Which action would a network security administrator take under the principle of
least privilege?
Provide users with access to only necessary resources.
Encrypt all data for transmission across unsecured networks.
Restrict all users except administrators to the lowest privilege level.
Require authentication for access to all resources including files and folders.
Restrict all users except administrators to the lowest privilege level.
Require authentication for access to all resources including files and folders.
3 A user at a high school sends a DNS request for the FQDN
http://www.cisco.com. The local DNS server at the school district office checks its
cache and finds no record. What will the local DNS server do next?
send a DNS query to a root DNS server
send a DNS query to a DNS server that manages the HOSTS file
send a DNS query to a DNS server that manages the .com top level domain
send a DNS query to a DNS server that manages the cisco.com top level domain
send a DNS query to a DNS server that manages the .com top level domain
send a DNS query to a DNS server that manages the cisco.com top level domain
4 What is a characteristic of the EIGRP routing protocol?
It has a hop count limitation that makes it suitable only for small, simple networks
that consist of fewer than 15 hops.
It does not include subnet mask information in routing updates.
that consist of fewer than 15 hops.
It does not include subnet mask information in routing updates.
It builds the topology table based on all of the advertisements from its neighbors.
It maintains a full database of distant routers and the methods by which they
interconnect.
5 What function would a server running the RADIUS protocol provide to a router
that is configured with AAA?
It saves accounting information about who accessed what resource and at what
time it was accessed.
It contains the database that network devices use to authenticate users trying to
gain access to the network.
It lists the commands that a particular user is authorized to execute on the network
device.
It contains the MIB that devices use to keep information about themselves and
network performance.
device.
It contains the MIB that devices use to keep information about themselves and
network performance.
An experienced network technician has decided to use a divide-and-conquer approach to troubleshooting a network problem. What is an advantage to this approach?
works well for simple problems
quickly resolves user-related issues
easiest to use in a multi-vendor environment
quickly resolves user-related issues
easiest to use in a multi-vendor environment
targets the problem layer more quickly than other methods do
8 After an unsuccessful ping to the local router, the technician decides to
investigate the router. The technician observes that the lights and fan on the router
are not operational. In which layer of the OSI model is the problem most likely
occurring?
investigate the router. The technician observes that the lights and fan on the router
are not operational. In which layer of the OSI model is the problem most likely
occurring?
transport
network
data link
network
data link
physical
After issuing the show interfaces command, a network administrator notices a
large number of CRC errors but few collisions. Which problem could cause this
result?
large number of CRC errors but few collisions. Which problem could cause this
result?
excessive noise
duplex mismatch
incorrect NIC driver
oversize network diameter
11 Which address does a switch use for implementing port security?
the source IP address
11 Which address does a switch use for implementing port security?
the source IP address
the source MAC address
the destination IP address
the destination MAC address
12 What is the function of the service password-encryption command in the Cisco
IOS?
encrypts passwords sent over serial interfaces
validates encrypted passwords by the use of an authentication server
encrypts passwords for transmission across insecure networks
prevents passwords in configuration files from being easily read
13 Which two statements are correct about the UDP protocol? (Choose two.)
It utilizes a flow control mechanism.
It uses windowing.
It does not provide acknowledgment of receipt of data.
It is a connectionless protocol.
It guarantees the sequential arrival of data packets.
Which three items are considered components of DNS? (Choose three.)
resolvers
hosts file
DHCP client
DNS servers
domain namespace
DNS name translator
Which characteristic describes a function of Data Transfer Process in FTP?
initiates the TCP connection
passes control information to the server
keeps the control system open until closed by the user
closes connection automatically when the file transfer is complete
17 Which AAA process requires users to prove their identity with a username and
password to gain access to a network?
accounting
authorization
authentication
acknowledgment
Which statement correctly describes the importance of an SLA?
It outlines the range of services received by the ISP.
Which statement correctly describes the importance of an SLA?
It outlines the range of services received by the ISP.
It outlines the process to resolve planned incidents.
It outlines the management, monitoring, and maintenance of a network.
It outlines the termination costs according to the budget cycle of the customer.
