WorksheetsCisco quiz2
Total questions: 70
Worksheet time: 40mins
Users report that the network access is slow. After questioning the employees, the network administrator learned that one employee downloaded a third-party scanning program for the printer. What type of malware might be introduced that causes slow performance of the network?
virus
worm
phishing
spam
A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet?
when the router receives an ICMP Time Exceeded message
when the RTT value reaches zero
when the host responds with an ICMP Echo Reply message
when the value in the TTL field reaches zero
when the values of both the Echo Request and Echo Reply messages reach zero
A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.)
Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires
Fiber optic cabling requires specific grounding to be immune to EMI.
Fiber optic cabling is susceptible to loss of signal due to RFI.
Fiber optic cable is able to withstand rough handling.
Fiber optic provides higher data capacity but is more expensive than copper cabling.
Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?
Header Length
Differentiated Services
Time-to-Live
Fragment Offset
A user is complaining that an external web page is taking longer than normal to load.The web page does eventually load on the user machine. Which tool should the technician use with administrator privileges in order to locate where the issue is in the network?
ping
nslookup
tracert
ipconfig/displaydns
What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)
IP addresses
interface descriptions
MAC addresses
next-hop addresses
Layer 1 statuses
A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices:
Subnetwork A: IP phones – 10 addresses
Subnetwork B: PCs – 8 addresses
Subnetwork C: Printers – 2 addresses
What single subnet mask would be appropriate to use for the three subnetworks?
255.255.255.0
255.255.255.240
255.255.255.248
255.255.255.252
Refer to the exhibit. A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit?
255.255.255.192
255.255.255.0
255.255.255.128
255.255.255.240
255.255.255.224
Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)
The source port field identifies the running application or service that will handle data returning to the PC.
The TCP process running on the PC randomly selects the destination port when establishing a session with the server.
UDP segments are encapsulated within IP packets for transport across the network.
The UDP destination port number identifies the application or service on the server which will handle the data.
TCP is the preferred protocol when a function requires lower network overhead.
What is an advantage to using a protocol that is defined by an open standard?
A company can monopolize the market.
The protocol can only be run on equipment from a specific vendor
An open standard protocol is not controlled or regulated by standards organizations
It encourages competition and promotes choices
A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination?
the network domain of the destination host
the IP address of the default gateway
the MAC address of the destination host
the MAC address of the default gateway
Why would a Layer 2 switch need an IP address?
to enable the switch to send broadcast frames to attached PCs
to enable the switch to function as a default gateway
to enable the switch to be managed remotely
to enable the switch to receive frames from attached PCs
What characteristic describes a VPN?
software on a router that filters traffic based on IP addresses or applications
software that identifies fast-spreading threats
a tunneling protocol that provides remote users with secure access into the network of an organization
a network device that filters access and traffic coming into a network
Which two statements describe features of an IPv4 routing table on a router? (Choose two.)
Directly connected interfaces will have two route source codes in the routing table: C and S
If there are two or more possible routes to the same destination, the route associated with the higher metric value is included in the routing table
The routing table lists the MAC addresses of each active interface
It stores information about routes derived from the active router interfaces
If a default static route is configured in the router, an entry will be included in the routing table with source code S
What are two functions that are provided by the network layer? (Choose two.)
directing data packets to destination hosts on other networks
placing data on the network medium
carrying data between processes that are running on source and destination hosts
providing dedicated end-to-end connections
providing end devices with a unique network identifier
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
netstat -s
route print
show ip route
netstat -r
tracert
Which information does the show startup-config command display?
the IOS image copied into RAM
the bootstrap program in the ROM
the contents of the current running configuration file in the RAM
the contents of the saved configuration file in the NVRAM
What are three characteristics of the CSMA/CD process? (Choose three.)
The device with the electronic token is the only one that can transmit after a collision
A device listens and waits until the media is not busy before transmitting
After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired
All of the devices on a segment see data that passes on the network medium
A jam signal indicates that the collision has cleared and the media is not busy
What is one main characteristic of the data link layer?
It generates the electrical or optical signals that represent the 1 and 0 on the media
It converts a stream of data bits into a predefined code
It shields the upper layer protocol from being aware of the physical medium to be used in the communication
It accepts Layer 3 packets and decides the path by which to forward the packet to a remote network
Which two statements are correct about MAC and IP addresses during data transmission if NAT is not involved? (Choose two.)
Destination IP addresses in a packet header remain constant along the entire path to a target host
Destination MAC addresses will never change in a frame that goes across seven routers
Every time a frame is encapsulated with a new destination MAC address, a new destination IP address is needed
Destination and source MAC addresses have local significance and change every time a frame goes from one LAN to another
A packet that has crossed four routers has changed the destination IP address four times
What is a benefit of using cloud computing in networking?
Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software
End users have the freedom to use personal tools to access information and communicate across a business network
Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
DD:DD:DD:DD:DD:DD
172.168.10.99
AA:AA:AA:AA:AA:AA
172.168.10.65
BB:BB:BB:BB:BB:BB
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
255.255.255.0
255.255.255.240
255.255.255.128
255.255.255.192
255.255.255.224
An organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?
256
512
1024
4096
Two pings were issued from a host on a local network. The first ping was issued to the IP address of the default gateway of the host and it failed. The second ping was issued to the IP address of a host outside the local network and it was successful. What is a possible cause for the failed ping?
The default gateway is not operational
The default gateway device is configured with the wrong IP address
Security rules are applied to the default gateway device, preventing it from processing ping requests
The TCP/IP stack on the default gateway is not working properly
A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?
It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server
It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address
It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use
It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network
What two ICMPv6 message types must be permitted through IPv6 access control lists to allow resolution of Layer 3 addresses to Layer 2 MAC addresses? (Choose two.)
neighbor solicitations
echo requests
neighbor advertisements
echo replies
router advertisements
Which wireless technology has low-power and low-data rate requirements making it popular in IoT environments?
Bluetooth
Zigbee
WiMAX
Wi-Fi
Refer to the exhibit. The switches have a default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for the default gateway. Which network devices will receive the ARP request sent by host A?
only host D
only hosts A, B, C, and D
only hosts B and C
only hosts B, C, and router R1
only hosts A, B, and C
What service is provided by DHCP?
An application that allows real-time chatting among remote users
Allows remote access to network devices and servers
Dynamically assigns IP addresses to end and intermediary devices
Uses encryption to provide secure remote access to network devices and servers
What characteristic describes an IPS?
a tunneling protocol that provides remote users with secure access into the network of an organization
a network device that filters access and traffic coming into a network
software that identifies fast-spreading threats
software on a router that filters traffic based on IP addresses or applications
A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?
ssh
SMB/CIFS
HTTPS
SLP
Refer to the exhibit. A network engineer has been given the network address of 192.168.99.0 and a subnet mask of 255.255.255.192 to subnet across the four networks shown. How many total host addresses are unused across all four subnets?
88
200
72
224
158
Refer to the exhibit. The switches are in their default configuration. Host A needs to communicate with host D, but host A does not have the MAC address for its default gateway. Which network hosts will receive the ARP request sent by host A?
only router R1
only hosts A, B, and C
only hosts A, B, C, and D
only hosts B and C
only hosts B, C, and router R1
Refer to the exhibit. The network administrator has assigned the LAN of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 prefix. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the properties of the workgroup server to allow connectivity to the Internet?
IP address: 192.168.10.65 subnet mask: 255.255.255.240, default gateway: 192.168.10.76
IP address: 192.168.10.38 subnet mask: 255.255.255.240, default gateway: 192.168.10.33
IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33
IP address: 192.168.10.41 subnet mask: 255.255.255.248, default gateway: 192.168.10.46
IP address: 192.168.10.254 subnet mask: 255.255.255.0, default gateway: 192.168.10.1
What technique is used with UTP cable to help protect against signal interference from crosstalk?
wrapping a foil shield around the wire pairs
twisting the wires together into pairs
terminating the cable with special grounded connectors
encasing the cables within a flexible plastic sheath
A network administrator is adding a new LAN to a branch office. The new LAN must support 10 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255.255.192
255.255.255.248
255.255.255.224
255.255.255.240
What attribute of a NIC would place it at the data link layer of the OSI model?
attached Ethernet cable
IP address
MAC address
RJ-45 port
TCP/IP protocol stack
A client packet is received by a server. The packet has a destination port number of 21. What service is the client requesting?
FTP
LDAP
SLP
SNMP
Refer to the exhibit. Which two network addresses can be assigned to the network containing 10 hosts? Your answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.)
10.18.10.200/28
10.18.10.208/28
10.18.10.240/27
10.18.10.224/27
10.18.10.224/28
What are two characteristics shared by TCP and UDP? (Choose two.)
default window size
connectionless communication
port numbering
ability to to carry digitized voice
use of checksum
A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting?
IMAP
FTP
SSH
Telnet
Refer to the exhibit. What is wrong with the displayed termination?
The woven copper braid should not have been removed
The wrong type of connector is being used
The untwisted length of each wire is too long
The wires are too thick for the connector that is used
What are three commonly followed standards for constructing and installing cabling? (Choose three.)
cable lengths
connector color
pinouts
connector types
tensile strength of plastic insulator
A network administrator is adding a new LAN to a branch office. The new LAN must support 200 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255.255.240
255.255.255.0
255.255.255.248
255.255.255.224
What characteristic describes identity theft?
the use of stolen credentials to access private data
software on a router that filters traffic based on IP addresses or applications
software that identifies fast-spreading threats
a tunneling protocol that provides remote users with secure access into the network of an organization
A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:
IP phones – 22 addresses
PCs – 20 addresses needed
Printers – 2 addresses needed
Scanners – 2 addresses needed
The network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?
