Introduction to Networks Final Exam Study Guide
Which domain name would be an example of a top-level domain? www.cisco.com cisco.com .com root.cisco.com
.com
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)
10.0.0.0/8 172.16.0.0/12 192.168.0.0/16
Which subnet would include the address 192.168.1.96 as a usable host address? 192.168.1.64/26 192.168.1.32/27 192.168.1.32/28 192.168.1.64/29
192.168.1.64/26
Refer to the exhibit. Consider the IP address of 192.168.10.0/24 that has been assigned to a high school building. The largest network in this building has 100 devices. If 192.168.10.0 is the network number for the largest network, what would be the network number for the next largest network, which has 40 devices? ITN Final Exam Form B Answers 004
192.168.10.128
A user is unable to reach the web site when typing http://www.cisco.com in a web browser, but can reach the same site by typing http://72.163.4.161. What is the issue?
DNS Dynamic Name System
Which two protocols operate at the highest layer of the TCP/IP protocol stack? (Choose two.)
DNS POP
A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
DSL
What are three characteristics of an SVI? (Choose three.)
It is not associated with any physical interface on a switch. It provides a means to remotely manage a switch. It is associated with VLAN1 by default.
What is a characteristic of the LLC sublayer?
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
A technician configures a switch with these commands: SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdown What is the technician configuring?
SVI
Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?
Segments are sent from the transport layer to the internet layer.
What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server? TCP IP HTTP Ethernet
TCP
Refer to the exhibit. What will be the result of entering this configuration the next time a network administrator connects a console cable to the router and no additional commands have been entered? ITN Final Exam Form A Answers 003 The administrator will be required to enter Cisco123. The administrator will be required to enter Cisco234. The administrator will be required to enter Cisco789. The administrator will be presented with the R1> prompt.
The administrator will be presented with the R1> prompt.
If a device receives an Ethernet frame of 60 bytes, what will it do?
drop the frame
What are two services provided by the OSI network layer? (Choose two.)
encapsulating PDUs from the transport layer
Which switching method has the lowest level of latency?
fast-forward
What are two examples of the cut-through switching method? (Choose two.)
fast-forward switching fragment-free switching
What layer is responsible for routing messages through an internetwork in the TCP/IP model?
internet
A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?
WAN
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to interrupt the ping process
What is the purpose of having a converged network?
to reduce the cost of deploying and maintaining the communication infrastructure
What is a benefit of using cloud computing in networking?
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.
A wireless host needs to request an IP address. What protocol would be used to process the request?
DHCP Dynamic Host Configuration Protocol
Which three addresses are valid public addresses? (Choose three.) 198.133.219.17 192.168.1.245 10.15.250.5 128.107.12.117 192.15.301.240 64.104.78.227
198.133.219.17 128.107.12.117 64.104.78.227
What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?
2001:0:0:abcd::1
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011?
203.0.113.211
A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits? 255.255.255.0 255.255.255.128 255.255.255.224 255.255.255.240
255.255.255.128
How many hosts are addressable on a network that has a mask of 255.255.255.248?
6
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?
62
Refer to the exhibit. An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?
A router along the path did not have a route to the destination.
What are three characteristics of multicast transmission? (Choose three.) The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255. A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255. Computers use multicast transmission to request IPv4 addresses. Multicast messages map lower layer addresses to upper layer addresses.
A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255.
What method is used to manage contention-based access on a wireless network? CSMA/CD priority ordering CSMA/CA token passing
CSMA/CA
Which range of link-local addresses can be assigned to an IPv6-enabled interface? FEC0::/10 FDEE::/7 FE80::/10 FF00::/8
FE80::/10
What are two benefits of using a layered network model? (Choose two.)
It assists in protocol design. It prevents technology in one layer from affecting other layers
What function does pressing the Tab key have when entering a command in IOS?
It completes the remainder of a partially typed word in a command.
What purpose does NAT64 serve in IPv6?
It converts IPv6 packets into IPv4 packets.
What is an advantage to using a protocol that is defined by an open standard?
It encourages competition and promotes choices.
What is the function of the shell in an OS?
It interfaces between the users and the kernel.
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
It will discard the frame.
What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network?
MAC address
After several configuration changes are made to a router, the copy running-configuration startup-configuration command is issued. Where will the changes be stored?
NVRAM non-volatile random access memory
A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?
The command is being entered from the wrong mode of operation. should be config-if
Refer to the exhibit. From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command banner motd V Authorized access only! Violators will be prosecuted! V When users log in using Telnet, the banner does not appear correctly. What is the problem? ITN Final Exam Form B Answers 001 The banner message is too long. The delimiting character appears in the banner message. The symbol "!" signals the end of a banner message. Message-of-the-day banners will only appear when a user logs in through the console port.
The delimiting character appears in the banner message.
Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)
The frame has the broadcast address as the destination address. The destination address is unknown to the switch.
After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?
The new configuration will be loaded if the switch is restarted.
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
The physical address is added.
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely? FastEthernet0/1 VLAN 1 vty 0 console 0
VLAN 1
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.) ITN Final Exam Form B Answers 007 There is connectivity between this device and the device at 192.168.100.1. The connectivity between these two hosts allows for videoconferencing calls. There are 4 hops between this device and the device at 192.168.100.1. The average transmission time between the two hosts is 2 milliseconds. This host does not have a default gateway configured.
There is connectivity b/w this device and the device at 192.168.100.1. There are 4 hops between this device and the device at 192.168.100.1.
What are two characteristics of Ethernet MAC addresses? (Choose two.)
They are globally unique. They are expressed as 12 hexadecimal digits.
What is a characteristic of multicast messages?
They are sent to a select group of hosts.
