Chapter2
. Which statements correctly identify the role of intermediary devices in the network? (Choose three.)
determine pathways for data.
retime and retransmit data signals.
manage data flows.
2. Select the statements that are correct concerning network protocols. (Choose three.)
define the structure of layer specific PDU's.
outline the functions necessary for communications between layers.
require layer dependent encapsulations.
3. What are the key functions of encapsulation? (Choose three.)
allows modification of the original data before transmission.
identifies pieces of data as part of the same communication.
ensures that data pieces can be directed to the correct receiving end device.
enables the reassembly of complete messages.
4. Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)
Physical.
Data Link.
5. What is a PDU?
a layer specific encapsulation.
6. Which characteristic correctly refers to end devices in a network?
originate data flow.
7. Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" at IP address 172.16.1.103. Based upon the graphic, which device type best describes the function of wireless device "Cell A?"
an end device
8. Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)
Network B -- WAN
Network C -- LAN
Network A -- LAN
9. Which three statements best describe a Local Area Network (LAN)? (Choose three.)
A LAN is usually in a single geographical area.
The network is administered by a single organization.
.
A LAN provides network services and access to applications for users within a common organization.
10. Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?
multiplexing
11. What is the primary purpose of Layer 4 port assignment?
to identify the processes or services that are communicating within the end devices
12. What device is considered an intermediary device?
switch
13. Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?
intermediary
14. Refer to the exhibit. What type of network is shown?
LAN
15. Which layer encapsulates the segment into packets?
network
16. What can be identified by examining the network layer header?
the destination host address
17. Refer to the exhibit. Which set of devices contains only end devices?
E, F, H, I, J
18. During the encapsulation process, what occurs at the data link layer?
The physical address is added.
19. What is the purpose of the TCP/IP Network Access layer?
detailing the components that make up the physical link and how to access it
20. What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?
application, presentation, session, transport, network, data link, physical
ChPTER 4
1. Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
This contains a Telnet request.
This is a TCP header.
2. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
0 to 1023
3. Why are port numbers included in the TCP header of a segment?
to enable a receiving host to forward the data to the appropriate application
4. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?
transport
5. Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data.
*reach a timeout and resend the data that needs to be acknowledged
6. Why is flow control used for TCP data transfer?
to prevent the receiver from being overwhelmed by incoming data
7. Which two options represent Layer 4 addressing? (Choose two.)
identifies the communicating applications
identifies multiple conversations between the hosts
8. Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?
session establishment
9. Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)
A termination request has been sent to 192.135.250.10.
Communication with 64.100.173.42 is using HTTP Secure.
10. What is dynamically selected by the source host when forwarding data?
source port
11. What are two features of the User Datagram Protocol (UDP)? (Choose two.)
flow control
low overhead
12. What mechanism is used by TCP to provide flow control as segments travel from source to destination?
window size
13. Which transport layer protocol provides low overhead and would
UDP
14. Which information is found in both the TCP and UDP header information?
source and destination
15. Which three features allow TCP to reliably and accurately track
flow control
session establishment
numbering and sequencing
16. During a TCP communication session, if the packets arrive to the
The packets will be delivered and reassembled at the destination.
17. Which is an important characteristic of UDP?
minimal delays in data delivery
18. After a web browser makes a request to a web server that is
80
19. Which event occurs during the transport layer three-way handshake?
TCP initializes the sequence numbers for the sessions.
Chapter 5
1. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a
destination network address
2. What information is added during encapsulation at OSI Layer 3?
source and destination IP address
3. In a connectionless system, which of the following is correct?
The destination is not contacted before a packet is sent.
4. Which IP packet field will prevent endless loops?
time-to-live
5. Which portion of the network layer address does a router use to forward packets?
network portion
6. Refer to the exhibit. Using the network in the exhibit, what would be the default
192.133.219.1
7. If the default gateway is configured incorrectly on the host, what is
*The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
8. What is the purpose of a default gateway?
*identifies the device that allows local network computers to communicate with devices on other networks
9. What type of routing uses information that is manually entered into the routing table?
static
10. When the destination network is not listed in the routing table of a Cisco router, what are two possible actions
*The router discards the packet.
*The router forwards the packet out the interface indicated by the default route entry.
11. What are the key factors to consider when grouping hosts into common network? (Choose three.)
purpose
software version
geographic location
12. What is a component of a routing table entry?
the next-hop address
13. Which intermediary devices could be used to implement security between networks? (Choose two.)
router
firewall
14. What are three common problems with a large network? (Choose three.)
performance degradation
security issues
host identification
15. Refer to the exhibit. All devices shown in the exhibit have factory default settings. How many broadcast domains are represented in the topology that is shown?
