96 Questions
What does AAA through RADIUS use to authenticate users?
Server Secret Key
What could happen if there is a secret key mismatch in AAA through RADIUS?
Login problems could occur
Which key is shared between the RADIUS server and the client for authentication?
Server Secret Key
What type of key could lead to login problems if it has a mismatch in AAA through RADIUS?
Server Secret Key
What is an evil twin in the context of a wireless network attack?
A rogue wireless access point posing as a legitimate one
What is the main objective of an evil twin attack?
To gather personal or corporate information
What is the purpose of a MITM (Man-in-the-Middle) attack in the context of wireless networks?
To observe or manipulate traffic between two parties
How does an attacker typically interfere with legitimate networks in an on-path attack?
By creating fake networks that the attacker controls
What is the purpose of conducting a firmware flash on a router?
To improve communication with newer devices and remove software vulnerabilities
How is conducting a firmware flash on a router similar to updating a device driver?
Both processes enable better compatibility with new devices
What can flashing the firmware of a router help to remove from the device?
Known software vulnerabilities
What is the purpose of upgrading or patching a computer's operating system in relation to routers and firmware?
To prevent security vulnerabilities and ensure compatibility with routers
What can an attacker determine by analyzing packet captures using a program like Wireshark?
The software versions being sent in the packets and their associated metadata
What type of information is contained within packet captures?
Software versions and metadata
What is the main purpose of using Wireshark to analyze packet captures?
To determine the information and metadata contained within the packets
What type of cable connector is required for a DOCSIS modem?
F-type connector
What is the main purpose of a DOCSIS modem?
Connecting to cable networks
Which type of network does a DOCSIS modem typically connect to?
Cable network
What is the primary function of an analog modem?
Converting digital pulses to tones for transmission over analog telephone lines
Why is an analog modem necessary for connecting a computer to an analog telephone line?
To convert the computer's digital signals to tones that can be transmitted over the analog telephone line
What does an analog modem do in order to facilitate communication over an analog telephone line?
Converts the digital data into audible tones for transmission
What is the recommended process for deploying patches?
Test patches first before deploying to the development environment
How should an analog modem facilitate communication over an analog telephone line?
By converting digital signals from the computer into analog signals for transmission
What type of cable connector is typically required for a DOCSIS modem?
Coaxial cable connector
What does RPO, Recovery point objective, measure in a business continuity plan?
The interval of time before a disruption that exceeds the maximum allowable data loss
What does RTO, Recovery time objective, define in the context of a business continuity plan?
The duration of time within which a business process must be restored after a disaster
What does MTTR, Mean Time To Repair, measure in the context of network maintenance?
The average time it takes to repair a network device when it breaks
What is the primary function of DHCP servers on a LAN?
Allocating IP addresses to clients
What does the mean time between failures (MTBF) measure?
Average time between failures on a device
What does DHCP snooping on LAN switches help to exclude?
Rogue MAC addresses
What is the primary purpose of data wiping or clearing on a hard drive?
Destroy all electronic data on the hard drive
What does degaussing a hard drive involve?
Demagnetizing the hard drive to erase its stored data
What is the process of purging sensitive data from a hard drive?
Removing sensitive data from a hard drive using the device's internal electronics or an outside source
What is the purpose of conducting a firmware flash on a router?
To upgrade or patch the computer's operating system
What does degaussing a hard drive involve?
Purging sensitive data from the hard drive
What is the main purpose of a DOCSIS modem?
To connect multiple computers in a LAN to the Internet through a single connection
What is the primary function of the management plane in a network?
Monitoring traffic conditions and network status
How does Time-division multiplexing (TDM) technology work in a communication channel?
Physically takes turns on the channel to pass multiple signals or bitstreams
How does the function of a packet sniffer differ from that of an intrusion detection system (IDS)?
IDS wait to receive implicitly malicious data in a network before logging the event
What is the primary purpose of NAC (Network Access Control)?
To secure access to network nodes and control network access
How can a technician utilize LEDs on the switchports?
To quickly monitor activity and performance for the interfaces
What features does OSPF support from the options provided in this question?
IPv4 and VLSM
Which encryption scheme uses the RC4 cipher and a temporal integrity protocol TKIP?
WPA
What replaced the original version of WPA after the completion of the 802.11i security standard?
WPA2
Which cipher and message authentication protocol does WPA2 use for encryption?
AES and CCMP
What is the main function of a BGP (Border Gateway Protocol)?
Routing data between autonomous systems
What is the purpose of a MIB (Management Information Base) in networking?
Describing the structure of management data using OID
What does an OID (Object Identifier) do in the context of SNMP protocol?
Identifying a variable that can be read or set using SNMP protocol
What is the primary purpose of route poisoning in computer networks?
To prevent a router from sending packets through an invalid route
What is the function of a punchdown tool in networking?
