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【单选题】
对预防结核病有效的疫苗叫做
A.
HIB疫苗
B.
疫苗
C.
卡介苗
D.
HPV疫苗
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举一反三
【单选题】Which of the following is NOT true according to the conversation?
A.
There is no link between coffee and heart disease.
B.
Caffeine can cure headache.
C.
Tea has less caffeine than soda.
D.
Addicted people without caffeine will get headache.
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【单选题】在完成细菌总数测定时,选用以下哪个稀释梯度平板计数( )
A.
10 -5
B.
10 -6
C.
10 -7
D.
10 -8
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【单选题】工业和信息化部部长苗圩宣布，2019年将在全国实行手机用户（）
A.
“取消漫游”
B.
“降低费用”
C.
“提速降费”
D.
“携号转网”
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【单选题】Which of the following services can not offered by a link-layer protocol?
A.
congestion control
B.
Link Access
C.
Error control
D.
Framing
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【单选题】Which UNIX command creates a symbolic link named myfile in the current directory to the file /etc/hosts? ( )
A.
In —s/etc/hosts myfile
B.
In —s myfile/etc/hosts
C.
link —s/etc/hosts myfile
D.
link —s myfile/etc/hosts
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【单选题】Which of the following is INCORRECT according to the conversation?
A.
There is no link between coffee and heart disease.
B.
Caffeine can cure headache.
C.
Tea has less caffeine than soda.
D.
Addicted people without caffeine will get headache.
查看完整题目与答案
【多选题】Which two are characteristics of link-state routing protocols?（） (Choose two.)
A.
Routers choose a best path for a destination based on the SPF algorithm.
B.
All routers in a given area or level build a consistent database describing the network's topology.
C.
Routers choose the best path for a destination based on the interface on which they received the link stateadvertisement with the lowest cost.
D.
All routers in a given area or level forward link state advertisements between interfaces in the same area or level, adding their metric to the link state advertisement's cost information when they forward it.
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【单选题】Which statement is correct about an OSPF sham-link？（）
A.
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
B.
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
C.
A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
D.
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
E.
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
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【单选题】When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?
A.
By default, all VLANs are allowed on the trunk.
B.
No VLANs are allowed; you must configure each VLAN by hand .
C.
Only configured VLANs are allowed on the link.
D.
Only extended VLANs are allowed by default.
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【判断题】瞎子阿炳的原名叫 华彦钧 ,代表作品是 《二泉映月》 。
A.
正确
B.
错误
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相关题目：
【单选题】Which of the following is NOT true according to the conversation?
A.
There is no link between coffee and heart disease.
B.
Caffeine can cure headache.
C.
Tea has less caffeine than soda.
D.
Addicted people without caffeine will get headache.
查看完整题目与答案
【单选题】在完成细菌总数测定时,选用以下哪个稀释梯度平板计数( )
A.
10 -5
B.
10 -6
C.
10 -7
D.
10 -8
查看完整题目与答案
【单选题】工业和信息化部部长苗圩宣布，2019年将在全国实行手机用户（）
A.
“取消漫游”
B.
“降低费用”
C.
“提速降费”
D.
“携号转网”
查看完整题目与答案
【单选题】Which of the following services can not offered by a link-layer protocol?
A.
congestion control
B.
Link Access
C.
Error control
D.
Framing
查看完整题目与答案
【单选题】Which UNIX command creates a symbolic link named myfile in the current directory to the file /etc/hosts? ( )
A.
In —s/etc/hosts myfile
B.
In —s myfile/etc/hosts
C.
link —s/etc/hosts myfile
D.
link —s myfile/etc/hosts
查看完整题目与答案
【单选题】Which of the following is INCORRECT according to the conversation?
A.
There is no link between coffee and heart disease.
B.
Caffeine can cure headache.
C.
Tea has less caffeine than soda.
D.
Addicted people without caffeine will get headache.
查看完整题目与答案
【多选题】Which two are characteristics of link-state routing protocols?（） (Choose two.)
A.
Routers choose a best path for a destination based on the SPF algorithm.
B.
All routers in a given area or level build a consistent database describing the network's topology.
C.
Routers choose the best path for a destination based on the interface on which they received the link stateadvertisement with the lowest cost.
D.
All routers in a given area or level forward link state advertisements between interfaces in the same area or level, adding their metric to the link state advertisement's cost information when they forward it.
查看完整题目与答案
【单选题】Which statement is correct about an OSPF sham-link？（）
A.
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
B.
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
C.
A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
D.
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
E.
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
查看完整题目与答案
【单选题】When a new trunk link is configured on an IOS-based switch, which VLANs are allowed over the link?
A.
By default, all VLANs are allowed on the trunk.
B.
No VLANs are allowed; you must configure each VLAN by hand .
C.
Only configured VLANs are allowed on the link.
D.
Only extended VLANs are allowed by default.
查看完整题目与答案
【判断题】瞎子阿炳的原名叫 华彦钧 ,代表作品是 《二泉映月》 。
A.
正确
B.
错误
查看完整题目与答案