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WorksheetsCCNA(1)
Total questions: 144
Worksheet time: 1hrs 18mins
Your manager asks you which service is responsible for translating the source IP address of a packet to the IP address of the public interface on the router.
DHCP
NAT
DNS
HTTP
You are troubleshooting a communication problem. You seem to be able to communicate with Glen’s website by IP address, but not by the fully qualified domain name (www.gleneclarke.com). What is most likely the problem?
DHCP
NAT
DNS
HTTP
Which network service can be configured on your router that is responsible for assigning IP addresses to systems on the network?
DHCP
NAT
DNS
HTTP
What service on the network is responsible for converting the FQDN to an IP address?
Authentication server
DNS server
DHCP server
NAT
What service on the network is responsible for verifying username and passwords when the user attempts to log on?
Authentication server
DNS server
DHCP server
NAT
You are monitoring network traffic and you notice a number of DHCP discover messages on the network. Which of the following is the destination address of the DHCP discover message?
0F-1B-3C-2F-3C-2A
FF-FF-FF-FF-FF-FF
192.168.4.5
192.168.0.0
When a client system boots up and requests an IP address, it first must send out which message?
DHCP request
DHCP discover
DHCP response
DHCP ACK
What device is responsible for regenerating the signal so that the signal can travel a greater distance?
Bridge
Router
Repeater
Switch
Hub
Which device filters traffic by looking at the destination address of the frame and then forwards the frame to the port that the destination system resides on?
Hub
Router
Repeater
Switch
Which of the following is a layer-3 device?
Bridge
Router
Repeater
Switch
Hub
A device that can send and receive information, but not at the same time, is said to be _________________.
Simplex
Full duplex
Multicast
Half-duplex
A message that is sent out on the network and is destined for all systems is known as a __________________ message.
Unicast
Multicast
Full duplex
Broadcast
A message that is sent out on the network and is destined for a group of systems is known as a ______________ message.
Unicast
Multicast
Full duplex
Broadcast
A group of systems that can receive one another’s broadcast messages is known as a __________________.
Collision domain
Active directory domain
Fully qualified domain name
Broadcast domain
You are monitoring network traffic and notice that there is a large number of broadcast messages sent across the wire. You would like to separate your network into multiple broadcast domains. How can you do this? (Select two.)
Switch
VLANs
Router
Bridge
A group of systems that can have their data collide with one another is known as a ____________________.
Broadcast domain
VLAN
Collision domain
Multicast
Sue is having trouble understanding some network concepts and asks you to help identify address types. Which of the following is considered a layer-2 address?
You are troubleshooting communication to a network by looking at the link light on the switch. What layer of the OSI model are you troubleshooting when looking at a link light?
Application
Physical
Network
Data link
What layer of the OSI model is responsible for breaking the data into smaller segments?
Data link
Physical
Network
Transport
Which of the following is considered a layer-3 address?
What layer of the OSI model is responsible for routing and logical addressing?
Network
Physical
Data link
Transport
Which of the following are considered layer-2 devices? (Choose two.)
Bridge
Router
Repeater
Switch
Hub
Which of the following are considered layer-1 devices? (Choose two.)
Bridge
Router
Repeater
Switch
Hub
What is the application layer protocol for delivering e-mail across the Internet?
FTP
SNMP
SMTP
POP3
Which layer of the OSI model works with packets?
Layer 1
Layer 2
Layer 3
Layer 4
What is the application layer protocol for receiving e-mail over the Internet?
FTP
SMTP
SNMP
POP3
Which Gigabit Ethernet standard uses UTP cabling to reach 1000 Mbps?
1000BaseTX
1000BaseSX
1000BaseCX
1000BaseLX
Which 10 Gigabit Ethernet standard uses multimode fiber-optic cabling?
10GBaseLR
10GBaseER
10GBaseSR
1000BaseSX
Which of the following addresses does a router use to determine where a packet needs to be delivered? (Choose two.)
24.56.78.10
00-3B-4C-2B-00-AF
A layer-3 address
A layer-2 address
Which layer of the OSI model works with frames?
Layer 1
Layer 2
Layer 3
Layer 4
What type of cable would you use if you wanted to connect a system to an RJ-45 port on a switch?
Fiber
Crossover
Straight-through
Thinnet
You wish to network two systems by connecting a computer directly to another computer. Which type of cable would you use?
