CCNA V7 exam
What command can be used on a Windows PC to see the IP configuration of that computer?
ipconfig
Which scenario describes a function provided by the transport layer?
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.
The global configuration command ip default-gateway 172.16.100.1 is applied to a switch. What is the effect of this command?
The switch can be remotely managed from a host on another network.
Which wireless technology has low-power and low-data rate requirements making it popular in loT environments?
Zigbee
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose Two.)
accessing the media data encapsulation
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?
Exit privileged EXEC mode and press Enter.
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?
all IPv6 configured routers on the local link
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
netstat -r route print
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 and source MAC addresses have local significance and change every time a frame goes from one LAN to another.
Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)
Perform the capture on different network segments. Capture traffic during peak utilization times to get a good representation of the different traffic types.
What are the two most effective ways to defend against malware? (Choose two.)
Update the operating system and other application software. Install and update antivirus software.
What three requirements are defined by the protocols used in network communcations to allow message transmission across a network? (Choose three.)
message size delivery options message encoding
What is the purpose of the TCP sliding window?
to request that a source decrease the rate at which it transmits data
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?
tracert
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 value in the TTL field reaches zero
Match each description with an appropriate IP address. (Not all options are used.)
127.0.0.1 a loopback address 240.2.6.255 an experimental address 198.133.219.2 a public address 169.254.1.5 a link-local address
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26
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?
200
What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B:: 1/64?
2001:DA48:FC5:A4::/64
A network administrator is adding a new LAN to a branch office. The new LAN must support 61 connected devices. What is the smallest network mask that the network administrator can use for the new network?
255.255.255.192
What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
255.255.255.192
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
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 default gateway
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 provides higher data capacity but is more expensive than copper cabling Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires.
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: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33
What are two features of ARP? (Choose two.)
If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.
What is an advantage to using a protocol that is defined by an open standard?
It encourages competition and promotes choices.
Refer to the exhibit. Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?
Laver 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Laver 3 destination address = 172.16.20.200 Laver 3 source address = 172.16.10.200
Match the header field with the appropriate layer of the OSI model. (Not all options are used.)
Layer 2: 802.2 header, FCS (Frame Check Sequence), Destination MAC Address Layer 3: TTL, Source IP Address Layer 4: Acknowledgement Number, Destination Port Number
What attribute of a NIC would place it at the data link layer of the OSI model?
MAC address
Which two protocols operate at the top layer of the TCP/IP protocol suite? (Choose two.)
POP DNS
What service is provided by DNS?
Resolves domain names, such as cisco.com, into IP addresses.
A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a switch to manage it. Which access method should be chosen?
SSH
A client packet is received by a server. The packet has a destination port number of 69. What service is the client requesting?
TFTP
What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)
The ARP request is sent as a broadcast, and will flood the entire subnet 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.
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?
The IPv6 enabled router interfaces begin sending IMPv6 Router Advertisement messages.
Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6 The Source Address field name from IPv4 is kept in IPv6.
Switchl> config t * Invalid input detected at '^' marker. Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?
The administrator must first enter privileged EXEC mode before issuing the command.
A technician with a PC is using multiple applications while connected to the Internet. How is the PC able to keep track of the data flow between multiple application sessions and have each application receive the correct packet flows?
The data flow is being tracked based on the source port number that is used by each application.
Tracing route to 192.168.100.1 Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)
There are 4 hops between this device and the device at 192.168.100.1. There is connectivity between this device and the device at 192.168.100.1.
Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
adds Ethernet control information to network protocol data places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
Which three layers of the OSI model map to the application layer of the TCP/IP model? (Choose three.)
application presentation Session
What characteristic describes antivirus software?
applications that protect end devices from becoming infected with malicious software
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
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?
authorization
Which frame field is created by a source node and used by a destination node to ensure that a transmitted data signal has not been altered by interference, distortion, or signal loss?
frame check sequence field
What does the term "attenuation" mean in data communication?
loss of signal strength as distance increases.
What are two common causes of signal degradation when using UTP cabling? (Choose two.)
low-quality cable or connectors improper termination
What are two characteristics of IP? (Choose two.)
operates independently of the network media does not require a dedicated end-to-end connection
Match a statement to the related network model. (Not all options are used.)
peer-to-peer network: no dedicated server is required client and server roles are set on a per request basis pee-to-peer application: requires a specific user interface a background service is required
What are three commonly followed standards for constructing and installing cabling? (Choose three.)
pinouts connector types cable lengths
An employee of a large corporation remotely logs into the company using the appropriate username and password. The employee is attending an important video conference with a customer concerning a large sale. It is important for the video quality to be excellent during the meeting. The employee is unaware that after a successful login, the connection to the company ISP failed. The secondary connection, however, activated within seconds. The disruption was not noticed by the employee or other employees. What three network characteristics are described in this scenario? (Choose three.)
quality of service fault tolerance security
A disgruntled employee is using some free wireless networking tools to determine information about the enterprise wireless networks. This person is planning on using this information to hack the wireless network. What type of attack is this?
reconnaissance
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?
remove the Ethernet header and configure a new Layer 2 header before sending it out SO/0/0
During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
switch the packet to the directly connected interface
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 MAC address of the default gateway
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?
the network performance baseline
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?
worm