Which three statements characterize UDP? (Choose three.)
UDP provides basic connectionless transport layer functions. UDP relies on application layer protocols for error detection. UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms.
What is a characteristic of a fault tolerant network?
a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
What are two characteristics of fiber-optic cable? (Choose two.) a. It is not affected by EMI or RFI. b. Each pair of cables is wrapped in metallic foil. c. It combines the technique of cancellation, shielding, and twisting to protect data. d. It typically contains 4 pairs of fiber-optic wires. e. It is more expensive than UTP cabling is.
a. It is not affected by EMI or RFI. e. It is more expensive than UTP cabling is.
A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.) a. the amount of traffic that is currently crossing the network b. the sophistication of the encapsulation method applied to the data c. the type of traffic that is crossing the network d. the latency that is created by the number of network devices that the data is crossing e. the bandwidth of the WAN connection to the Internet f. the reliability of the gigabit Ethernet infrastructure of the backbone
a. the amount of traffic that is currently crossing the network c. the type of traffic that is crossing the network d. the latency that is created by the number of network devices that the data is crossing
What are two ways that TCP uses the sequence numbers in a segment? (Choose two.) a. to identify missing segments at the destination b. to reassemble the segments at the remote location c. to specify the order in which the segments travel from source to destination d. to limit the number of segments that can be sent out of an interface at one time e. to determine if the packet changed during transit
a. to identify missing segments at the destination b. to reassemble the segments at the remote location
Which connection provides a secure CLI session with encryption to a Cisco switch?
an SSH connection Secure Shell
Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
audio conference, financial transactions, web page
Which statement is true about variable-length subnet masking? a. Each subnet is the same size. b. The size of each subnet may be different, depending on requirements. c. Subnets may only be subnetted one additional time. d. Bits are returned, rather than borrowed, to create additional subnets.
b. The size of each subnet may be different, depending on requirements.
What type of IPv6 address is FE80::1? a. loopback b. link-local
b. link-local
How does quality of service help a network support a wide range of applications and services?
by providing mechanisms to manage congested network traffic
Which scenario describes a function provided by the transport layer? a. 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. b. A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header. c. 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. d. 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.
c. 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.
What information is added during encapsulation at OSI Layer 3?
source and destination IP address
A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration?
c. The address is returned to the pool for reuse when the lease expires.
What are two functions of NVRAM? (Choose two.) a. to store the routing table b. to retain contents when power is removed c. to store the startup configuration file d. to contain the running configuration file e. to store the ARP table
c. to store the startup configuration file a. to store the routing table
What is a characteristic of UTP cabling?
cancellation
Which two roles can a computer assume in a peer-to-peer network where a file is being shared between two computers? (Choose two.)
client server
Which two tasks are functions of the presentation layer? (Choose two.) compression addressing encryption session control authentication
compression encryption
Where are Cisco IOS debug output messages sent by default?
console line
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.) error correction through a collision detection method session control using port numbers data link layer addressing placement and removal of frames from the media detection of errors through CRC calculations delimiting groups of bits into frames conversion of bits into data signals
data link layer addressing detection of errors through CRC calculations delimiting groups of bits into frames
Refer to the exhibit. The network administrator for a small advertising company has chosen to use the 192.168.5.96/27 network for internal LAN addressing. As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations. Which component is incorrectly configured? ITN Final Exam Form B Answers 006
default gateway address
What addresses are mapped by ARP?
destination MAC address to a destination IPv4 address
What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?
destination and source port numbers
A medium-sized business is researching available options for connecting to the Internet. The company is looking for a high speed option with dedicated, symmetric access. Which connection type should the company choose?
leased line
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode? ITN Final Exam Form A Answers 002 letmein secretin lineconin linevtyin
lineconin
When applied to a router, which command would help mitigate brute-force password attacks against the router? exec-timeout 30 service password-encryption banner motd $Max failed logins = 5$ login block-for 60 attempts 5 within 60
login block-for 60 attempts 5 within 60
Which example of malicious code would be classified as a Trojan horse?
malware that was written to look like a video game
Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)
network transport
A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?
nslookup
When planning for network growth, where in the network should packet captures take place to assess network traffic?
on as many different network segments as possible
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites? mesh partial mesh hub and spoke point-to-point
partial mesh
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?
physical layer
What is a key characteristic of the peer-to-peer networking model?
resource sharing without a dedicated server
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
route print netstat -r
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?
scalability
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode? letmein secretin lineconin linevtyin
secretin
Which name is assigned to the transport layer PDU?
segment Explanation: Data - The general term for the PDU used at the application layer. Segment - transport layer PDU Packet - network layer PDU Frame - data link layer PDU Bits - A physical layer PDU used when physically transmitting data over the medium
What is the process of dividing a data stream into smaller pieces before transmission?
segmentation
A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port?
show interfaces
What is the TCP mechanism used in congestion avoidance?
sliding window
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
store-and-forward switching
Which type of UTP cable is used to connect a PC to a switch port?
straight-through
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?
subnet mask
What source IP address does a router use by default when the traceroute command is issued?
the IP address of the outbound interface
A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply?
the destination port number
In computer communication, what is the purpose of message encoding?
to convert information to the appropriate form for transmission
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?
to identify the network address of the destination network
What is the function of the HTTP GET message?
to request an HTML page from a web server
Which procedure is used to reduce the effect of crosstalk in copper cables?
twisting opposing circuit wire pairs together
What are two actions performed by a Cisco switch? (Choose two.)
using the source MAC addresses of frames to build and maintain a MAC address table utilizing the MAC address table to forward frames via the destination MAC address
In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)
when a faster delivery mechanism is needed when applications do not need to guarantee delivery of the data
