Worksheetscisco 26-52
Total questions: 26
Worksheet time: 15mins
26 What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
The host cannot communicate with other hosts in the local network.
A ping from the host to 127.0.0.1 would not be successful.
• The switch will not forward packets initiated by the host.
27 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?
spam
Virus
Worm
Phishing
28 A company has a file server that shares a folder named Public. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Which component is addressed in the AAA network service framework?
automation
authorization
accounting
authentication
29 What are two common causes of signal degradation when using UTP cabling? (Choose two.)
loss of light over long distances
low-quality cable or connectors
low-quality shielding in cable
improper termination
low-quality shielding in cable
30 Which scenario describes a function provided by the transport layer?
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.
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.
A student is playing a short web-based movie with sound. The movie and sound are encoded within the transport layer header.
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.
31 Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.)
POP
DNS
IP
TCP
Ethernet
32 An employee of a large corporation remotely logs into the company using the appropriate username and password. 3 answers
security
scalability
quality of service
fault tolerance
powerline networking
33 Refer to the exhibit. If PC1 is sending a packet to PC2 and routing has been configured between the two routers, what will R1 do with the Ethernet frame header attached by PC1?
open the header and use it to determine whether the data is to be sent out S0/0/0
open the header and replace the destination MAC address with a new one
nothing, because the router has a route to the destination network
remove the Ethernet header and configure a new Layer 2 header before sending it out S0/0/0
34 Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)
transport
application
network
session
presentation
36 What does the term “attenuation” mean in data communication?
strengthening of a signal by a networking device
leakage of signals from one cable pair to another
loss of signal strength as distance increases
time for a signal to reach its destination
37 Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)
Capture traffic during peak utilization times to get a good representation of the different traffic types.
Perform the capture on different network segments.
Only capture WAN traffic because traffic to the web is responsible for the largest amount of traffic on a network.
Only capture traffic in the areas of the network that receive most of the traffic such as the data center.
38 Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?
Layer 2 destination address = 00-00-0c-94-36-dd
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.10.200
Layer 2 destination address = 00-00-0c-94-36-ab
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.100.200
Layer 2 destination address = 00-00-0c-94-36-ab
Layer 2 source address = 00-00-0c-94-36-bb
Layer 3 destination address = 172.16.20.200
Layer 3 source address = 172.16.10.200
39 Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.32/27
192.168.1.32/28
192.168.1.64/26
40 What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)
A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table.
The ARP request is sent as a broadcast, and will flood the entire subnet.
Switches become overloaded because they concentrate all the traffic from the attached subnets.
All ARP request messages must be processed by all nodes on the local network.
41 Why would a Layer 2 switch need an IP address?
to enable the switch to be managed remotely
to enable the switch to receive frames from attached PCs
to enable the switch to send broadcast frames to attached PCs
to enable the switch to function as a default gateway
42How 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.
43 Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
The Destination Address field is new in IPv6.
The Source Address field name from IPv4 is kept in IPv6.
The Version field from IPv4 is not kept in IPv6.
The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6.
44 Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)
NAT will impact negatively on switch performance.
NAT causes routing tables to include more information.
NAT provides a solution to slow down the IPv4 address depletion.
NAT introduces problems for some applications that require end-to-end connectivity.
45 Match each item to the type of topology diagram on which it is typically identified. (Not all options are used.)
Ответы на картине
46 What service is provided by HTTP?
An application that allows real-time chatting among remote users.
Uses encryption to secure the exchange of text, graphic images, sound, and video on the web.
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
47 A client packet is received by a server. The packet has a destination port number of 67. What service is the client requesting?
Telnet
FTP
SSN
DHCP
48 What are the two most effective ways to defend against malware? (Choose two.)
Implement strong passwords.
Update the operating system and other application software.
Install and update antivirus software.
Implement RAID.
49 An administrator defined a local user account with a secret password on router R1 for use with SSH. Which three additional steps are required to configure R1 to accept only encrypted SSH connections? (Choose three.)
Configure the IP domain name on the router.
Enable inbound vty Telnet sessions.
Configure DNS on the router.
Generate the SSH keys.
Enable inbound vty SSH sessions.
50 A host is trying to send a packet to a device on a remote LAN segment, but there are currently no mappings in its ARP cache. How will the device obtain a destination MAC address?
It will send the frame and use its own MAC address as the destination.
It will send the frame with a broadcast MAC address.
It will send an ARP request for the MAC address of the default gateway.
51 Match the header field with the appropriate layer of the OSI model. (Not all options are used.)
Ответ на картинке
52 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?
fast-forward
cut-through
store-and-forward
fragment-free
