface must be connected to another device in order to operate.*

12
A technician is configuring a router that is actively running on the network. Suddenly, power to the router is lost. If the technician has not saved the configuration, which two types of information will be lost? (Choose two.)
routing table*
ARP cache*
Cisco IOS image file
startup configuration
bootstrap file

14
How do hosts ensure that their packets are directed to the correct network destination?
They always direct their packets to the default gateway, which will be responsible for the packet delivery.
They send a query packet to the default gateway asking for the best route.
They search in their own local routing table for a route to the network destination address and pass this information to the default gateway.
They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​*

15
What is a service provided by the Flow Label field of the IPv6 header?
It identifies the total length of the IPv6 packet.
It limits the lifetime of a packet.
It informs network devices to maintain the same path for real-time application packets.*
It classifies packets for traffic congestion control.

16
During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
look up the next-hop address for the packet
discard the traffic after consulting the route table
switch the packet to the directly connected interface*
analyze the destination IP address

17
Fill in the blank.

In a router, “ ROM ” is the nonvolatile memory where the diagnostic software, the bootup instructions, and a limited IOS are stored.

18
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
netstat -s
route print*
netstat -r*
tracert
show ip route

19
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
The packet will be sent directly to the destination host.*
The packet will be sent only to the default gateway.
The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host.
The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.

20
Which command displays a summary chart of all router interfaces, their IP addresses, and their current operational status?
show interfaces
show version
show ip route
show ip interface brief *

21
Which two files, if found, are copied into RAM as a router with the default configuration register setting boots up? (Choose two.)
POST diagnostics
running configuration
startup configuration*
IOS image file*

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question or complete the task.

Does the router have enough RAM and flash memory to support the new IOS?
The router needs more RAM and more flash memory for the IOS upgrade.
The router has enough RAM, but needs more flash memory for the IOS upgrade.
The router has enough RAM and flash memory for the IOS upgrade.*
The router has enough flash memory, but needs more RAM for the IOS upgrade.

23
When would the Cisco IOS image held in ROM be used to boot the router?
when the running configuration directs the router to do this
during a normal boot process
when the full IOS cannot be found*
during a file transfer operation

CCNA 1 R&S ITN Chapter 7 v5.0 Exam Answers 2014

Thursday, February 20, 2014

CCNA 1 R&S ITN Chapter 7 v5.0 Exam Answers 2014

1
A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?
1 segment
10 segments*
100 segments
1000 segments

2
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?
multiplexing *
window size
acknowledgments
port numbers

3
A technician wishes to use TFTP to transfer a large file from a file server to a remote router. Which statement is correct about this scenario?
The file is segmented and then reassembled in the correct order by TCP.
The file is not segmented, because UDP is the transport layer protocol that is used by TFTP.
Large files must be sent by FTP not TFTP.
The file is segmented and then reassembled in the correct order at the destination, if necessary, by the upper-layer protocol.*

5
Which scenario describes a function provided by the transport layer?
A student is using a classroom VoIP phone to call home. The unique identifier burned into the phone is a transport layer address used to contact another network device on the same network.
A corporate worker is accessing a web server located on a corporate network. The transport layer formats the screen so the web page appears properly no matter what device is being used to view the web site.
A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.*
A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.

6
Which transport layer feature is used to guarantee session establishment?
UDP ACK flag
TCP 3-way handshake*
UDP sequence number
TCP port number

7
What is the complete range of TCP and UDP well-known ports?
0 to 255
256 – 1023
0 to 1023*
1024 – 49151

8
Which two TCP header fields are used to confirm receipt of data?
checksum
acknowledgment number*
FIN flag
sequence number*
SYN flag

9
​What is a beneficial feature of the UDP transport protocol?
acknowledgment of received data
tracking of data segments using sequence numbers
fewer delays in transmission*
the ability to retransmit lost data

10
Which two flags in the TCP header are used in a TCP three-way handshake to establish connectivity between two network devices? (Choose two.)
RST
FIN
SYN*
ACK*
URG
PSH

11
What happens if the first packet of a TFTP transfer is lost?
The TFTP application will retry the request if a reply is not received.*
The next-hop router or the default gateway will provide a reply with an error code.
The client will wait indefinitely for the reply.
The transport layer will retry the query if a reply is not received.

12
Compared to UDP, what factor causes additional network overhead for TCP communication?
the identification of applications based on destination port numbers
the checksum error detection
the encapsulation into IP packets
network traffic that is caused by retransmissions*

14
Which factor determines TCP window size?
the amount of data the destination can process at one time*
the number of services included in the TCP segment
the amount of data the source is capable of sending at one time
the amount of data to be transmitted

16
During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
the last sequence number that was sent by the source
one number more than the sequence number
the next byte that the destination expects to receive*
the total number of bytes that have been received

17
What is a socket?
the combination of the source and destination sequence numbers and port numbers
the combination of the source and destination sequence and acknowledgment numbers
the combination of a source IP address and port number or a destination IP address and port number*
the combination of the source and destination IP address and source and destination Ethernet address

18
Fill in the blank.
During a TCP session, the ” SYN ” field is used by the client to request communication with the server.

19
Fill in the blank using a number.

A total of “ 4 ” messages are exchanged during the TCP session termination process between the client and the server.

20
A host device sends a data packet to a web server via the HTTP protocol. What is used by the transport layer to pass the data stream to the proper application on the server?
source port number
destination port number*
sequence number
acknowledgment

21
What does a client do when it has UDP datagrams to send?
It just sends the datagrams.*
It queries the server to see if it is ready to receive data.
It sends a simplified three-way handshake to the server.
It sends to the server a segment with the SYN flag set to synchronize the conversation.

22
What does a client application select for a TCP or UDP source port number?
a predefined value in the dynamic port range
a predefined value in the range of the registered ports
a predefined value in the well-known port range
a random value in the dynamic port range
a random value in the range of the registered ports*
a random value in the well-known port range

CCNA 1 R&S ITN Chapter 8 v5.0 Exam Answers 2014

1
Fill in the blank.
The decimal equivalent of the binary number 10010101 is ” 149 ”.
2

Place the options in the following order:

[+] 192.168.100.161/25

[+] 203.0.113.100/24

[+] 10.0.50.10/30

[#] 192.168.1.80/29

[#] 172.110.12.64/28

[#] 10.10.10.128/25

[*] 10.0.0.159/27

[*] 192.168.1.191/26
[+] Order does not matter within this group.

[#] Order does not matter within this group.

[*] Order does not matter within this group.

3
What is indicated by a successful ping to the::1 IPv6 address?

The link-local address is correctly configured.

The default gateway address is correctly configured.

The host is cabled properly.

All hosts on the local link are available.

IP is properly installed on the host.*

Launch PT - Hide and Save PT
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

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