1 - What can be found at the enterprise edge?
a. Internet, VPN, and WAN modules ****
b. Internet, PSTN, and WAN services
c. server farms and network management
d. campus infrastructure, including access layer devices
2 - In which functional area of the Cisco Enterprise Architecture should IDS and IPS be located to detect and prevent services from accessing hosts?
a. Enterprise Campus
b. Edge Distribution
c. Enterprise Edge ****
d. Service Provider Edge
3 - A business consultant must use Internet websites to research a report on the
e-business strategies of several firms and then electronically deliver the report to a group of clients in cities throughout the world. Which two teleworker tools can the consultant use to accomplish this project? (Choose two.)
a. VoIP
b. VPN
c. HTTP ****
d. Telnet
e. email ****
4 - Which two measures help ensure that a hardware problem does not cause an outage in an enterprise LAN that supports mission critical services? (Choose two.)
a. providing failover capability ****
b. installing redundant power supplies ****
c. purchasing more bandwidth from the ISP
d. implementing broadcast containment with VLANs
e. installing routers that can handle a greater amount of throughput
5 - Which task would typically only require services located at the access layer of the hierarchical design model?
a. connecting to the corporate web server to update sales figures
b. using a VPN from home to send data to the main office servers
c. printing a meeting agenda on a local departmental network printer ****
d. placing a VoIP call to a business associate in another country responding an e-mail from a co-worker in another department
6 - How does a VPN work to support remote user productivity?
a. It uses SSL to encrypt remote user logins to the corporate intranet.
b. It uses secure Telnet for remote user connections to internal network devices.
c. It creates a virtual circuit that allows real-time communications between any two Internet endpoints.
d. It uses encapsulation to create a secure tunnel for transmission of data across non-secure networks.****
7- A remote user needs to access a networking device on the internal network of the company. The transactions between the remote user and the device must be secure. Which protocol enables this to happen securely?
a. HTTP
b. SSH ****
c. Telnet
d. FTP
8 - What does VoIP provide to telecommuters?
a. high-quality, live-video presentations
b. real-time voice communications over the Internet ****
c. ability to share desktop applications simultaneously
d. secure, encrypted data transmissions through the Internet
9 - Which functional component of the Cisco Enterprise Architecture is responsible for hosting internal servers?
a. enterprise campus ****
b. enterprise edge
c. service provider edge
d. building distribution
10 - What is the purpose of the Cisco Enterprise Architecture?
a. remove the three-layer hierarchical model and use a flat network approach
b. divide the network into functional components while still maintaining the concept of Core, Distribution, and Access Layers ****
c. provide services and functionality to the core layer by grouping various components into a single
d. component located in the access layer reduce overall network traffic by grouping server farms, the management server, corporate intranet, and e-commerce routers in the same layer
11 - Which two solutions would an enterprise IT department use to facilitate secure intranet access for remote workers? (Choose two.)
a. VPN ****
b. NAT user authentication ****
c. client firewall software
d. packet sniffing
12 - Which statement describes the difference between an enterprise WAN and an enterprise extranet?
a. An enterprise WAN is designed to interconnect local LANs, while an enterprise extranet is designed to interconnect remote branch offices.
b. An enterprise WAN is designed to interconnect branch offices, while an enterprise extranet is designed to give access to external business partners.****
c. An enterprise WAN is designed to provide remote access for its teleworkers, while an enterprise extranet is designed to provide Internet connectivity for the enterprise.
d. An enterprise WAN is designed to provide Internet connectivity for the enterprise, while an enterprise extranet is designed to provide remote access to the enterprise network for teleworkers.
13 - Why would a network administrator want to limit the size of failure domains when designing a network?
a. reduces the effect of Ethernet collisions
b. reduces the impact of a key device or service failure ****
c. reduces the impact of Internet congestion on critical traffic
d. reduces the impact of blocking broadcast packets at the edge of the local network
14 - What is the main purpose of the Access Layer in a hierarchically designed network?
a. performs routing and packet manipulation
b. supplies redundancy and failover protection
c. provides a high-speed, low-latency backbone
d. serves as a network connection point for end-user devices ****
15 - Which three functions are performed at the Distribution Layer of the hierarchical network model? (Choose three.)
