CISCO CCNA Exam A+ Pass
What will Router1 do when it receives the data frame shown? (Choose three.) - Answer
✔✔- A. Router1 will strip off the source MAC address and replace it with the MAC
address 0000.0c36.6965
C. Router1 will strip off the destination MAC address and replace it with the MAC
address 0000.0c07.4320.
F. Router1 will forward the data packet out interface FastEthernet0/2.
Which three statements correctly describe Network Device A? (Choose three.) - Answer
✔✔- B. With a network wide mask of 255.255.255.128, each interface does require an
IP address on a unique IP subnet.
D. With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to
communicate with each other.
E. With a network wide mask of 255.255.254.0, each interface does not require an IP
address.
Which layer in the OSI reference model is responsible for determining the availability of
the receiving program and checking to see if enough resources exist for that
communication? - Answer ✔✔- E. application
Which of the following describes the roles of devices in a WAN? (Choose three.) -
Answer ✔✔- A. A CSU/DSU terminates a digital local loop.
D. A modem terminates an analog local loop.
E. A router is commonly considered a DTE device.
Host A pings interface S0/0 on router 3. What is the TTL value for that ping? - Answer
✔✔- B. 253
A network administrator is verifying the configuration of a newly installed host by
establishing an FTP connection to a remote server. What is the highest layer of the
protocol stack that the network administrator is using for this operation? - Answer ✔✔-
A. application
After HostA pings HostB, which entry will be in the ARP cache of HostA to support this
transmission? - Answer ✔✔- A.
A network interface port has collision detection and carrier sensing enabled on a shared
twisted pair network. From this statement, what is known about the network interface
port? - Answer ✔✔- C. This is an Ethernet port operating at half duplex.
A receiving host computes the checksum on a frame and determines that the frame is
damaged. The frame is then discarded. At which OSI layer did this happen? - Answer
✔✔- D. data link
,Which of the following correctly describe steps in the OSI data encapsulation process?
(Choose two.) - Answer ✔✔- A. The transport layer divides a data stream into segments
and may add reliability and flow control information.
D. Packets are created when the network layer adds Layer 3 addresses and control
information to a segment.
Host A is communicating with the server. What will be the source MAC address of the
frames received by Host A from the server - Answer ✔✔- A. the MAC address of router
interface e0
What two results would occur if the hub were to be replaced with a switch that is
configured with one Ethernet VLAN? (Choose two.) - Answer ✔✔- C. The number of
collision domains would increase.
D. The number of broadcast domains would remain the same.
Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.)
- Answer ✔✔- B. Establishing VLANs increases the number of broadcast domains.
D. Microsegmentation decreases the number of collisions on the network.
E. In a properly functioning network with redundant switched paths, each switched
segment will contain one root bridge with all its ports in the forwarding state. All other
switches in that broadcast domain will have only one root port.
Where does routing occur within the DoD TCP/IP reference model? - Answer ✔✔- B.
internet
Which destination addresses will be used by Host A to send data to Host C? (Choose
two.) - Answer ✔✔- C. the IP address of Host C
F. the MAC address of the router's E0 interface
For what two purposes does the Ethernet protocol use physical addresses? (Choose
two.) - Answer ✔✔- A. to uniquely identify devices at Layer 2
E. to allow communication between different devices on the same network
Based on the information given, which switch will be elected root bridge and why? -
Answer ✔✔- E. Switch C, because it has the lowest priority
Which of the following statements describe the network shown in the graphic? (Choose
two.) - Answer ✔✔- A. There are two broadcast domains in the network.
F. There are seven collision domains in the network.
In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)
- Answer ✔✔- C. when they detect no other devices are sending
D. when the medium is idle
, A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the
local network. How can you accomplish this task, using the fewest physical interfaces
and without decreasing network performance? - Answer ✔✔- D. Implement a router-on-
a-stick configuration.
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.
Which of the following are true? (Choose two.) - Answer ✔✔- A. Router C will use ICMP
to inform Host 1 that Host 2 cannot be reached.
D. Router C will send a Destination Unreachable message type.
What is the difference between a CSU/DSU and a modem? - Answer ✔✔- D. A
CSU/DSU converts digital signals from a router to a leased line; a modem converts
digital signals from a router to a phone line.
DRAG & DROP (3 options) - Answer ✔✔- Straight through, Crossover, Rollerover
DRAG AND DROP (6 options) - Answer ✔✔- Packets, IP addresses, routing, UDP,
segments, windowing
drag and drop PC.01 towards router A - Answer ✔✔- MAC 0000.0c89.3333
MAC 0000.0c89.9999
IP 172.16.34.250
IP 172.16.21.7
drag and drop towards router B - Answer ✔✔- MAC 0000.0c89.9999
MAC 0000.0c89.3333
IP 172.16.21.7
IP 172.16.34.250
drag and drop, complete network diagram. - Answer ✔✔- Router
DTE
DCE
CSU/DSU Synchronous
Digital Line
Wan Service Provider Network
Switch port FastEthernet 0/24 on ALSwitch1 will be used to create an IEEE 802.1Q-
compliant trunk to another switch. Based on the output shown, what is the reason the
trunk does not form, even though the proper cabling has been attached? - Answer ✔✔-
C. The port is currently configured for access mode.
Which port state is introduced by Rapid-PVST? - Answer ✔✔- C. discarding
What will Router1 do when it receives the data frame shown? (Choose three.) - Answer
✔✔- A. Router1 will strip off the source MAC address and replace it with the MAC
address 0000.0c36.6965
C. Router1 will strip off the destination MAC address and replace it with the MAC
address 0000.0c07.4320.
