Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
72 Cards in this Set
- Front
- Back
Which 3 statements are true about the operation of a full-duplex Ethernet network |
- There are no collisions in full-duplex - A dedicated switchport is required for each full-duplex node - The host network card and the switch port must be capable of operating in full-duplex mode |
|
The application layer of the TCP/IP uses the ______ protocol? |
SMTP |
|
The transport layer of the TCP/IP uses the _____ protocol? |
TCP |
|
The internet layer of the TCP/IP uses the _____ protocol? |
IP |
|
The network access layer of the TCP/IP uses the _______ protocol? |
Ethernet |
|
Which OSI layer header contains the address of a destination host that is on another network? |
Network layer |
|
Which layer of the TCP/IP stack combines the OSI model physical and data link layers? |
Network access layer |
|
Which protocol uses a connection-oriented service to deliver files between end systems? |
FTP |
|
If the hubs were replaced by switches, what would be virtually eliminated? |
Ethernet collisions |
|
Which network device functions only at Layer 1 of the OSI model? |
hub |
|
Which transport layer protocol provides best-effort delivery service with no acknowledgmentreceipt required? |
UDP - provides a connectionless datagram service that offers best-effort delivery, which means thatUDP does not guarantee delivery or verify sequencing for any datagrams. |
|
Which layer of the OSI model controls the reliability of communications between network devicesusing flow control, sequencing and acknowledgments? |
Transport |
|
Which statements are true regarding ICMP packets? (Choose two.) |
- TRACERT uses ICMP packets. - They are encapsulated within IP datagrams. |
|
Which statements accurately describe CDP? (Choose three.) |
-CDP is a Cisco proprietary protocol. - CDP is a datalink layer protocol. - CDP can discover directly connected neighboring Cisco devices |
|
How does a switch differ from a hub? |
A switch tracks MAC addresses of directly-connected devices. |
|
What must occur before a workstation can exchange HTTP packets with a web server? |
A TCP connection must be established between the workstation and the web server |
|
How does TCP differ from UDP? (Choose two.) |
- TCP provides synchronized communication. - TCP provides sequence numbering of packets. |
|
A workstation has just resolved a browser URL to the IP address of a server. What protocol willthe workstation now use to determine the destination MAC address to be placed into framesdirected toward the server? |
ARP |
|
Host A is sending a packet to Host B for the first time. What destination MAC address will Host Ause in the ARP request? |
ff-ff-ff-ff-ff-ff |
|
What are two common TCP applications? (Choose two.) |
- SMTP - FTP |
|
Which two statements describe the operation of the CSMA/CD access method? (Choose two.) |
- In a CSMA/CD collision domain, stations must wait until the media is not in use beforetransmitting. - After a collision, all stations run a random backoff algorithm. When the backoff delay period hasexpired, all stations have equal priority to transmit data. |
|
On a Cisco switch, which protocol determines if an attached VoIP phone is from Cisco or fromanother vendor? |
CDP |
|
At which layer of the OSI model does the protocol that provides the information that is displayedby the show cdp neighbors command operate? |
data link |
|
Which two characteristics apply to Layer 2 switches? (Choose two.) |
- increases the number of collision domains - implements VLAN |
|
Which two characteristics describe the access layer of the hierarchical network design model?(Choose two.) |
- layer 3 support - port security |
|
Which two options will help to solve the problem of a network that is suffering a broadcast storm?(Choose two.) |
-a router - a Layer 3 switch |
|
A switch receives a frame on one of its ports. There is no entry in the MAC address table for thedestination MAC address. What will the switch do with the frame? |
forward it out of all ports except the one that received it |
|
Which address type does a switch use to make selective forwarding decisions? |
destination MAC address |
|
What does a host on an Ethernet network do when it is creating a frame and it does not have thedestination address? |
sends out an ARP request with the destination IP address |
|
A switch has 48 ports and 4 VLANs. How many collision and broadcast domains exist on theswitch (collision, broadcast)? |
48, 4 |
|
Which IP addresses are valid for hosts belonging to the 10.1.160.0/20 subnet? (Choose three.) |
- 10.1.168.0 -10.1.174.255 - 10.1.160.255 |
|
Given an IP address of 192.168.1.42 255.255.255.248, what is the subnet address? |
192.168.1.40/29 |
|
Which two statements describe the IP address 10.16.3.65/23? (Choose two.) |
- The lowest host address in the subnet is 10.16.2.1 255.255.254.0 - The broadcast address of the subnet is 10.16.3.255 255.255.254.0 |
|
Given a Class C IP address subnetted with a /30 subnet mask, how many valid host IP addressesare available on each of the subnets? |
2 - (/30 CIDR corresponds to mask 55.255.255.252 whose binary is 11111100 whichmeans 6 subnet bits and 2 host bits which means 62 subnets and 2 hosts per subnet) |
|
Which one of the following IP addresses is the last valid host in the subnet using mask255.255.255.224? |
192.168.2.62 |
|
What is the subnet address of 172.16.159.159/22? |
172.16.156.0 |
|
What is the subnet address for the IP address 172.19.20.23/28? |
172.19.20.16 |
|
An administrator is working with the 192.168.4.0 network, which has been subnetted with a /26mask. Which two addresses can be assigned to hosts within the same subnet? (Choose two.) |
- 192.168.4.67 - 192.168.4.125 |
|