Fiber
Crossover
Straight-through
Thinnet
You need to create a crossover cable. What wires would you cross on one of the ends?
1 and 2 with 3 and 4
2 and 4 with 6 and 8
2 and 4 with 5 and 6
1 and 2 with 3 and 6
You are testing communication to a router and have decided to connect your workstation to the Fast Ethernet port of the router. What type of cable would you use?
Fiber
Crossover
Straight-through
Thinnet
You have a UTP cable that has been configured at both ends with the 568B standard. What type of cable is it?
Straight-through
Crossover
Rollover
Coax
You wish to create a crossover cable and have wired one end of the cable with the 568A standard, What standard should you use to wire the opposite end of the cable?
568B
568A
569B
569A
Which of the following are considered class A addresses? (Select all that apply.)
129.45.10.15
10.35.87.5
131.15.10.12
192.156.8.34
121.59.87.32
Sue is reviewing IP addressing basics and asks you which of the following is considered a class A private address.
24.56.10.12
192.168.0.5
172.16.45.10
10.55.67.99
What is the default subnet mask of a system with the IP address of 189.34.5.67?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
What is the default subnet mask of a class C address?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
Which of the following is a class B private address?
24.56.10.12
192.168.0.5
172.16.45.10
10.55.67.99
Are the systems of 201.45.3.56 and 201.45.5.20 on the same network?
Yes
No
Which of the following addresses are considered invalid addresses to assign to a host on the network? (Select all that apply.)
10.254.255.25
120.127.34.10
190.34.255.255
136.45.68.22
202.45.6.0
The decimal number of 137 is which of the following in binary?
10001001
10101001
11001001
10000101
Are the systems with the IP addresses of 121.56.78.10 and 121.45.6.88 on the same network?
Yes
No
What is the default subnet mask of 130.56.78.10?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
Your system has an IP address of 131.107.45.10. Which of the following systems is on the same network as you?
131.56.10.12
130.107.45.10
131.107.22.15
113.107.45.11
Which of the following addresses are considered invalid addresses to assign to a host on the network? (Select all that apply.)
216.83.11.255
12.34.0.0
10.34.15.22
131.107.0.0
127.15.34.10
The binary number of 01101101 is which of the following decimal values?
101
109
135
143
Which class address always has the value of the first bits in the IP address set to 110?
Class A
Class B
Class C
Class D
Which class address always has the first two bits of the IP address set to 10?
Class A
Class B
Class C
Class D
Which IP address class always has the first bit in the address set to 0?
Class A
Class B
Class C
Class D
Which protocol is responsible for converting the logical address to a physical address?
TCP
IP
ICMP
ARP
The ARP request is sent to which of the following layer-2 destination addresses?
FF-FF-FF-FF-FF-FF
192.168.0.255
00-FF-00-FF-00-FF
00-00-00-00-00-00
What are the three phases of the TCP three-way handshake?
ACK/SYN, SYN, ACK
SYN, ACK/SYN, ACK
ACK/SYN, ACK, SYN
SYN, ACK, SYN/ACK
Which of the following does TCP use to guarantee delivery?
Source and destination IP address
Source and destination port
Sequence numbers and acknowledgements
Sequence numbers and ports
What TCP/IP protocol is responsible for logical addressing and routing functions?
TCP
IP
ICMP
UDP
Which transport layer protocol is responsible for unreliable delivery?
TCP
IP
ICMP
UDP
Which TCP/IP protocol is responsible for error and status reporting?
TCP
IP
ICMP
UDP
The router looks at which field in the IP header to decide where to send the packet?
Source IP address
Destination IP address
Source MAC address
Destination MAC address
What flags are set on the second phase of the three-way handshake?
FIN/SYN
ACK/FIN
ACK/SYN
ACK/RST
Which flag is set in a TCP packet that indicates a previous packet was received?
PSH
FIN
ACK
RST
You wish to allow echo request messages to pass through the firewall. What ICMP type is used in an echo request message?
0
8
3
11
Which of the following are fields found in the IP header? (Select all that apply.)
Sequence number
Destination port
Source IP address
Time to Live
SYN flag
Which of the following are considered application layer protocols?
TCP
IP
FTP
ICMP
Which transport layer protocol is responsible for reliable delivery?