F. Router1 will forward the data packet out interface FastEthernet0/2.
Which three statements correctly describe Network Device A? (Choose three.) - Answer
✔✔- B. With a network wide mask of 255.255.255.128, each interface does require an
IP address on a unique IP subnet.
D. With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to
communicate with each other.
E. With a network wide mask of 255.255.254.0, each interface does not require an IP
address.
Which layer in the OSI reference model is responsible for determining the availability of
the receiving program and checking to see if enough resources exist for that
communication? - Answer ✔✔- E. application
Which of the following describes the roles of devices in a WAN? (Choose three.) -
Answer ✔✔- A. A CSU/DSU terminates a digital local loop.
D. A modem terminates an analog local loop.
E. A router is commonly considered a DTE device.
Host A pings interface S0/0 on router 3. What is the TTL value for that ping? - Answer
✔✔- B. 253
A network administrator is verifying the configuration of a newly installed host by
establishing an FTP connection to a remote server. What is the highest layer of the
protocol stack that the network administrator is using for this operation? - Answer ✔✔-
A. application
After HostA pings HostB, which entry will be in the ARP cache of HostA to support this
transmission? - Answer ✔✔- A.
A network interface port has collision detection and carrier sensing enabled on a shared
twisted pair network. From this statement, what is known about the network interface
port? - Answer ✔✔- C. This is an Ethernet port operating at half duplex.
A receiving host computes the checksum on a frame and determines that the frame is
damaged. The frame is then discarded. At which OSI layer did this happen? - Answer
✔✔- D. data link
,Which of the following correctly describe steps in the OSI data encapsulation process?
(Choose two.) - Answer ✔✔- A. The transport layer divides a data stream into segments
and may add reliability and flow control information.
D. Packets are created when the network layer adds Layer 3 addresses and control
information to a segment.
Host A is communicating with the server. What will be the source MAC address of the
frames received by Host A from the server - Answer ✔✔- A. the MAC address of router
interface e0
What two results would occur if the hub were to be replaced with a switch that is
configured with one Ethernet VLAN? (Choose two.) - Answer ✔✔- C. The number of
collision domains would increase.
D. The number of broadcast domains would remain the same.
Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.)
- Answer ✔✔- B. Establishing VLANs increases the number of broadcast domains.
D. Microsegmentation decreases the number of collisions on the network.
E. In a properly functioning network with redundant switched paths, each switched
segment will contain one root bridge with all its ports in the forwarding state. All other
switches in that broadcast domain will have only one root port.
Where does routing occur within the DoD TCP/IP reference model? - Answer ✔✔- B.
internet
Which destination addresses will be used by Host A to send data to Host C? (Choose
two.) - Answer ✔✔- C. the IP address of Host C
F. the MAC address of the router's E0 interface
For what two purposes does the Ethernet protocol use physical addresses? (Choose
two.) - Answer ✔✔- A. to uniquely identify devices at Layer 2
E. to allow communication between different devices on the same network
Based on the information given, which switch will be elected root bridge and why? -
Answer ✔✔- E. Switch C, because it has the lowest priority
Which of the following statements describe the network shown in the graphic? (Choose
two.) - Answer ✔✔- A. There are two broadcast domains in the network.
F. There are seven collision domains in the network.
In an Ethernet network, under what two scenarios can devices transmit? (Choose two.)
- Answer ✔✔- C. when they detect no other devices are sending
D. when the medium is idle
, A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the
local network. How can you accomplish this task, using the fewest physical interfaces
and without decreasing network performance? - Answer ✔✔- D. Implement a router-on-
a-stick configuration.
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down.
Which of the following are true? (Choose two.) - Answer ✔✔- A. Router C will use ICMP
to inform Host 1 that Host 2 cannot be reached.
D. Router C will send a Destination Unreachable message type.
What is the difference between a CSU/DSU and a modem? - Answer ✔✔- D. A
CSU/DSU converts digital signals from a router to a leased line; a modem converts
digital signals from a router to a phone line.
DRAG & DROP (3 options) - Answer ✔✔- Straight through, Crossover, Rollerover
DRAG AND DROP (6 options) - Answer ✔✔- Packets, IP addresses, routing, UDP,
segments, windowing
drag and drop PC.01 towards router A - Answer ✔✔- MAC 0000.0c89.3333
MAC 0000.0c89.9999
IP 172.16.34.250
IP 172.16.21.7
drag and drop towards router B - Answer ✔✔- MAC 0000.0c89.9999
MAC 0000.0c89.3333
IP 172.16.21.7
IP 172.16.34.250
drag and drop, complete network diagram. - Answer ✔✔- Router
DTE
DCE
CSU/DSU Synchronous
Digital Line
Wan Service Provider Network
Switch port FastEthernet 0/24 on ALSwitch1 will be used to create an IEEE 802.1Q-
compliant trunk to another switch. Based on the output shown, what is the reason the
trunk does not form, even though the proper cabling has been attached? - Answer ✔✔-
C. The port is currently configured for access mode.
Which port state is introduced by Rapid-PVST? - Answer ✔✔- C. discarding
