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Processing for Latent Prints in the Lab
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Make mcq quiz with 4 option in which one is correct -'10 Basis of Material Science • .....;;;";;;"~~;;,,;;,,,,;.;.,,;;,,,;,,;.;,.,------------ 6. Temporary materials: Some materials are meant to be placed in the oral cavity for a short period of time for different reasons. • Temporary crowns: While a permanent crown is prepared in the dental laboratory, the patient must wait for few days before it can be fabricated and cemented into place. Does patient experience any problems during this time period? If the tooth is vital (the pulp is alive), the patient is likely to experience pain and sensitivity while eating and drinking, also it looks unesthetic. What can be done to solve this problem? A temporary crown is placed before the patient leaves the clinic. It is constructed and luted in the same appointment in which the crown preparation is done. Temporary crowns are not very strong or esthetic but they serve adequately till the permanent crown is ready to be cemented. • Temporary restorations: Sometimes it is difficult to decide immediately the best line of treatment for a particular tooth. The exact condition of the pulp may not be obvious to the dentist from the patient's symptoms. A dentist removes all or part of the decay and then places a temporary restoration to have time to observe the behaviour of the pulp or to give the pilip time to heal before deciding the further treatment required. Classification based on Location of Fabrication 4,9 Materials can be classified based on the location of fabrication into: • Direct restorative materials. • Indirect restorative materials Direct restorative materials: They include those materials which are used to restore cavity preparations directly in the oral cavity (Box 1.5). Box 1.5: Examples of direct restorative materials Amalgam, composites, glass ionomer and other materials, which set by chemical reactions in the mouth. Indirect restorative materials: It includes those restorations which must be fabricated outside the mouth, indirectly on a cast/ model/ die, because their processing condition would harm oral tissues. Materials used in the construction of such prosthesis are called indirect restorative materials (Box 1.6). Box 1.6: Examples of indirect restorative materials Gold inlays, crowns of metal, ceramic and polymers, which are processed at elevated temperatures. Some indirect composite restorations can be processed under specific wavelength of light, e.g. Ceramage. Classification based on Longevity of Use 1. Permanent restorations: These restorations are not planned to be replaced for a particular time period. Though they are referred to as permanent, actually they are not, e.g. fillings, crowns, bridges and dentures do not last forever (Fig. 1.5). 2. Temporary restorations: These restorations are planned to be replaced in a short period of time, such as few days to weeks. For ~ Permanent C/) c c -.2 0 c- :;::; Cll co Interim ~ Q; 0 .8ll::1iJ C/) o~ Cll a:: c:=:J Temporary Time period Fig. 1.5: Diagram depicting the time period of use of a restoration. (Arrow in permanent restoration depicts that such restorations are not planned to be replaced for a long period of time.) Introducton to Dental Materials Dental materials Box 1.7: Characteristics of metals 1. High thermal and electrical conductivity 2. Ductility (pure metals are very soft and they can be bent without breaking) 3. Opacity (they do not transmit light) 4. Luster (they have a surface that strongly reflects light and appears bright and shiny) 5. They tend to dissolve to some extent in water or other aqueous solutions, producing cations. 6. All metals are white (actually gray) except for gold, which is yellow, and copper, which is reddish. 7. All metals are solid at room temperature except mercury, which is liquid at room temperature and is used with silver alloys as amalgam. 8. All metals have high melting temperatures because of high strength of the metallic bond that holds the atoms together. 