To connect a network cable to a patch panel or wall jack
What is the purpose of a cable crimper in networking?
To join internal wires of a twisted pair cable with metallic pins
What is the primary function of MDF (Main Distribution Frame) in a telecommunications network?
Connecting equipment to cables and subscriber carrier equipment
What is the main purpose of IDF (Intermediate Distribution Frame) in a telecommunications network?
Serving as a distribution point for multipair cables from the MDF to individual cables connected to equipment in remote areas
What is the main purpose of a Krone block in a telecommunications network?
Providing insulation-displacement connectors for telecommunications networks used in Europe
What can a technician achieve by adding a multilayer switch to a patch antenna?
Improve network routing performance and reduce broadcast traffic
What does high network traffic indicate in the context of possible attacks?
A possible attack conducted either by an insider or someone out of the network to steal relevant information
What can be determined by reviewing the network baseline?
If the traffic is actually high and if any network configurations are out of baseline causing the issue
What is the primary function of a NetFlow analyzer in a network?
Monitoring and troubleshooting network performance
What is the purpose of utilizing raised floors in a network infrastructure?
To enable the placement of cables under the floor for accessibility
What is the role of a conduit in a network infrastructure?
Facilitating the passage of power or data cables
What is the primary purpose of using an IP scanner in a network?
To monitor network traffic and identify potential security threats
What is the role of performing a rollback in a network?
To revert back to the last known good configuration before unauthorized changes
What do captive portals typically use to implement their functionality?
HTTP redirect and DNS redirect
What is the primary function of DHCP reservations in a network?
To ensure that clients always receive the same IP address from the DHCP server
What is the role of a web application firewall (WAF) or application-aware firewall in network security?
Detecting suspicious activity related to random ports and TLS encryption
What is the purpose of dual control in a network security context?
Ensuring that both people act together for critical operations
What is the primary purpose of a stateful firewall?
To maintain a state or store information about active network connections
How does a stateless firewall differ from a stateful firewall?
It doesn't maintain an internal state from one packet to another
What does separation of duties aim to achieve?
To prevent fraud and errors by requiring more than one person to complete a task
What does it mean when a network device's interface details that the line protocol is down?
The Ethernet cable is disconnected from the switchport
What is the primary purpose of a tone generator in network cable identification?
To generate tones for copper cables location identification
What does the presence of flashing switch port lights indicate?
The switch is not performing the spanning tree process
Which technology provides an upgrade path for both GSM and CDMA2000 cellular networks?
LTE
What is the 3G standard used for GSM cellular networks?
HSPA+
What technology sends out packets to requested devices when streaming to multiple workstations from a single streaming media server?
Multicast
What is crosstalk in the context of networking?
An effect caused by the unintentional and undesired transmission of a signal from one cable to another
What is the purpose of AAAA records in networking?
To link hostname to IPv6 address
What technology is used to link hostname to IPv4 address in networking?
Domain Name System (DNS)
What is the primary purpose of SOA records in a domain or zone?
To store important information about a domain or zone
When would you use CNAME records in networking?
To point a domain to another domain name or subdomain
What is the main purpose of MX records in networking?
To direct emails to a mail server
What is the primary purpose of SRV records in DNS?
To specify a host and port for a specific service
What is the main function of PTR records in DNS?
To correlate an IP address with a domain name
What type of information do TXT records store in the DNS?
Machine-readable data
What is the function of a CSU/DSU (Channel Service Unit/Data Service Unit) in networking?
Converts digital data frames from LAN to WAN and vice versa
What is the indication of a duplicate MAC address occurring on a switch?
Continual changes in port assignments for that address
Which hardware device terminates a T1 connection at the customer's site?
CSU/DSU
What is the primary function of Multipoint GRE (mGRE) protocol?
Enabling one node to communicate with many nodes
What is the main purpose of Multiprotocol Label Switching (MLPS) in telecommunications networks?
Directing data based on short path labels
What does the equation Pages/second = memory signify in the context of networking?
Benchmark for network performance
What is the main function of a remote access server (RAS) or remote desktop gateway?
Providing a suite of services to connect users to a network or the internet remotely
What is the primary purpose of DNSSEC extension specifications for Internet Protocol networks?
Ensuring data integrity and authentication of DNS data
What is the main function of VirtualPBX in a telecommunications network?
Allowing extension phones in one office to connect to the telephone network in another office
What is the maximum speed of a DSL connection?
1 Gbps
Which state is not part of the 5 states of STP (Spanning Tree Protocol)?
Transmitting
What is the primary purpose of a T1 connection in telecommunications?
Providing high-speed internet
This quiz tests your knowledge about the use of a Server Secret Key (shared secret key) in AAA through RADIUS, and the possible login problems caused by a secret key mismatch.
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