21 When troubleshooting a connectivity issue for the WAN connection between
the headquarters and a branch office of a customer, the ISP technician verifies the
router to ensure that the router configuration is not altered from the original
configuration by the network administrator of the customer. What equipment type
does the router represent?
the headquarters and a branch office of a customer, the ISP technician verifies the
router to ensure that the router configuration is not altered from the original
configuration by the network administrator of the customer. What equipment type
does the router represent?
CPE
POP
IXP
CSU/DSU
22 When a user issues the command ping –a 64.102.240.242 in a command prompt window, which database will a DNS server search for the matching record?
reverse lookup zones
forward lookup zones
domain name search zones
domain address search zones
domain name search zones
domain address search zones
23 What contributes to the fact that transmitting a file using TCP will take longer
than transmitting the same file using UDP?
UDP does not need to add a header to a data packet.
UDP utilizes a more efficient error checking mechanism than TCP.
The UDP authentication process is faster than the process that is used by TCP.
The TCP verification process adds more transmissions during the file transfer.
UDP utilizes a more efficient error checking mechanism than TCP.
The UDP authentication process is faster than the process that is used by TCP.
The TCP verification process adds more transmissions during the file transfer.
24 What happens when a segment is encapsulated into a packet?
Data is converted to bits for transmission.
The destination port number is specified.
A header with logical addresses is added.
A session with a destination is established.
Which layer of the OSI model handles common protocols and technologies
including Ethernet, WLAN, Wi-Fi, ATM, and PPP?
Layer 1
Layer 2 Layer 3 Layer 4 Layer 7
30 Which two protocols allow network devices to report their status and events to
a centralized network management device? (Choose two.)
Syslog
Telnet
HTTP
HTTPS
SNMP
Which two statements are correct about the ICMP packet that is used by the ping
command? (Choose two.)
It guarantees datagram delivery.
It verifies Layer 3 connectivity.
It acknowledges the receipt of TCP segments.
It determines where a packet is lost on the path from the source to the destination.
It measures the time that elapses between when the request packet is sent and the
response packet is received.
32 While troubleshooting a connectivity issue between two directly connected
routers, the network administrator checks the encapsulation settings on the serial
interfaces of both routers. Which layer of the OSI model is the administrator
troubleshooting?
routers, the network administrator checks the encapsulation settings on the serial
interfaces of both routers. Which layer of the OSI model is the administrator
troubleshooting?
application layer
network layer
data link layer
physical layer
33 Which cable type provides a foil shielding to protect from outside
electromagnetic interference?
STP
UTP
coaxial
fiber-optic
coaxial
fiber-optic
34 When should an ISP helpdesk technician start documentation during the
customer troubleshooting process?
when the issue is resolved
when the technician answers the initial call from the customer who reports a
problem
when it is necessary to create a work order so that the onsite technician can visit
the customer site
when the technician cannot resolve the issue and the case needs to be escalated to
the next level technician
the customer site
when the technician cannot resolve the issue and the case needs to be escalated to
the next level technician
Which protocol defines the types of messages that a client uses to request a web
page and the messages a server uses to respond to those requests?
FTP
TCP
HTTP
HTML
37 When does a router enter the setup mode?
when the Cisco IOS is missing in flash
when the configuration is missing in NVRAM
when the setup command is run from the user mode
when the boot system command is missing in the configuration
38 A small tire retailer requires a low-cost WAN connection to its headquarters in
order to manage its inventory and process customer sales in real time. Which
WAN connection type is best suited to its needs?
order to manage its inventory and process customer sales in real time. Which
WAN connection type is best suited to its needs?
SONET
T3
T1
T3
T1
DSL
leased line
A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP can only supply five public IP addresses for this network. What technology can the administrator use to accomplish this task?
classful subnetting
variable length subnet masks
classless interdomain routing
variable length subnet masks
classless interdomain routing
port-based Network Address Translation
43 Which WAN connection provides a dedicated circuit with fixed bandwidth
available at all times?
point-to-point
circuit-switched
packet-switched
cable
44 A network technician begins troubleshooting by checking the status of the light on the network interface card on the web server. Which troubleshooting method is the technician using?
top-down
bottom-up
divide-and-conquer
from hardware to software
45 If the start-up configuration is not found in NVRAM, where will the router
look for it next by default?
flash
ROM
RAM
ROM
RAM
TFTP server
0 comments:
Post a Comment