3. Polymers 4. Composites Composites are mixtures of two or more of the first three classes in which the different components remain distinct from one another in the final structure. A common example is composite resin. Fig. 1.7a: Three-dimensional structure of iron (metal) Metals Metals are the oldest of the three classes of materials that have been used as dental materials. Metals are characterized by metallic bonds (Box 1.7) which will be discussed in the next chapter. Metals solidify with their atoms in a regular or crystalline arrangement (see Chapter 2), often in the form of a cube (Fig. 1.7a). example, temporary fillings done in a tooth during root canal treatment, which have to be replaced within 2-4 days during subsequent visits. They are used to protect the tooth and provide function till the final restoration is done. 3. Interim restoration: At times, dental treatment requires "long-term" definite temporary restorations or "interim" restorations. For examle, a 7-year-old child, met with trauma and fractured one of his central incisors. A large composite build- up may serve his immediate requirement until the root formation is completed and a permanent crown is placed. 5 Classification based on the Chemical Nature of the Material These are the atoms that make up a material and the way they are bonded together determine the properties of that materiaLS Weak bonds make for weak materials and vice versa (Table 1.4). Materials can be classified into different categories based on their primary atomic bonds (Fig. 1.6): 1. Metals 2. Ceramics Fig. 1.6: Classification of dental materials based on chemical nature 12 Basis of Material Science Box 1.9: Benefits of ceramics in dentistry 1. Many ceramic oxides are used as pigmenting agents. These oxides produce good range of colors. Due to this characteristic, we are able to match almost any tooth color with good esthetic results. 2. They are inert, i.e. not chemically reactive. This quality provides ceramics with good bio- compatibility. 3. Ceramic materials are translucent, like natural teeth. This translucency gives the ceramic crown a more natural appearance than any other dental material. Fig. 1.7b: Internal arrangement of tetrahedral structure of ceramic (silica) four large oxygen atoms surround smaller silicon atom Ceramics A ceramic is a compound formed by the union of a metallic and a non-metallic element (Box 1.8). Most of these materials are oxides, formed by the union of oxygen with metals such as silicon, aluminum, calcium and magnesium (Fig.1.7b). Ceramics may be simple or complex. Examples of simple ceramics are alumina and silica. Examples of complex ceramics are feldspar (potassium aluminum silicate) and kaolin (hydrated aluminum silicate). Ceramics may be crystalline or non- crystalline (i.e. amorphous). Porcelain is a specific type of ceramic used extensively in dentistry (Box 1.9). Box 1.8: Characteristics of ceramics 1. High melting points. 2. Brittleness, which means they cannot be bent or deformed (no sliding) to any extent without actually cracking and breaking. 3. They are poor conductor of heat and electricity. 4. They are chemically inert. 5. They have excellent esthetic result in terms of matching natural teeth. Fig. 1.8: Stucture of synthetic polymer Polymers They are the latest addition (early to mid- 1900s) to dental materials. Most of the polymers are nowadays synthesized by humans. Polymers are giant, long-chain organic molecules (Fig. 1.8). Polymers are characterized by covalent bonds within each molecule, giving them tremendous strength in a single direction. Try to break a nylon rope by pulling it! They are poor conductors of heat and electri- city. Most polymers have a structure containing thousands of carbon atoms linked together like beads on a string. Others, such as silicone polymers are formed with silicon-oxygen bonds. Introducton to Dental Materials Table 1.4: Characteristics of different materials 13 Characteristics Bond Properties Crystal structure Metals Metallic bonding High strength and hardness, high electrical and thermal conductivity BCC, FCC, or HCP unit cells Ceramics Ionic or covalent bonding, or both High hardness and stiffness, electrically insulating, refractory, and chemically inert Crystalline or amorphous Polymers Covalent bonding Low sensitivity, high electrical resistivity, and low thermal conductivity, strength and stiffness vary widely Amorphous and crystalline Composites Composites are combinations of any of the basic ceramic, metallic and polymeric materials (Box 1.10). Each material that makes up composites is called a phase. Their properties tend to be somewhere between those of their basic constituents and are used to enhance their performance, longevity and handling chracterstics. Box 1.10: Types of composites in dentistry 1. Ceramic - metallic composite: Tungsten carbide bur. 2. Metal - polymer composite: Die materials in dental laboratory. 