What is the network address for the host with IP address 192.168.23.61/28? |
192.168.23.48 |
|
Which three items will adequately fulfill the request? (Choose three) |
- one IP subnet with a mask of 255.255.254.0 - seven 48-port switches - one router interface |
|
What is the purpose of assigning an IP address to a switch? |
allows remote management of the switch |
|
What two things does a router do when it forwards a packet? (Choose two.) |
- switches the packet to the appropriate outgoing interfaces - determines the next hop on the path |
|
What does administrative distance refer to? |
a measure of the trustworthiness of a routing information source |
|
Which IOS command is used to initiate a login into a VTY port on a remote router? |
router# telnet * VTY ports are telnet ports hence command B will initiate login to the telnet port |
|
The command ip route 192.168.100.160 255.255.255.224 192.168.10.2 was issued on a router.No routing protocols or other static routes are configured on the router. Which statement is trueabout this command? |
- Packets that are destined for host 192.168.100.160 will be sent to 192.168.10.2. *160 it's actually network address of /27 so any address within the range of 160network will be sent to 192.168.10.2 |
|
Which two of these functions do routers perform on packets? (Choose two.) |
- Update the Layer 2 headers of outbound packets with the MAC addresses of the next hops - Examine the Layer 3 headers of inbound packets and use that information to determine thenext hops for the packets |
|
Which two commands will display the current IP address and basic Layer 1 and 2 status of aninterface? (Choose two.) |
- router#show protocols - router#show controllers * Router#show protocols displays status of configured Layer 2 and 3 protocols whileshow controllers Displays statistics for interface hardware including the current IP address |
|
An administrator is in the process of changing the configuration of a router. What command willallow the administrator to check the changes that have been made prior to saving the newconfiguration? |
- Router# show running-config |
|
On a live network, which commands will verify the operational status of router interfaces? (Choosetwo.) |
- Router# show interfaces - Router# show ip interface brief |
|
Which router command will configure an interface with the IP address 10.10.80.1/19? |
- router(config-if)# ip address 10.10.80.1 255.255.224.0 |
|
What is the best practice when assigning IP addresses in a small office of six hosts? |
Assign the addresses statically on each node. |
|
Name the protocol: A PC sends packets to the default gateway IP address the first time since the PC is turned on |
ARP - Address Resolution Protocol |
|
Name the protocol: The network administrator is checking basic IP connectivity from a workstation to a server |
ICMP -
|
|
Name the protocol: The TCP/IP protocol stack must find an IP address for packets destined for a URL |
DNS - Domain Name |
|
Name the protocol: A network device will automatically assign IP addresses to workstations |
DHCP |
|
Name the protocol: A PC with address 10.1.5.10 must access devices on the Internet |
NAT - Network Address Translation |
|
Name the protocol: Only routers and servers require static IP addresses. Easy IP administration is required |
DHCP -
|
|
Name the protocol: A PC only knows a server as /MediaServer. IP needs to send data to that server. |
DNS |
|
Name the protocol: A protocol is needed to replace current static routes with automatic route updates |
OSPF |
|
Protocol definitions: A protocol used to monitor and manage network devices |
SNMP
|
|
Protocol definitions: A reliable, connection-oriented service that uses TCP to transfer files between systems |
FTP |
|
Protocol definitions: A connectionless service that uses UDP to transfer files between systems |
TFTP |
|
Protocol definitions: A protocol that converts human-readable names into machine readable addresses |
DNS |
|
Protocol definitions: Used to assign IP addresses automatically and set parameters such as subnet mask and default gateway |
DHCP
|
|
In the configuration of NAT, what does the keyword overload signify? |
Multiple internal hosts will use one IP address to access external network resources. |
|
What happens when computers on a private network attempt to connect to the Internet through aCisco router running PAT? |
The router uses the same IP address but a different TCP source port number for eachconnection. *Port Address Translation makes the PC connect to the Internet but using differentTCP source port |
|
When configuring NAT, the Internet interface is considered to be what? |
outside |
|
The ip helper-address command does what? |
relays a DHCP request across networks |
|
An administrator has connected devices to a switch and, for security reasons, wants thedynamically learned MAC addresses from the address table added to the running configuration.What must be done to accomplish this? |
Enable port security and use the keyword sticky |
|
A company has placed a networked PC in a lobby so guests can have access to the corporatedirectory. A security concern is that someone will disconnect the directory PC and re-connect theirlaptop computer and have access to the corporate network. For the port servicing the lobby, whichthree configuration steps should be performed on the switch to prevent this? (Choose three.) |
-Enable port security -Create the port as an access port - Statically assign the MAC address to the address table |
|
Why would a network administrator configure port security on a switch? |
to prevent unauthorized hosts from accessing the LAN |
|
How can you ensure that only the MAC address of a server is allowed by switch port Fa0/1? |
Configure the server MAC address as a static entry of port security |