255.255.255.192
255.255.255.252
255.255.255.240
255.255.255.248
255.255.255.224
Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
The Source Address field name from IPv4 is kept in IPv6
The Version field from IPv4 is not kept in IPv6
The Destination Address field is new in IPv6.
The Header Checksum field name from IPv4 is kept in IPv6
The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6
How does the service password-encryption command enhance password security on Cisco routers and switches?
It requires encrypted passwords to be used when connecting remotely to a router or switch with Telnet
It encrypts passwords that are stored in router or switch configuration files
It requires that a user type encrypted passwords to gain console access to a router or switch
It encrypts passwords as they are sent across the network
Users are reporting longer delays in authentication and in accessing network resources during certain time periods of the week. What kind of information should network engineers check to find out if this situation is part of a normal network behavior?
syslog records and messages
the network performance baseline
debug output and packet captures
network configuration files
What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?
2001:DA48::/64
2001:DA48:FC5::A4:/64
2001:DA48:FC5:A4::/64
2001::/64
Refer to the exhibit. What three facts can be determined from the viewable output of the show ip interface brief command? (Choose three.)
Two physical interfaces have been configured
The switch can be remotely managed
One device is attached to a physical interface
Two devices are attached to the switch
The default SVI has been configured
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)
error detection
frame delimiting
accessing the media
data encapsulation
logical addressing
When a switch configuration includes a user-defined error threshold on a per-port basis, to which switching method will the switch revert when the error threshold is reached?
cut-through
store-and-forward
fast-forward
fragment-free
What characteristic describes adware?
a network device that filters access and traffic coming into a network
software that is installed on a user device and collects information about the user
the use of stolen credentials to access private data
an attack that slows or crashes a device or network service
What service is provided by BOOTP?
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web
Allows for data transfers between a client and a file server
Legacy application that enables a diskless workstation to discover its own IP address and find a BOOTP server on the network
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web
Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC2. In this scenario, what will happen next?
SW1 will send an ARP reply with the SW1 Fa0/1 MAC address
SW1 will send an ARP reply with the PC2 MAC address
PC2 will send an ARP reply with the PC2 MAC address
RT1 will send an ARP reply with the RT1 Fa0/0 MAC address
RT1 will send an ARP reply with the PC2 MAC address
What would be the interface ID of an IPv6 enabled interface with a MAC address of 1C-6F-65-C2-BD-F8 when the interface ID is generated by using the EUI-64 process?
0C6F:65FF:FEC2:BDF8
1E6F:65FF:FEC2:BDF8
C16F:65FF:FEC2:BDF8
106F:65FF:FEC2:BDF8
Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)
NAT adds authentication capability to IPv4
NAT introduces problems for some applications that require end-to-end connectivity
NAT will impact negatively on switch performance
NAT provides a solution to slow down the IPv4 address depletion
NAT causes routing tables to include more information
A user is attempting to access http://www.cisco.com/ without success. Which two configuration values must be set on the host to allow this access? (Choose two.)
DNS server
source port number
HTTP server
source MAC address
default gateway
What service is provided by FTP?
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web
An application that allows real-time chatting among remote users
Allows for data transfers between a client and a file server
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
FEC0::/10
FDEE::/7
FE80::/10
FF00::/8
Which switching method drops frames that fail the FCS check?
store-and-forward switching
borderless switching
ingress port buffering
cut-through switching
What characteristic describes spyware?
a network device that filters access and traffic coming into a network
software that is installed on a user device and collects information about the user
an attack that slows or crashes a device or network service
the use of stolen credentials to access private data
What is the purpose of the TCP sliding window?
to ensure that segments arrive in order at the destination
to end communication when data transmission is complete
to inform a source to retransmit data from a specific point forward
to request that a source decrease the rate at which it transmits data
What is a function of the data link layer?
provides the formatting of data
provides end-to-end delivery of data between hosts
provides delivery of data between two applications
provides for the exchange of frames over a common local media
What method is used to manage contention-based access on a wireless network?
token passing
CSMA/CA
priority ordering
CSMA/CD
A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?
Enter CTRL-Z at the privileged mode prompt
Exit global configuration mode
Power cycle the device
Reboot the device
Exit privileged EXEC mode and press Enter
A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)
mobility options
packet collision
Interference
Security
coverage area
What are the three parts of an IPv6 global unicast address? (Choose three.)
subnet ID
subnet mask
broadcast address
global routing prefix
interface ID