a. forwards traffic that is destined for other networks ****
b. isolates network problems to prevent them from affecting the Core Layer ****
c. allows end users to access the local network
d. provides a connection point for separate local networks ****
e. transports large amounts of data between different geographic sites
f. forwards traffic to other hosts on the same logical network
16 - What is a benefit of having an extranet?
a. It provides web-like access to company information for employees only.
b. It limits access to corporate information to secure VPN or remote access connections only.
c. It allows customers and partners to access company information by connecting to a public web server.
d. It allows suppliers and contractors to access confidential internal information using controlled external connections. ****
17 - What are two important characteristics or functions of devices at the Enterprise Edge? (Choose two.)
a. Providing Internet, telephone, and WAN services to the enterprise network
b. providing a connection point for end-user devices to the enterprise network
c. providing high-speed backbone connectivity with redundant connections
d. providing intrusion detection and intrusion prevention to protect the network against malicious activity ****
e. providing packet inspection to determine if incoming packets should be allowed on the enterprise network ****
18 - Why is TCP the preferred Layer 4 protocol for transmitting data files?
a. TCP is more reliable than UDP because it requires lost packets to be retransmitted. ****
b. TCP requires less processing by the source and destination hosts than UDP.
c. UDP introduces delays that degrade the quality of the data applications.
d. TCP ensures fast delivery because it does not require sequencing or acknowledgements.
19 - The ABC Corporation implements the network for its new headquarters using the Cisco Enterprise Architecture. The network administrator wants to filter the traffic from and to the outside world. Where should the administrator deploy a firewall device?
a. server farm
b. enterprise edge ****
c. enterprise campus
d. service provider edge
20- Which two statements are reasons why UDP is used for voice and video traffic instead of TCP?(Choose two.)
a. TCP requires all data packets to be delivered for the data to be usable.
b. The acknowledgment process of TCP introduces delays that break the streams of data. ****
c. UDP does not have mechanisms for retransmitting lost packets. ****
d. UDP tolerates delays and compensates for them.
e. TCP is a connectionless protocol that provides end-to-end reliability.
f. UDP is a connection-oriented protocol that provides end-to-end reliability.
Sunday, October 4, 2009
CCNA discovery 1 chapter 3
1- Which two items are included in a network logical map? (Choose two.)
naming scheme
IP addressing scheme
length of cable runs
physical location of networking devices
specific layout of interconnections between networking devices and hosts
2- What does the 100 mean when referencing the 100BASE-T Ethernet standard?
type of cable used
type of data transmission
speed of transmission
type of connector required
maximum length of cable allowed
3- Which two networking devices are used to connect hosts to the access layer? (Choose two.)
router
hub
switch
server
computer
4- Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario?
ARP
DHCP
DNS
WINS
5- An integrated router can normally perform the functions of which two other network devices? (Choose two.)
NIC
switch
e-mail server
application server
wireless access point
6- What is a reason for disabling simple file sharing?
It enables the user to map a remote resource with a local drive.
It enables the user to share all files with all users and groups.
It enables the user to share printers.
It enables the user to set more specific security access levels.
7- If the default gateway is configured incorrectly on the host, what is the impact on communications?
The host is unable to communicate on the local network.
The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
There is no impact on communications.
8- Which two statements concerning networking standards are true? (Choose two.)
adds complexity to networks
encourages vendors to create proprietary protocols
provides consistent interconnections across networks
ensures that communications work best in a single-vendor environment
simplifies new product development
9- Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true?
H1 sends a unicast message to H2, but the hub forwards it to all devices.
H1 sends a unicast message to H2, and the hub forwards it directly to H2.
H1 sends a broadcast message to H2, and the hub forwards it to all devices.
H1 sends a multicast message to H2, and the hub forwards it directly to H2.
10- Which address does an NIC use when deciding whether to accept a frame?
source IP address
source MAC address
destination IP address
destination MAC address
source Ethernet address
11- A switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform?
It drops the frame.
It sends out an ARP request looking for the MAC address.
It floods the frame out of all active ports, except the origination port.
It returns the frame to the sender.
12- If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it?
dynamic route
default route
destination route
default destination
13- What is the function of the FCS field in an Ethernet frame?
detects transmission errors
provides timing for transmission
contains the start of frame delimiter
indicates which protocol will receive the frame
14- Which type of address is used in an Ethernet frame header?
logical addresses only
IP addresses only
MAC addresses only
broadcast addresses only
15- What is the purpose of logical addresses in an IP network?
They identify a specific NIC on a host device.