3. Ceramic - polymer composite: Enamel, dentin, bone and restorative composites. A composite is a kind of "combination" of materials, which compliment each other. The properties lacking in one material are compensated by those of the other material. For example, restorative composite has two phases, namely resin and fillers. Teeth and bones are examples of natural composites. Enamel is a composite of hydroxyapatite (which is a ceramic material) and protein (which is a polymer). EVALUATION OF DENTAL MATERIALS Most manufacturers of dental materials maintain a quality assurance programme (As per international standard like ADA specifications) and materials are thoroughly tested before being released into the market for dental practitioner (Fig. 1.9). Laboratory Evaluations Most ADA/ ANSI specifications involve laboratory tests. The tests performed as per these specifications are useful but they all are performed in vitro, (carried out in the laboratory away from the clinical conditions) which have a lot of limitations in clinical practice.lO Clinical Notes 1. For example, most of the direct restorative materials are tested for their compressive strength but ultimately the material is subjected to a combination of compressive, tensile and shear stresses, which may decide the final success or failure of the material under masticatory load. 2. Similarly upper dentures mostly fracture along the midline because of bending. Hence a bending or transverse strength ~B-a-s-is-o-f-M-a-t-e-ria-I-S~c-ie-n-c-e-------------- ---------. test is far more meaningful for denture base materials than a compression test. Clinical Trials The majority of new materials are subjected to extensive clinical trials normally in co-operation with a dental college or hospital departments prior to their release. CONCLUSION As the number of available materials is going up, it is important that the dentist remains more aware about new products so that their judgement about the selection of material remains successful. Materials which have not been thoroughly evaluated should be avoided, specially with clinical dentistry falling under Consumer Protection Act (CPA). I Research and development I iI Manufacturer/analysis Ideal requirements for clinical use: Thermal, optical, mechanical, chemical, biological Available materials and their properties are evaluated Launch of new I product Choice and selection of material by the dentist Critical assessment based on clinical performance I I H feedback to IMultiple Choice Questions A6. You’ve hired a third-party to gather information about your company’s servers and data. The third-party will not have direct access to your internal network but can gather information from any other source. Which of the following would BEST describe this approach? ❍ A. Backdoor testing ❍ B. Passive footprinting ❍ C. OS fingerprinting ❍ D. Partially known environment A7. Which of these protocols use TLS to provide secure communication? (Select TWO) ❍ A. HTTPS ❍ B. SSH ❍ C. FTPS ❍ D. SNMPv2 ❍ E. DNSSEC ❍ F. SRTP A8. Which of these threat actors would be MOST likely to attack systems for direct financial gain? ❍ A. Organized crime ❍ B. Hacktivist ❍ C. Nation state ❍ D. Competitor A9. A security incident has occurred on a file server. Which of the following data sources should be gathered to address file storage volatility? (Select TWO) ❍ A. Partition data ❍ B. Kernel statistics ❍ C. ROM data ❍ D. Temporary file systems ❍ E. Process table Quick Answer: 33 The Details: 43 Quick Answer: 33 The Details: 44 Quick Answer: 33 The Details: 45 Quick Answer: 33 The Details: 46 6 Practice Exam A - Questions A10. An IPS at your company has found a sharp increase in traffic from all-in-one printers. After researching, your security team has found a vulnerability associated with these devices that allows the device to be remotely controlled by a third-party. Which category would BEST describe these devices? ❍ A. IoT ❍ B. RTOS ❍ C. MFD ❍ D. SoC A11. Which of the following standards provides information on privacy and managing PII? ❍ A. ISO 31000 ❍ B. ISO 27002 ❍ C. ISO 27701 ❍ D. ISO 27001 A12. Elizabeth, a security administrator, is concerned about the potential for data exfiltration using external storage drives. Which of the following would be the BEST way to prevent this method of data exfiltration? ❍ A. Create an operating system security policy to prevent the use of removable media ❍ B. Monitor removable media usage in host-based firewall logs ❍ C. Only allow applications that do not use removable media ❍ D. Define a removable media block rule in the UTM Quick Answer: 33 The Details: 47 Quick Answer: 33 The Details: 48 Quick Answer: 33 The Details: 49 Practice