UDP
ICMP
IP
TCP
What ICMP type is used by the echo reply message?
0
3
5
8
The security administrator for your network has asked that you block ping messages from entering your network. What protocol would you block?
ICMP
IP
TCP
UDP
Which TCP flag is responsible for dropping a connection at any point in time?
PSH
FIN
ACK
RST
Which of the following is the IPv6 equivalent to 127.0.0.1?
::127
127::1
::1
FE80::
Your manager has been hearing a lot about IPv6 addressing, and asks you which of the following statements are true about IPv6 unicast addresses? (Select two.)
A link-local address starts with FE00.
A global address starts with 2000
The loopback address is 127::1.
When an interface is assigned a global address, it is allowed only one IP6 address
The loopback address is ::1.
Which of the following is an example of an IPv6 link-local address?
ff00::f407:622c:a0ce:90cc
fe80::f407:622c:a0ce:90cc
fe08::f407:622c:a0ce:90cc
2001::f407:622c:a0ce:90cc
Your manager has asked you what some of the benefits of transitioning from IPv4 to IPv6 are. (Select two.)
IPSec is optional
No broadcast messages
A 64-bit address scheme
Telnet passwords are encrypted
Automatic configuration
Your manager is evaluating IPv6 transitioning technologies and is wondering which IPv6 tunneling method encapsulates the IPv6 data into an IPv4 user datagram to travel over the Internet and can pass through NAT devices.
6-to-4
Dynamic IP
Teredo
Dual stack
You are evaluation how you are going to slowly transition to IPv6. What three techniques can be used to allow migrating from IPv4 to IPv6? (Choose three.)
Broadcast addressing
Translation between IPv6 and IPv4
Multicast to unicast translation
Use of dual-stack routing
Use tunneling protocols
What IPv6 address type is similar to an IPv4 private IP address and starts with FC00?
Global address
Loopback address
Link-local address
Unique local address
SMTP uses which of the following ports?
UDP 53
TCP 21
TCP 23
TCP 25
FTP uses which of the following ports?
25
23
21
53
Which of the following represents the port used by POP3?
21
110
143
443
Which of the following are true statements about TCP ports? (Select all that apply.)
FTP uses TCP ports 21 and 20.
FTP uses TCP ports 11 and 12
HTTP uses TCP port 80.
SMTP uses TCP port 53
SMTP uses TCP port 25.
Which of the following are true statements about ports? (Select all that apply.)
DHCP uses UDP 67/68.
DHCP uses TCP 67/68
SNMP uses UDP 161
SNMP uses TCP 161
DNS uses UDP 53
Sue is unable to surf the Internet and calls you over to her desk to troubleshoot. You use ipconfig on the system and notice the following IP configuration. What is the problem?
Local Area Network Connection:
IPv4 Address…. … .: 169.254.34.56
Subnet Mask… …. .: 255.255.0.0
Default Gateway… …:
The DNS server is down.
The subnet mask is incorrect.
The router is down.
The DHCP server is down.
Bob is unable to surf the Internet and calls you over to his desk to troubleshoot. You use ipconfig on the system and notice the following IP configuration. What should you do?
Local Area Network Connection:
IPv4 Address…. … .: 192.19.210.79
Subnet Mask… …. .: 255.255.255.0
Default Gateway… …: 192.19.0.1
Change his IP address to 169.254.210.79.
Change his IP address to 192.19.0.79.
Change his subnet mask to 255.0.0.0.
Remove his default gateway setting.
You are designing the IPv4 address scheme for the network. How do you calculate the broadcast address of a subnet?
Set all host bits to 0
Set all host bits to 1
Set all network bits to 0
Set all subnet bits to 1
Your manager would like you to subnet the 129.65.0.0 network into six different networks. What is your new subnet mask?
255.224.0.0
255.255.192.0
255.255.224.0
255.255.255.224
What is the subnet mask of 135.44.33.22/20?
255.255.192.0
255.255.240.0
255.255.224.0
255.255.248.0
You are designing the IP address scheme for your network and you need to subnet the 142.65.0.0 network into 12 different networks. What is your new subnet mask?
255.255.240.0
255.255.192.0
255.255.224.0
255.255.248.0
How many host bits are needed in order to support 1,010 systems on the network?