They are used to determine which host device accepts the frame.
They provide vendor-specific information about the host.
They are used to determine the network that the host is located on.
They are used by switches to make forwarding decisions.
16- What device is typically used as the default gateway for a computer?
a server hosted by the ISP
the router interface closest to the computer
a server managed by a central IT department
the switch interface that connects to the computer
17- Which table does a router use to make decisions on where a data packet is to be sent?
ARP table
routing table
network table
forwarding table
18- Which device accepts a message on one port and always forwards the message to all other ports?
modem
switch
router
hub
19- What is a benefit of having a router within the distribution layer?
prevents collisions on a local network
keeps broadcasts contained within a local network
controls which hosts have access to the network
controls host-to-host traffic within a single local network
20- Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium?
flow control
encapsulation
encoding
multicasting
access method
21- Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
It sends the data packet as it was received.
It reassembles the frame with different MAC addresses than the original frame.
It reassembles the data packet with different IP addresses than the original data packet.
It reassembles both the packet and the frame with different destination IP and MAC addresses.
naming scheme
IP addressing scheme
length of cable runs
physical location of networking devices
specific layout of interconnections between networking devices and hosts
2- What does the 100 mean when referencing the 100BASE-T Ethernet standard?
type of cable used
type of data transmission
speed of transmission
type of connector required
maximum length of cable allowed
3- Which two networking devices are used to connect hosts to the access layer? (Choose two.)
router
hub
switch
server
computer
4- Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario?
ARP
DHCP
DNS
WINS
5- An integrated router can normally perform the functions of which two other network devices? (Choose two.)
NIC
switch
e-mail server
application server
wireless access point
6- What is a reason for disabling simple file sharing?
It enables the user to map a remote resource with a local drive.
It enables the user to share all files with all users and groups.
It enables the user to share printers.
It enables the user to set more specific security access levels.
7- If the default gateway is configured incorrectly on the host, what is the impact on communications?
The host is unable to communicate on the local network.
The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
There is no impact on communications.
8- Which two statements concerning networking standards are true? (Choose two.)
adds complexity to networks
encourages vendors to create proprietary protocols
provides consistent interconnections across networks
ensures that communications work best in a single-vendor environment
simplifies new product development
9- Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true?
H1 sends a unicast message to H2, but the hub forwards it to all devices.
H1 sends a unicast message to H2, and the hub forwards it directly to H2.
H1 sends a broadcast message to H2, and the hub forwards it to all devices.
H1 sends a multicast message to H2, and the hub forwards it directly to H2.
10- Which address does an NIC use when deciding whether to accept a frame?
source IP address
source MAC address
destination IP address
destination MAC address
source Ethernet address
11- A switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform?
It drops the frame.
It sends out an ARP request looking for the MAC address.
It floods the frame out of all active ports, except the origination port.
It returns the frame to the sender.
12- If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it?
dynamic route
default route
destination route
default destination
13- What is the function of the FCS field in an Ethernet frame?
detects transmission errors
provides timing for transmission
contains the start of frame delimiter
indicates which protocol will receive the frame
14- Which type of address is used in an Ethernet frame header?
logical addresses only
IP addresses only
MAC addresses only
broadcast addresses only
15- What is the purpose of logical addresses in an IP network?
They identify a specific NIC on a host device.
They are used to determine which host device accepts the frame.
They provide vendor-specific information about the host.
They are used to determine the network that the host is located on.
They are used by switches to make forwarding decisions.
16- What device is typically used as the default gateway for a computer?
a server hosted by the ISP
the router interface closest to the computer
a server managed by a central IT department
the switch interface that connects to the computer
17- Which table does a router use to make decisions on where a data packet is to be sent?
ARP table
routing table
network table
forwarding table
18- Which device accepts a message on one port and always forwards the message to all other ports?
modem
switch
router
hub
19- What is a benefit of having a router within the distribution layer?
prevents collisions on a local network
keeps broadcasts contained within a local network
controls which hosts have access to the network
controls host-to-host traffic within a single local network
20- Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium?
flow control
encapsulation
encoding
multicasting
access method
21- Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
It sends the data packet as it was received.
It reassembles the frame with different MAC addresses than the original frame.
It reassembles the data packet with different IP addresses than the original data packet.
It reassembles both the packet and the frame with different destination IP and MAC addresses.
Subscribe to:
Posts (Atom)