Exam A - Questions 7 A13. A CISO (Chief Information Security Officer) would like to decrease the response time when addressing security incidents. Unfortunately, the company does not have the budget to hire additional security engineers. Which of the following would assist the CISO with this requirement? ❍ A. ISO 27701 ❍ B. PKI ❍ C. IaaS ❍ D. SOAR A14. An insurance company has created a set of policies to handle data breaches. The security team has been given this set of requirements based on these policies: • Access records from all devices must be saved and archived • Any data access outside of normal working hours must be immediately reported • Data access must only occur inside of the country • Access logs and audit reports must be created from a single database Which of the following should be implemented by the security team to meet these requirements? (Select THREE) ❍ A. Restrict login access by IP address and GPS location ❍ B. Require government-issued identification during the onboarding process ❍ C. Add additional password complexity for accounts that access data ❍ D. Conduct monthly permission auditing ❍ E. Consolidate all logs on a SIEM ❍ F. Archive the encryption keys of all disabled accounts ❍ G. Enable time-of-day restrictions on the authentication server Quick Answer: 33 The Details: 50 Quick Answer: 33 The Details: 51 8 Practice Exam A - Questions A15. Rodney, a security engineer, is viewing this record from the firewall logs: UTC 04/05/2018 03:09:15809 AV Gateway Alert 136.127.92.171 80 -> 10.16.10.14 60818 Gateway Anti-Virus Alert: XPACK.A_7854 (Trojan) blocked. Which of the following can be observed from this log information? ❍ A. The victim's IP address is 136.127.92.171 ❍ B. A download was blocked from a web server ❍ C. A botnet DDoS attack was blocked ❍ D. The Trojan was blocked, but the file was not A16. A user connects to a third-party website and receives this message: Your connection is not private. NET::ERR_CERT_INVALID Which of the following attacks would be the MOST likely reason for this message? ❍ A. Brute force ❍ B. DoS ❍ C. On-path ❍ D. Disassociation A17. Which of the following would be the BEST way to provide a website login using existing credentials from a third-party site? ❍ A. Federation ❍ B. 802.1X ❍ C. PEAP ❍ D. EAP-FAST Quick Answer: 33 The Details: 53 Quick Answer: 33 The Details: 54 Quick Answer: 33 The Details: 55 Practice Exam A - Questions 9 A18. A system administrator, Daniel, is working on a contract that will specify a minimum required uptime for a set of Internet-facing firewalls. Daniel needs to know how often the firewall hardware is expected to fail between repairs. Which of the following would BEST describe this information? ❍ A. MTBF ❍ B. RTO ❍ C. MTTR ❍ D. MTTF A19. An attacker calls into a company’s help desk and pretends to be the director of the company’s manufacturing department. The attacker states that they have forgotten their password and they need to have the password reset quickly for an important meeting. What kind of attack would BEST describe this phone call? ❍ A. Social engineering ❍ B. Tailgating ❍ C. Watering hole ❍ D. On-path A20. A security administrator has been using EAP-FAST wireless authentication since the migration from WEP to WPA2. The company’s network team now needs to support additional authentication protocols inside of an encrypted tunnel. Which of the following would meet the network team’s requirements? ❍ A. EAP-TLS ❍ B. PEAP ❍ C. EAP-TTLS ❍ D. EAP-MSCHAPv2 Quick Answer: 33 The Details: 56 Quick Answer: 33 The Details: 57 Quick Answer: 33 The Details: 58 10 Practice Exam A - Questions A21. Which of the following would be commonly provided by a CASB? (Select TWO) ❍ A. List of all internal Windows devices that have not installed the latest security patches ❍ B. List of applications in use ❍ C. Centralized log storage facility ❍ D. List of network outages for the previous month ❍ E. Verification of encrypted data transfers ❍ F. VPN connectivity for remote users A22. The embedded OS in a company’s time clock appliance is configured to reset the file system and reboot when a file system error occurs. On one of the time clocks, this file system error occurs during the startup process and causes the system to constantly reboot. Which of the following BEST describes this issue? ❍ A. DLL injection ❍ B. Resource exhaustion ❍ C. Race condition ❍ D. Weak configuration A23. A recent audit has found that existing password policies do not include any restrictions on password attempts, and users are not required to periodically change their