*4
16. Which three statements are true about routes and their use? (Choose three.)
*If the destination network is directly connected, the router forwards the packet to the destination host.
*If no route exists for the destination network and a default route is present, the packet is forwarded to the next-hop router.
*If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route.
17. Refer to the exhibit. A network administrator is troubleshooting a connectivity problem and needs to determine the address that is used to forward network packets out the network.
10.10.10.6
18. Refer to the exhibit. A network administrator notices that there are too many broadcasts on the network. What two steps can the network
Replace S2 with a router.
Subnet the 192.168.0.0 /24 network.
19. Refer to the exhibit. The network in the exhibit is fully operational. What two statements correctly describe the routing for the topology that is shown? (Choose two.)
*192.168.0.2 is the next-hop address that is used by R3 to route a packet from the 10.0.0.0 network to the 172.16.0.0 network.
*192.168.0.1 is the next-hop address that is used by R2 to route a packet from the 172.16.0.0 network to the 192.168.12.0 network.
20. What two characteristics are commonly associated with dynamic routing protocols? (Choose two.)
provide routers with up-to-date routing tables
consume bandwidth to exchange route information
21. What statement describes the purpose of a default route?
*A host uses a default route to transfer data to a host outside the local network when no other route to the destination exists.
Chapter10
1. Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)
*connecting two routers together via their fast ethernet ports
*connecting two devices with the same interface type at Fast Ethernet speeds
2. Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
console interface
3. What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
greater distances per cable run
limited susceptibility to EMI/RFI
greater bandwidth potential
4. A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?
UTP
5. What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases
6. How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?
2046
7. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
255.255.255.0
8. A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?
255.255.255.224
9. What type of network cable is used between a terminal and a console port?
rollover
10. Which device is used to create or divide broadcast domains?
router
11. Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?
5//192.168.3.54
12. Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?
host B would be successful, host A would fail
13. Which three types of connectors are commonly associated with Cisco's V.35 serial cables? (Choose three.)
DB 60
Winchester 15 pin
smart serial
14. Refer to the exhibit. How many subnets are required to support the network that is shown?
3
15. What are three common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose three.)
*direct configuration of the device
*the enabling of the mechanism to electrically swap the transmit and receive pairs
*the automatic detection and negotiating of MDI/MDIX operation of the port
16. Which three statements are true about the role of routers in the network? (Choose three.)
They segment broadcast domains.
They interconnect different network technologies.
Each router interface requires a separate network or subnet.
17. Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?
hub
18. Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?
1
19. Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)
Hosts B and C are in the same subnet.
Five broadcast domains are present.
Host B is using a crossover cable to connect to the router.
Five networks are shown.
20. To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?
rollover cable
21. Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)
*Segment 1 uses a patch cable.
*Segment 3 uses horizontal cabling.
*Segment 4 uses vertical cabling.
22. Refer to the exhibit. A network technician has been allocated the 192.168.1.0/24 private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?
255.255.255.224
Chapter11
1. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show interfaces
2. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable secret 5(last) $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password 7 14141E0A1F17line console 0password 7 020507550A
3. Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?
RouterB(config)# enable secret class
RouterB(config)# line vty 0 4
RouterB(config-if)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0 2
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
RouterB(config)# enable secret class
RouterB(config)# line vty 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-line)# password cisco
RouterB(config-line)# login
RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-vty)# password cisco
RouterB(config-vty)# login
4. Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP assigned to the serial port on Router B
5. What command is used to change the default router name to Fontana?
Router(config)# hostname Fontana
6. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2
7. Refer to the exhibit. What additional command is required to allow remote access to this switch?
3NA-SW1(config)# ip default-gateway address
8. When network services fail, which port is most often used to access a router for management purposes?
Console
9. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?
SSH
10. In a Cisco router, when do changes made to the running-configuration take effect?
2as the commands are entered
11. Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)
privileged executive mode
enable mode
12. Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)
hot keys
context-sensitive
command override
13. Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?
Ctrl-Shift-6
14. Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?
2UBAMA(config)# line vty 0 4
15. On a Cisco router, which interface would be used to make the initial configuration?
Console Port
16. Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)
3The S0/0/1 IP address of Dallas is improperly configured.
5The clock rate is missing on the serial link between Dallas and NYC