12
10
11
14
How many masked bits are needed in order to create at least 20 subnets?
3
4
5
6
You are designing your IPv4 address scheme. How do you calculate the network ID of a subnet?
Set all host bits to 0.
Set all host bits to 1.
Set all network bits to 1.
Set all subnet bits to 0.
How many hosts can exist on a network with the address of 180.45.10.20/20?
1,024
4,096
4,094
1,022
How many subnet bits do you need to create 6 networks?
3
4
5
6
Which option on the Cisco router indicates that you can use the first and last subnets of a subnetted network?
VLSM
ip subnet-zero
RIPv1
RIPv2
Which of the following subnet masks matched to the CIDR notation is correct?
255.255.255.224 = /27
255.255.192.0 = /19
255.255.240.0 = /27
255.255.255.192 = /28
Your system uses the IP address of 145.68.23.45/25. How many systems are supported on your network?
126
128
64
62
The Fast Ethernet port on a router is assigned the IP address of 131.107.16.1/20. How many hosts can exist on the subnet?
4,096
4,094
1,048,574
1,022
You want to assign your serial interface the third valid IP address in the second subnet of 192.168.2.0/26. Which IP address would you use?
192.168.2.3
192.168.2.35
192.168.2.64
192.168.2.67
You are designing the IP address scheme for a branch office that needs to support 92 systems on the network. What should your subnet mask be?
255.255.255.240
255.255.255.128
255.255.255.248
255.255.255.192
What is the minimum number of host bits needed to support 510 hosts on the network?
12
7
9
14
You wish to subnet 137.15.0.0 in order to support 8,190 hosts on each network. You wish to use the smallest subnet size to support this number of hosts. What will be the new subnet mask?
255.255.255.224
255.255.192.0
255.255.240.0
255.255.224.0
How many hosts can exist on a network with the address of 201.10.20.30/27?
28
30
32
64
With the goal of preserving addresses, which of the following subnet masks would you use to create a subnet of up to 60 hosts?
255.255.255.224
255.255.255.192
255.255.255.252
255.255.255.248
You have a system whose IP address is correctly configured for 198.45.6.87/27. You are now responsible for assigning an IP address to the router. Which of the following IP addresses should be assigned to the router?
198.45.6.95
198.45.6.62
198.45.6.64
198.45.6.94
What is the network ID for the third subnet of 220.55.66.0/27?
220.55.66.32
220.55.66.96
220.55.66.60
220.55.66.64
The 24.60.32.20/11 address is located in which of the following subnets?
24.32.0.0
24.64.0.0
24.96.0.0
24.16.0.0
You need to assign the fourth valid IP address of 107.53.100.10/12 to the Fast Ethernet port on the router. What address would you use?
107.53.0.4
107.53.100.4
107.0.0.4
107.48.0.4
A network administrator is working with the 195.34.56.0 network, which has been subnetted into 8 networks. Which of the following two addresses can be assigned to hosts on the same subnet? (Select two.)
195.34.56.35
195.34.56.58
195.34.56.14
195.34.56.76
195.34.56.129
What is the network ID of 190.53.159.150/22?
190.53.132.0
190.53.144.0
190.53.152.0
190.53.156.0
Which of the following statements are true of 205.56.34.53/28? (Choose three.)
The network ID of the subnet is 205.56.34.48.
The network is subnetted.
The broadcast address of the subnet is 205.56.34.63.
The last valid address of the subnet is 205.56.34.47.
The first valid address of the subnet is 205.56.34.26
What is the broadcast address of 107.50.100.10/12?
107.63.255.255
107.50.255.255
107.48.255.255
107.53.156.0
You need to assign the last valid IP address of 199.45.67.139/26 to the Serial port on your router. What address would you use?
199.45.67.128
199.45.67.126
199.45.67.191
199.45.67.190
What is the last valid address for the subnet of 220.55.66.64/27?
220.55.66.32
220.55.66.94
220.55.66.62
220.55.66.64
Which of the following addresses exists on the same network, knowing that all systems have a subnet mask of 255.255.255.240? (Select two.)
195.34.56.7.14
195.34.56.7.30
195.34.56.7.38
195.34.56.7.55
195.34.56.7.17
Which of the following statements are true of 190.88.122.45/19? (Choose three.)
