RCDD Test TDMMV14 2025/2026 Exam
Questions and Corresponding Answers
with Surety of 100% Pass Mark
Which of these cables is considered immune to electromagnetic
interference?
A) Optical Fiber
B) Balanced Twisted-Pair
C) Coaxial - 🧠 ANSWER ✔✔A) Optical Fiber
Reference: TDMM, 14th edition, page 2-37
Which of the following terms describes the transmission of signals in both
directions at the
same time?
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,A) Simplex
B) Half-duplex
C) Full duplex - 🧠 ANSWER ✔✔C) Full Duplex
TDMM, 14th edition, page 1-39
Which of the following terms refers to signal interference between cable
pairs?
A) Crosstalk
B) Impedance
C) Delay skew
D) Power Loss - 🧠 ANSWER ✔✔A) Crosstalk
TDMM, 14th edition, page 1-54
Series-6 and Series-11 coaxial cables have a characteristic impedance of
___ ohms.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
,A) 25
B) 75
C) 100
D) 150 - 🧠 ANSWER ✔✔B) 75
TDMM, 14th edition, page 6-24
Balanced twisted-pair cables have a nominal characteristic impedance of
________ ohms at
100 MHz.
A) 25
B) 75
C) 100
D) 150 - 🧠 ANSWER ✔✔C) 100
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, TDMM, 14th edition, page 1-57
Which of the following sets the standard for comparing the conductivity of
metallic
cabling?
A) Copper
B) Gold
C) Silver
D) Aluminum - 🧠 ANSWER ✔✔A) Copper
TDMM, 14th edition, page 1-3, Table 1.1
Which optical fiber interface features an SFF design and has a simplex
connector that can be converted to a duplex using a clip?
A) LC-style optical fiber connector
B) ST-style optical fiber plugs
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
4
Questions and Corresponding Answers
with Surety of 100% Pass Mark
Which of these cables is considered immune to electromagnetic
interference?
A) Optical Fiber
B) Balanced Twisted-Pair
C) Coaxial - 🧠 ANSWER ✔✔A) Optical Fiber
Reference: TDMM, 14th edition, page 2-37
Which of the following terms describes the transmission of signals in both
directions at the
same time?
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,A) Simplex
B) Half-duplex
C) Full duplex - 🧠 ANSWER ✔✔C) Full Duplex
TDMM, 14th edition, page 1-39
Which of the following terms refers to signal interference between cable
pairs?
A) Crosstalk
B) Impedance
C) Delay skew
D) Power Loss - 🧠 ANSWER ✔✔A) Crosstalk
TDMM, 14th edition, page 1-54
Series-6 and Series-11 coaxial cables have a characteristic impedance of
___ ohms.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
,A) 25
B) 75
C) 100
D) 150 - 🧠 ANSWER ✔✔B) 75
TDMM, 14th edition, page 6-24
Balanced twisted-pair cables have a nominal characteristic impedance of
________ ohms at
100 MHz.
A) 25
B) 75
C) 100
D) 150 - 🧠 ANSWER ✔✔C) 100
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, TDMM, 14th edition, page 1-57
Which of the following sets the standard for comparing the conductivity of
metallic
cabling?
A) Copper
B) Gold
C) Silver
D) Aluminum - 🧠 ANSWER ✔✔A) Copper
TDMM, 14th edition, page 1-3, Table 1.1
Which optical fiber interface features an SFF design and has a simplex
connector that can be converted to a duplex using a clip?
A) LC-style optical fiber connector
B) ST-style optical fiber plugs
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
4
