CBIS PRACTICE TEST FULLY SOLVED 2026
EXAM 300 ACTUAL QUESTIONS AND CORRECT
ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+ ASSURED PASS
SECTION 1: DEFINITIONS AND CLASSIFICATION (Questions 1-40)
Question 1
An Acquired Brain Injury (ABI) is best defined as:
A) An injury to the brain that occurs at birth
B) An injury to the brain that is hereditary
C) An injury to the brain that occurs after birth and is not hereditary, congenital,
degenerative, or induced by birth trauma
D) An injury that only results from external force
Answer: C
Rationale: An Acquired Brain Injury (ABI) is defined as an injury to the brain that
occurs after birth and is not hereditary, congenital, degenerative, or induced by
birth trauma. This definition encompasses both traumatic and non-traumatic
causes. ABI excludes injuries present at birth or caused by progressive
degenerative conditions. The key distinction is that the injury occurs post-natally
and is not related to the birthing process itself.
---
Question 2
A Traumatic Brain Injury (TBI) is specifically caused by:
A) Lack of oxygen to the brain
B) An external force
C) A tumor
D) A stroke
,Answer: B
Rationale: A Traumatic Brain Injury (TBI) is defined as an alteration in brain
function or other evidence of brain pathology caused by an external force. This
distinguishes TBI from other forms of acquired brain injury that may result from
internal causes such as stroke, tumor, or lack of oxygen. The external force can
include impact to the head, penetration of the skull, or rapid
acceleration/deceleration forces.
---
Question 3
An injury that occurs when the skull is broken and the brain is exposed is called:
A) Closed head injury
B) Open head injury
C) Diffuse axonal injury
D) Coup-contrecoup injury
Answer: B
Rationale: An open head injury occurs when the skull is broken and the brain is
exposed to the external environment. This type of injury typically results from
penetrating trauma such as a gunshot wound or a sharp object entering the skull.
Open head injuries carry additional risks of infection and often involve more
localized damage compared to closed head injuries. The term "open" refers to the
violation of the protective skull barrier.
---
Question 4
The Glasgow Coma Scale (GCS) score range for a Mild TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 0-5
Answer: A
Rationale: A Glasgow Coma Scale score of 13-15 indicates a mild traumatic brain
injury. Mild TBIs account for approximately 75% of all TBIs. In mild cases, the
,person may experience brief or no loss of consciousness (0-30 minutes), with
altered consciousness typically lasting less than 24 hours. Imaging is often normal,
and these injuries are frequently referred to as concussions.
---
Question 5
The Glasgow Coma Scale (GCS) score range for a Moderate TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 6-10
Answer: B
Rationale: A Glasgow Coma Scale score of 9-12 indicates a moderate traumatic
brain injury. In moderate TBI, loss of consciousness may last up to 24 hours.
Imaging may show abnormalities, and skull fractures and bleeding are common
findings. Patients with moderate TBI typically require hospitalization and may
experience more significant cognitive and functional impairments than those with
mild TBI.
---
Question 6
The Glasgow Coma Scale (GCS) score range for a Severe TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 0-4
Answer: C
Rationale: A Glasgow Coma Scale score of 3-8 indicates a severe traumatic brain
injury. This represents significant impairment of consciousness, with loss of
consciousness typically exceeding 24 hours. Severe TBI often requires intensive
medical intervention, prolonged rehabilitation, and is associated with substantial
long-term disability. Individuals with GCS scores in this range are typically in a
coma or vegetative state immediately following injury.
, ---
Question 7
The leading cause of TBI in children aged 0-14 years is:
A) Motor vehicle accidents
B) Falls
C) Assault
D) Sports injuries
Answer: B
Rationale: Falls are the leading cause of traumatic brain injury in children aged 0-
14, accounting for approximately 50% of TBIs in this age group. Young children
are particularly vulnerable to falls due to their developing motor skills, curiosity,
and lack of awareness of danger. Common fall scenarios include falls from
furniture, stairs, and playground equipment. Prevention strategies include
supervision, use of safety gates, and ensuring age-appropriate play environments.
---
Question 8
The leading cause of TBI in individuals aged 16-19 is:
A) Falls
B) Motor vehicle accidents
C) Assault
D) Firearms
Answer: B
Rationale: Motor vehicle accidents are the leading cause of TBI in adolescents and
young adults aged 16-19. This age group has the highest rate of motor vehicle-
related injuries due to factors including inexperience, risk-taking behaviors, and
distracted driving. Prevention efforts for this age group focus on graduated
licensing programs, seat belt use, and education about impaired and distracted
driving.
---
Question 9
What percentage of firearm-related TBIs result in death?