The first valid address of the subnet is 190.88.96.1.
The network is subnetted.
The broadcast address of the subnet is 190.88.127.255
The last valid address of the subnet is 190.88.255.254.
The last valid address of the subnet is 190.88.96.254.
Which of the following subnet masks would you typically use on a WAN interface to make the best use of address space?
255.255.255.224
255.255.255.192
255.255.255.252
255.255.255.248
Which IP feature allows you to use different subnet masks on different subnets within the network?
IP Subnet Zero
RIPv1
VLSM
RIPv2
You are connecting two of your office locations together over a WAN link. Each office has a router with an IP address assigned. What should your subnet mask be in order to leverage the best use of address space?
255.255.255.0
255.255.255.192
255.255.255.224
255.255.255.252
Which of the following represents a purpose for the serial port on a Cisco router?
To connect to the LAN
To connect the console port
To connect to the WAN
To connect a modem
Which of the following port identifiers are used to reference a Fast Ethernet port? (Select two.)
s0/0
f0/0
con 0
aux 0
fa0/0
What type of cable is used to connect to the console port?
Crossover
Straight-through
Null modem
Rollover
Your manager notices an AUX port on the back of the Cisco router and asks what it is used for. How would you reply?
To connect a CSU/DSU
To connect an external Ethernet interface
To connect an internal Ethernet interface
To connect a modem
You are performing a security audit on the network devices and have verified that the console port has a password configured. What other port should you verify has a password?
FastEthernet0/0
FastEthernet0/1
AUX
Serial0/0/0
You are configuring the DCE end of a point-to-point serial link between two routers. What extra command is typed on the DCE end of the link?
clock rate 64000
encapsulation hdlc
ip address w.x.y.z
no shutdown
The external CSU/DSU connects to which port on the router?
FastEthernet0/0
Con 0
Aux 0
Serial0/0/0
What type of module can be purchased to install an internal CSU/DSU into the router?
WNA
WCI
WIC
WAC
Where is the running configuration stored?
NVRAM
VRAM
ROM
Flash
Which of the following are stored in ROM on the Cisco device?
Startup config
POST
Bootstrap
IOS
ROMMON
Which commands can you use to save the running configuration to the startup configuration? (Select two.)
copy startup-config running-config
save running-config startup-config
save running-config
copy running-config startup-config
write
When the Cisco router starts up, where does it find the Cisco IOS?
NVRAM
RAM
ROM
Flash
When you first boot up the Cisco router, where does it locate the startup configuration
NVRAM
RAM
ROM
Flash
You are connected to your switch and wish to remotely administer the Cisco router. Which com-mand would you use?
telnet
enable
connect
rdp
You are at the global configuration prompt and wish to configure a communication protocol for remote access to the router. What command would you type?
line vty 0 4
line ssh 0
line telnet 0 4
line telnet 0
What command would you use to navigate from priv exec mode to user exec mode?
disable
shutdown
enable
exit
You wish to get help on which parameters exist on the ping command. How would you get a list of parameters?
help ping
ping ?
? ping
?? ping
What is the command to move to priv exec mode from user exec?
router>enable
router#enable
router(config)#enable
router#disable
Which of the following prompts represents global configuration mode?
router#
router(config)#
router>
router(global)#
What is the default router name if a name is not assigned to the router during initial configuration?
R1
switch
router
default
What command would you use to navigate to global configuration mode?
>config terminal
#setup
>enable
#config terminal
What types of actions can an administrator perform at this IOS prompt? (Select two.)
R1(config-if)#
Show running-config
Disable the interface
Show the IOS version
Change the hostname
Assign an IP address
You wish to run the initial configuration dialog. What command would you use?
install
dialog
setup
initdialog
Under what conditions would the initial configuration dialog appear?
When there is no running-config
When there is no startup-config
When you type initdialog
When you type setup
You have connected a computer to the console port of a brand new router. What will the router display on the screen after it is powered on?
router>
POST errors
The option to enter initial configuration
router#
What is the purpose of the POST?
Locate the IOS in flash memory.
Locate the IOS in ROM.
Verify that hardware is functioning.
Apply the startup configuration.
You have rebooted your Cisco switch and it displays an amber light on the system LED during POST. What does this indicate?
A failure during POST
System booted without fault
A successful POST
Failed communication with router