passwords. Which of the following would correct these policy issues? (Select TWO) ❍ A. Password complexity ❍ B. Password expiration ❍ C. Password history ❍ D. Password lockout ❍ E. Password recovery Quick Answer: 33 The Details: 59 Quick Answer: 33 The Details: 60 Quick Answer: 33 The Details: 61 Practice Exam A - Questions 11 A24. What kind of security control is associated with a login banner? ❍ A. Preventive ❍ B. Deterrent ❍ C. Corrective ❍ D. Detective ❍ E. Compensating ❍ F. Physical A25. A security team has been provided with a noncredentialed vulnerability scan report created by a thirdparty. Which of the following would they expect to see on this report? ❍ A. A summary of all files with invalid group assignments ❍ B. A list of all unpatched operating system files ❍ C. The version of web server software in use ❍ D. A list of local user accounts A26. A business manager is documenting a set of steps for processing orders if the primary Internet connection fails. Which of these would BEST describe these steps? ❍ A. Communication plan ❍ B. Continuity of operations ❍ C. Stakeholder management ❍ D. Tabletop exercise A27. A security administrator is concerned about data exfiltration resulting from the use of malicious phone charging stations. Which of the following would be the BEST way to protect against this threat? ❍ A. USB data blocker ❍ B. Personal firewall ❍ C. MFA ❍ D. FDE Quick Answer: 33 The Details: 62 Quick Answer: 33 The Details: 63 Quick Answer: 33 The Details: 64 Quick Answer: 33 The Details: 65 12 Practice Exam A - Questions A28. A company would like to protect the data stored on laptops used in the field. Which of the following would be the BEST choice for this requirement? ❍ A. MAC ❍ B. SED ❍ C. CASB ❍ D. SOAR A29. A file server has a full backup performed each Monday at 1 AM. Incremental backups are performed at 1 AM on Tuesday, Wednesday, Thursday, and Friday. The system administrator needs to perform a full recovery of the file server on Thursday afternoon. How many backup sets would be required to complete the recovery? ❍ A. 2 ❍ B. 3 ❍ C. 4 ❍ D. 1Expectations for ProcessingCommon On-Chip Peripherals: Serial Communication Interfaces: UART (Universal Asynchronous Receiver/Transmitter): Enables serial communication for data transmission and reception. SPI (Serial Peripheral Interface): Facilitates fast, synchronous serial communication with external devices. I2C (Inter-Integrated Circuit): Another common protocol for serial communication, often used for connecting sensors and other peripherals. Timers and Counters: General Purpose Timers: Used for generating precise time delays and measuring intervals. Real-Time Clock (RTC): Keeps track of time even when the DSP is in a low-power state. Watchdog Timer: Monitors the DSP's operation and resets it if it detects a fault. Interrupt Controllers: Interrupts: Allow peripherals to signal the DSP when an event occurs, enabling efficient and responsive system operation. Memory Management: DMA (Direct Memory Access): Enables data transfer between memory and peripherals without CPU intervention, improving efficiency. On-Chip Memory: Includes RAM, ROM, and flash memory for storing data and code. Audio/Video Interfaces: DAC (Digital-to-Analog Converter): Converts digital signals to analog signals for audio output. ADC (Analog-to-Digital Converter): Converts analog signals to digital signals for processing. I/O Ports: GPIO (General Purpose Input/Output): Provides flexible control over external devices. Ethernet MAC (Media Access Controller): Enables network connectivity. Other Peripherals: LCD Controller: For displaying information on LCD screens. USB Interface: For connecting to USB devices. CAN (Controller Area Network): For communication in automotive and industrial applications.
A router is a networking device that
forwards data packets between
computer networks. Routers perform
the traffic directing functions
between networks and on the global
Internet. Data sent through a
network, such as a web page or
email, is in the form of data packets.
a firewall is a network security
system that monitors and controls
incoming and outgoing network
traffic based on predetermined
security rules. A firewall typically
establishes a barrier between a
trusted network and an untrusted
network, such as the Internet.
A modem is a network device that
both modulates and demodulates
analog carrier signals (called sine
waves) for encoding and decoding
digital information for processing.
A hub is a physical layer networking
device which is used to connect
multiple devices in a network.