EXAM 300 ACTUAL QUESTIONS AND CORRECT
ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+ ASSURED PASS
SECTION 1: DEFINITIONS AND CLASSIFICATION (Questions 1-40)
Question 1
An Acquired Brain Injury (ABI) is best defined as:
A) An injury to the brain that occurs at birth
B) An injury to the brain that is hereditary
C) An injury to the brain that occurs after birth and is not hereditary, congenital,
degenerative, or induced by birth trauma
D) An injury that only results from external force
Answer: C
Rationale: An Acquired Brain Injury (ABI) is defined as an injury to the brain that
occurs after birth and is not hereditary, congenital, degenerative, or induced by
birth trauma. This definition encompasses both traumatic and non-traumatic
causes. ABI excludes injuries present at birth or caused by progressive
degenerative conditions. The key distinction is that the injury occurs post-natally
and is not related to the birthing process itself.
---
Question 2
A Traumatic Brain Injury (TBI) is specifically caused by:
A) Lack of oxygen to the brain
B) An external force
C) A tumor
D) A stroke
,Answer: B
Rationale: A Traumatic Brain Injury (TBI) is defined as an alteration in brain
function or other evidence of brain pathology caused by an external force. This
distinguishes TBI from other forms of acquired brain injury that may result from
internal causes such as stroke, tumor, or lack of oxygen. The external force can
include impact to the head, penetration of the skull, or rapid
acceleration/deceleration forces.
---
Question 3
An injury that occurs when the skull is broken and the brain is exposed is called:
A) Closed head injury
B) Open head injury
C) Diffuse axonal injury
D) Coup-contrecoup injury
Answer: B
Rationale: An open head injury occurs when the skull is broken and the brain is
exposed to the external environment. This type of injury typically results from
penetrating trauma such as a gunshot wound or a sharp object entering the skull.
Open head injuries carry additional risks of infection and often involve more
localized damage compared to closed head injuries. The term "open" refers to the
violation of the protective skull barrier.
---
Question 4
The Glasgow Coma Scale (GCS) score range for a Mild TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 0-5
Answer: A
Rationale: A Glasgow Coma Scale score of 13-15 indicates a mild traumatic brain
injury. Mild TBIs account for approximately 75% of all TBIs. In mild cases, the
,person may experience brief or no loss of consciousness (0-30 minutes), with
altered consciousness typically lasting less than 24 hours. Imaging is often normal,
and these injuries are frequently referred to as concussions.
---
Question 5
The Glasgow Coma Scale (GCS) score range for a Moderate TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 6-10
Answer: B
Rationale: A Glasgow Coma Scale score of 9-12 indicates a moderate traumatic
brain injury. In moderate TBI, loss of consciousness may last up to 24 hours.
Imaging may show abnormalities, and skull fractures and bleeding are common
findings. Patients with moderate TBI typically require hospitalization and may
experience more significant cognitive and functional impairments than those with
mild TBI.
---
Question 6
The Glasgow Coma Scale (GCS) score range for a Severe TBI is:
A) 13-15
B) 9-12
C) 3-8
D) 0-4
Answer: C
Rationale: A Glasgow Coma Scale score of 3-8 indicates a severe traumatic brain
injury. This represents significant impairment of consciousness, with loss of
consciousness typically exceeding 24 hours. Severe TBI often requires intensive
medical intervention, prolonged rehabilitation, and is associated with substantial
long-term disability. Individuals with GCS scores in this range are typically in a
coma or vegetative state immediately following injury.
, ---
Question 7
The leading cause of TBI in children aged 0-14 years is:
A) Motor vehicle accidents
B) Falls
C) Assault
D) Sports injuries
Answer: B
Rationale: Falls are the leading cause of traumatic brain injury in children aged 0-
14, accounting for approximately 50% of TBIs in this age group. Young children
are particularly vulnerable to falls due to their developing motor skills, curiosity,
and lack of awareness of danger. Common fall scenarios include falls from
furniture, stairs, and playground equipment. Prevention strategies include
supervision, use of safety gates, and ensuring age-appropriate play environments.
---
Question 8
The leading cause of TBI in individuals aged 16-19 is:
A) Falls
B) Motor vehicle accidents
C) Assault
D) Firearms
Answer: B
Rationale: Motor vehicle accidents are the leading cause of TBI in adolescents and
young adults aged 16-19. This age group has the highest rate of motor vehicle-
related injuries due to factors including inexperience, risk-taking behaviors, and
distracted driving. Prevention efforts for this age group focus on graduated
licensing programs, seat belt use, and education about impaired and distracted
driving.
---
Question 9
What percentage of firearm-related TBIs result in death?