Administrative jobs involve performing administrative roles that support workers in the agriculture industry. b. Engineering jobs involve using high-level science and math to solve complex problems. Professionals, evaluate, design, test and install agricultural equipment and systems. c. Labor jobs require workers to perform manual tasks such as planting, harvesting, caring for animals and maintaining equipment Sales jobs are performed by professionals who are responsible for selling materials and products to customers. e. Science jobs are those of scientists who work in agriculture and specialize in crops, livestock or food production. Agricultural Jobs: a. Farm workers perform essential manual labor tasks under the supervision of farmers and ranchers. They harvest or inspect crops, assist in watering the plants, applying fertilizer and pesticides to control weeds and insects. b. Growers are responsible for taking care and raising crops that involves proper management of the growing plants and its environment to keep the crops/plants healthy. c. Grain Elevator operators assist in maintaining essential quality standards of grains by properly storing, shipping and purchasing grains. They receive incoming grain deliveries, store the grain safely and they may assist in preparing outgoing shipments, drying grain and blending different grain types. d. Agricultural equipment technicians maintain, install and repair machines and implements. They perform preventive maintenance, which may involve refueling machines, replacing batteries, changing the oil and lubricating moving parts. When they detect a malfunctioning equipment, they perform diagnostic tests and conduct necessary repairs. e. Purchasing agents are responsible for buying agricultural products and raw materials at wholesale for processing and reuse. These professionals often have to meet specific purchasing quotas for processors. They work with several farming clients, who serve as suppliers of grain, milk and other agricultural products. f. Farm warehouse managers are responsible for overseeing all activities related to storing, shipping and receiving agricultural materials. They send and receive shipments, including loading and unloading products and materials Agriculture specialists perform administrative support and clerical tasks that focus on a certain aspect of farming. Some agriculture specialists focus on storage, which requires them to work with farmers to develop high-performing crop and grain storage and inventory systems. h. Sales representatives sell materials and products to businesses and government agencies. They seek out prospective customers by attending trade shows, reviewing customer lists and following leads from existing clients. They determine customers' needs, explain how their products meet clients' needs and create packages that meet customers' budgetary and timeline needs. i. Crop managers oversee the many steps in the crop production process. They supervise seed sourcing, planting processes and scheduling as well as fertilizing, irrigation and harvesting. j. Environmental engineers use science and engineering principles to design and apply solutions to problems that occur on agricultural sites. They assess environmental conditions—including testing soil and analyzing drainage capabilities—and develop improvements. k. Feed mill managers supervise the production and storage of animal feed. They are responsible for monitoring inventory levels, scheduling feed production and inspecting the quality of the grain. These professionals set and maintain quality standards, assess and improve operating procedures and track customer complaints. l. Research scientists who specialize in agriculture often work as food scientists, who research and develop processes for manufacturing, storing and packaging food. They are responsible for developing or improving products, but some specialize in detecting contaminants or administering government regulationsWhich of the following roles is responsible for creating cloud components and the testing and validation of services? A. Cloud auditor B. Inter-cloud provider C. Cloud service broker D. Cloud service developer Question #2Topic 1 What is the best source for information about securing a physical asset's BIOS? A. Security policies B. Manual pages C. Vendor documentation D. Regulations Question #3Topic 1 Which of the following is not a component of contractual PII? A. Scope of processing B. Value of data C. Location of data D. Use of subcontractors Question #4Topic 1 Which of the following concepts refers to a cloud customer paying only for the resources and offerings they use within a cloud environment, and only for the duration that they are consuming them? A. Consumable service B. Measured service C. Billable service D. Metered service Question #5Topic 1 Which of the following roles involves testing, monitoring, and securing cloud services for an organization? A. Cloud service integrator B. Cloud service business manager C. Cloud service user D. Cloud service administrator Question #6Topic 1 What is the only data format permitted with the SOAP API? A. HTML B. SAML C. XSML D. XML Question #7Topic 1 Which data formats are most commonly used with the REST API? A. JSON and SAML B. XML and SAML C. XML and JSON D. SAML and HTML Question #8Topic 1 Which of the following threat types involves an application that does not validate authorization for portions of itself after the initial checks? A. Injection B. Missing function-level access control C. Cross-site request forgery D. Cross-site scripting Question #9Topic 1 Which of the following roles involves overseeing billing, purchasing, and requesting audit reports for an organization within a cloud environment? A. Cloud service user B. Cloud service business manager C. Cloud service administrator D. Cloud service integrator Question #10Topic 1 What is the biggest concern with hosting a key management system outside of the cloud environment? A. Confidentiality B. Portability C. Availability D. Integrity file Viewing page 1 out of 52 pages. Viewing questions 1-10 out of 512 questions Browse atleast 50% to increase passing rate cup ExamTopics CertificationsIntegumentary system: skin and its accessory structures such as hair, sebaceous glands, sweat glands and nails. Antigen presenting cells (APCs)- a heterogeneous group of immune cells that mediate the cellular immune response by processing and presenting antigens for recognition by certain lymphocytes such as T cells. Classical APCs include dendritic cells, macrophages, Langerhans cells (macrophages of the skin that can migrate to the lymph vessels) and B cells. Hemidesmosomes- multiprotein complexes that facilitate the stable adhesion of basal epithelial cells to the underlying basement membrane. Type I collagen- fibrils form fibers which can form bundles; resists tension (most abundant; in tendons, bones, dermis) Type VII collagen- collagen type essential in strengthening and stabilizing the skin.